Linux 2.6.20-rc7

Ok, so I said there wouldn't be another -rc.

I lied.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

CREDITS

@@ -3279,7 +3279,7 @@ S: Sevilla 41005
 S: Spain
 
 N: Linus Torvalds
-E: torvalds@osdl.org
+E: torvalds@linux-foundation.org
 D: Original kernel hacker
 S: 12725 SW Millikan Way, Suite 400
 S: Beaverton, Oregon 97005

Documentation/DocBook/libata.tmpl

@@ -883,7 +883,7 @@ and other resources, etc.
   </chapter>
 
   <chapter id="ataExceptions">
-     <title>ATA errors &amp; exceptions</title>
+     <title>ATA errors and exceptions</title>
 
   <para>
   This chapter tries to identify what error/exception conditions exist

Documentation/SubmitChecklist

@@ -72,3 +72,7 @@ kernel patches.
 
     If the new code is substantial, addition of subsystem-specific fault
     injection might be appropriate.
+
+22: Newly-added code has been compiled with `gcc -W'.  This will generate
+    lots of noise, but is good for finding bugs like "warning: comparison
+    between signed and unsigned".

Documentation/SubmittingPatches

@@ -134,9 +134,9 @@ Do not send more than 15 patches at once to the vger mailing lists!!!
 
 
 Linus Torvalds is the final arbiter of all changes accepted into the
-Linux kernel.  His e-mail address is <torvalds@osdl.org>.  He gets
-a lot of e-mail, so typically you should do your best to -avoid- sending
-him e-mail.
+Linux kernel.  His e-mail address is <torvalds@linux-foundation.org>. 
+He gets a lot of e-mail, so typically you should do your best to -avoid-
+sending him e-mail. 
 
 Patches which are bug fixes, are "obvious" changes, or similarly
 require little discussion should be sent or CC'd to Linus.  Patches

Documentation/cachetlb.txt

@@ -373,14 +373,15 @@ maps this page at its virtual address.
 	likely that you will need to flush the instruction cache
 	for copy_to_user_page().
 
-  void flush_anon_page(struct page *page, unsigned long vmaddr)
+  void flush_anon_page(struct vm_area_struct *vma, struct page *page,
+                       unsigned long vmaddr)
   	When the kernel needs to access the contents of an anonymous
 	page, it calls this function (currently only
 	get_user_pages()).  Note: flush_dcache_page() deliberately
 	doesn't work for an anonymous page.  The default
 	implementation is a nop (and should remain so for all coherent
 	architectures).  For incoherent architectures, it should flush
-	the cache of the page at vmaddr in the current user process.
+	the cache of the page at vmaddr.
 
   void flush_kernel_dcache_page(struct page *page)
 	When the kernel needs to modify a user page is has obtained

Documentation/feature-removal-schedule.txt

@@ -273,3 +273,55 @@ Why:	Speedstep-centrino driver with ACPI hooks and acpi-cpufreq driver are
 Who:	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
 
 ---------------------------
+
+What:	ACPI hotkey driver (CONFIG_ACPI_HOTKEY)
+When:	2.6.21
+Why:	hotkey.c was an attempt to consolidate multiple drivers that use
+	ACPI to implement hotkeys.  However, hotkeys are not documented
+	in the ACPI specification, so the drivers used undocumented
+	vendor-specific hooks and turned out to be more different than
+	the same.
+
+	Further, the keys and the features supplied by each platform
+	are different, so there will always be a need for
+	platform-specific drivers.
+
+	So the new plan is to delete hotkey.c and instead, work on the
+	platform specific drivers to try to make them look the same
+	to the user when they supply the same features.
+
+	hotkey.c has always depended on CONFIG_EXPERIMENTAL
+
+Who:	Len Brown <len.brown@intel.com>
+
+---------------------------
+
+What:	/sys/firmware/acpi/namespace
+When:	2.6.21
+Why:	The ACPI namespace is effectively the symbol list for
+	the BIOS.  The device names are completely arbitrary
+	and have no place being exposed to user-space.
+
+	For those interested in the BIOS ACPI namespace,
+	the BIOS can be extracted and disassembled with acpidump
+	and iasl as documented in the pmtools package here:
+	http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils
+
+Who:	Len Brown <len.brown@intel.com>
+
+---------------------------
+
+What:	/proc/acpi/button
+When:	August 2007
+Why:	/proc/acpi/button has been replaced by events to the input layer
+	since 2.6.20.
+Who:	Len Brown <len.brown@intel.com>
+
+---------------------------
+
+What:	JFFS (version 1)
+When:	2.6.21
+Why:	Unmaintained for years, superceded by JFFS2 for years.
+Who:	Jeff Garzik <jeff@garzik.org>
+
+---------------------------

Documentation/filesystems/9p.txt

@@ -73,8 +73,22 @@ OPTIONS
 RESOURCES
 =========
 
-The Linux version of the 9p server is now maintained under the npfs project
-on sourceforge (http://sourceforge.net/projects/npfs).
+Our current recommendation is to use Inferno (http://www.vitanuova.com/inferno)
+as the 9p server.  You can start a 9p server under Inferno by issuing the
+following command:
+   ; styxlisten -A tcp!*!564 export '#U*'
+
+The -A specifies an unauthenticated export.  The 564 is the port # (you may
+have to choose a higher port number if running as a normal user).  The '#U*'
+specifies exporting the root of the Linux name space.  You may specify a
+subset of the namespace by extending the path: '#U*'/tmp would just export
+/tmp.  For more information, see the Inferno manual pages covering styxlisten
+and export.
+
+A Linux version of the 9p server is now maintained under the npfs project
+on sourceforge (http://sourceforge.net/projects/npfs).  There is also a
+more stable single-threaded version of the server (named spfs) available from
+the same CVS repository.
 
 There are user and developer mailing lists available through the v9fs project
 on sourceforge (http://sourceforge.net/projects/v9fs).
@@ -96,5 +110,5 @@ STATUS
 
 The 2.6 kernel support is working on PPC and x86.
 
-PLEASE USE THE SOURCEFORGE BUG-TRACKER TO REPORT PROBLEMS.
+PLEASE USE THE KERNEL BUGZILLA TO REPORT PROBLEMS. (http://bugzilla.kernel.org)
 

Documentation/filesystems/Locking

@@ -171,6 +171,7 @@ prototypes:
 	int (*releasepage) (struct page *, int);
 	int (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
 			loff_t offset, unsigned long nr_segs);
+	int (*launder_page) (struct page *);
 
 locking rules:
 	All except set_page_dirty may block
@@ -188,6 +189,7 @@ bmap:			yes
 invalidatepage:		no	yes
 releasepage:		no	yes
 direct_IO:		no
+launder_page:		no	yes
 
 	->prepare_write(), ->commit_write(), ->sync_page() and ->readpage()
 may be called from the request handler (/dev/loop).
@@ -281,6 +283,12 @@ buffers from the page in preparation for freeing it.  It returns zero to
 indicate that the buffers are (or may be) freeable.  If ->releasepage is zero,
 the kernel assumes that the fs has no private interest in the buffers.
 
+	->launder_page() may be called prior to releasing a page if
+it is still found to be dirty. It returns zero if the page was successfully
+cleaned, or an error value if not. Note that in order to prevent the page
+getting mapped back in and redirtied, it needs to be kept locked
+across the entire operation.
+
 	Note: currently almost all instances of address_space methods are
 using BKL for internal serialization and that's one of the worst sources
 of contention. Normally they are calling library functions (in fs/buffer.c)

Documentation/filesystems/ntfs.txt

@@ -457,6 +457,8 @@ ChangeLog
 
 Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
 
+2.1.28:
+	- Fix a deadlock.
 2.1.27:
 	- Implement page migration support so the kernel can move memory used
 	  by NTFS files and directories around for management purposes.

Documentation/hwmon/w83793

@@ -45,18 +45,14 @@ This driver implements support for Winbond W83793G/W83793R chips.
   temp5-6 have a 1 degree Celsiis resolution.
 
 * Temperature sensor types
-  Temp1-4 have 3 possible types. It can be read from (and written to)
+  Temp1-4 have 2 possible types. It can be read from (and written to)
   temp[1-4]_type.
-  - If the value of 0, the related temperature channel stops
-    monitoring.
   - If the value is 3, it starts monitoring using a remote termal diode
     (default).
-  - If the value is 5, it starts monitoring using the temperature sensor
-    in AMD CPU and get result by AMDSI.
   - If the value is 6, it starts monitoring using the temperature sensor
     in Intel CPU and get result by PECI.
   Temp5-6 can be connected to external thermistors (value of
-  temp[5-6]_type is 4). They can also be disabled (value is 0).
+  temp[5-6]_type is 4).
 
 * Alarm mechanism
   For voltage sensors, an alarm triggers if the measured value is below

Documentation/i386/boot.txt

@@ -2,7 +2,7 @@
 		     ----------------------------
 
 		    H. Peter Anvin <hpa@zytor.com>
-			Last update 2006-11-17
+			Last update 2007-01-26
 
 On the i386 platform, the Linux kernel uses a rather complicated boot
 convention.  This has evolved partially due to historical aspects, as
@@ -186,6 +186,7 @@ filled out, however:
 	7  GRuB
 	8  U-BOOT
 	9  Xen
+	A  Gujin
 
 	Please contact <hpa@zytor.com> if you need a bootloader ID
 	value assigned.

Documentation/kdump/kdump.txt

@@ -17,7 +17,7 @@ You can use common Linux commands, such as cp and scp, to copy the
 memory image to a dump file on the local disk, or across the network to
 a remote system.
 
-Kdump and kexec are currently supported on the x86, x86_64, and ppc64
+Kdump and kexec are currently supported on the x86, x86_64, ppc64 and ia64
 architectures.
 
 When the system kernel boots, it reserves a small section of memory for
@@ -54,59 +54,69 @@ memory," in two ways:
 Setup and Installation
 ======================
 
-Install kexec-tools and the Kdump patch
----------------------------------------
+Install kexec-tools
+-------------------
 
 1) Login as the root user.
 
 2) Download the kexec-tools user-space package from the following URL:
 
-   http://www.xmission.com/~ebiederm/files/kexec/kexec-tools-1.101.tar.gz
+http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/kexec-tools-testing.tar.gz
+
+This is a symlink to the latest version, which at the time of writing is
+20061214, the only release of kexec-tools-testing so far. As other versions
+are made released, the older onese will remain available at
+http://www.kernel.org/pub/linux/kernel/people/horms/kexec-tools/
+
+Note: Latest kexec-tools-testing git tree is available at
+
+git://git.kernel.org/pub/scm/linux/kernel/git/horms/kexec-tools-testing.git
+or
+http://www.kernel.org/git/?p=linux/kernel/git/horms/kexec-tools-testing.git;a=summary
 
 3) Unpack the tarball with the tar command, as follows:
 
-   tar xvpzf kexec-tools-1.101.tar.gz
+   tar xvpzf kexec-tools-testing.tar.gz
 
-4) Download the latest consolidated Kdump patch from the following URL:
+4) Change to the kexec-tools directory, as follows:
 
-   http://lse.sourceforge.net/kdump/
+   cd kexec-tools-testing-VERSION
 
-   (This location is being used until all the user-space Kdump patches
-   are integrated with the kexec-tools package.)
-
-5) Change to the kexec-tools-1.101 directory, as follows:
-
-   cd kexec-tools-1.101
-
-6) Apply the consolidated patch to the kexec-tools-1.101 source tree
-   with the patch command, as follows. (Modify the path to the downloaded
-   patch as necessary.)
-
-   patch -p1 < /path-to-kdump-patch/kexec-tools-1.101-kdump.patch
-
-7) Configure the package, as follows:
+5) Configure the package, as follows:
 
    ./configure
 
-8) Compile the package, as follows:
+6) Compile the package, as follows:
 
    make
 
-9) Install the package, as follows:
+7) Install the package, as follows:
 
    make install
 
 
-Download and build the system and dump-capture kernels
-------------------------------------------------------
+Build the system and dump-capture kernels
+-----------------------------------------
+There are two possible methods of using Kdump.
 
-Download the mainline (vanilla) kernel source code (2.6.13-rc1 or newer)
-from http://www.kernel.org. Two kernels must be built: a system kernel
-and a dump-capture kernel. Use the following steps to configure these
-kernels with the necessary kexec and Kdump features:
+1) Build a separate custom dump-capture kernel for capturing the
+   kernel core dump.
 
-System kernel
--------------
+2) Or use the system kernel binary itself as dump-capture kernel and there is
+   no need to build a separate dump-capture kernel. This is possible
+   only with the architecutres which support a relocatable kernel. As
+   of today i386 and ia64 architectures support relocatable kernel.
+
+Building a relocatable kernel is advantageous from the point of view that
+one does not have to build a second kernel for capturing the dump. But
+at the same time one might want to build a custom dump capture kernel
+suitable to his needs.
+
+Following are the configuration setting required for system and
+dump-capture kernels for enabling kdump support.
+
+System kernel config options
+----------------------------
 
 1) Enable "kexec system call" in "Processor type and features."
 
@@ -132,89 +142,183 @@ System kernel
    analysis tools require a vmlinux with debug symbols in order to read
    and analyze a dump file.
 
-4) Make and install the kernel and its modules. Update the boot loader
-   (such as grub, yaboot, or lilo) configuration files as necessary.
+Dump-capture kernel config options (Arch Independent)
+-----------------------------------------------------
 
-5) Boot the system kernel with the boot parameter "crashkernel=Y@X",
-   where Y specifies how much memory to reserve for the dump-capture kernel
-   and X specifies the beginning of this reserved memory. For example,
-   "crashkernel=64M@16M" tells the system kernel to reserve 64 MB of memory
-   starting at physical address 0x01000000 for the dump-capture kernel.
+1) Enable "kernel crash dumps" support under "Processor type and
+   features":
 
-   On x86 and x86_64, use "crashkernel=64M@16M".
+   CONFIG_CRASH_DUMP=y
 
-   On ppc64, use "crashkernel=128M@32M".
+2) Enable "/proc/vmcore support" under "Filesystems" -> "Pseudo filesystems".
 
+   CONFIG_PROC_VMCORE=y
+   (CONFIG_PROC_VMCORE is set by default when CONFIG_CRASH_DUMP is selected.)
 
-The dump-capture kernel
------------------------
-
-1) Under "General setup," append "-kdump" to the current string in
-   "Local version."
-
-2) On x86, enable high memory support under "Processor type and
+Dump-capture kernel config options (Arch Dependent, i386)
+--------------------------------------------------------
+1) On x86, enable high memory support under "Processor type and
    features":
 
    CONFIG_HIGHMEM64G=y
    or
    CONFIG_HIGHMEM4G
 
-3) On x86 and x86_64, disable symmetric multi-processing support
+2) On x86 and x86_64, disable symmetric multi-processing support
    under "Processor type and features":
 
    CONFIG_SMP=n
+
    (If CONFIG_SMP=y, then specify maxcpus=1 on the kernel command line
    when loading the dump-capture kernel, see section "Load the Dump-capture
    Kernel".)
 
-4) On ppc64, disable NUMA support and enable EMBEDDED support:
+3) If one wants to build and use a relocatable kernel,
+   Enable "Build a relocatable kernel" support under "Processor type and
+   features"
 
-   CONFIG_NUMA=n
-   CONFIG_EMBEDDED=y
-   CONFIG_EEH=N for the dump-capture kernel
+   CONFIG_RELOCATABLE=y
 
-5) Enable "kernel crash dumps" support under "Processor type and
-   features":
+4) Use a suitable value for "Physical address where the kernel is
+   loaded" (under "Processor type and features"). This only appears when
+   "kernel crash dumps" is enabled. A suitable value depends upon
+   whether kernel is relocatable or not.
 
-   CONFIG_CRASH_DUMP=y
+   If you are using a relocatable kernel use CONFIG_PHYSICAL_START=0x100000
+   This will compile the kernel for physical address 1MB, but given the fact
+   kernel is relocatable, it can be run from any physical address hence
+   kexec boot loader will load it in memory region reserved for dump-capture
+   kernel.
 
-6) Use a suitable value for "Physical address where the kernel is
+   Otherwise it should be the start of memory region reserved for
+   second kernel using boot parameter "crashkernel=Y@X". Here X is
+   start of memory region reserved for dump-capture kernel.
+   Generally X is 16MB (0x1000000). So you can set
+   CONFIG_PHYSICAL_START=0x1000000
+
+5) Make and install the kernel and its modules. DO NOT add this kernel
+   to the boot loader configuration files.
+
+Dump-capture kernel config options (Arch Dependent, x86_64)
+----------------------------------------------------------
+1) On x86 and x86_64, disable symmetric multi-processing support
+   under "Processor type and features":
+
+   CONFIG_SMP=n
+
+   (If CONFIG_SMP=y, then specify maxcpus=1 on the kernel command line
+   when loading the dump-capture kernel, see section "Load the Dump-capture
+   Kernel".)
+
+2) Use a suitable value for "Physical address where the kernel is
    loaded" (under "Processor type and features"). This only appears when
    "kernel crash dumps" is enabled. By default this value is 0x1000000
    (16MB). It should be the same as X in the "crashkernel=Y@X" boot
-   parameter discussed above.
+   parameter.
 
-   On x86 and x86_64, use "CONFIG_PHYSICAL_START=0x1000000".
+   For x86_64, normally "CONFIG_PHYSICAL_START=0x1000000".
 
-   On ppc64 the value is automatically set at 32MB when
-   CONFIG_CRASH_DUMP is set.
-
-6) Optionally enable "/proc/vmcore support" under "Filesystems" ->
-   "Pseudo filesystems".
-
-   CONFIG_PROC_VMCORE=y
-   (CONFIG_PROC_VMCORE is set by default when CONFIG_CRASH_DUMP is selected.)
-
-7) Make and install the kernel and its modules. DO NOT add this kernel
+3) Make and install the kernel and its modules. DO NOT add this kernel
    to the boot loader configuration files.
 
+Dump-capture kernel config options (Arch Dependent, ppc64)
+----------------------------------------------------------
+
+-  Make and install the kernel and its modules. DO NOT add this kernel
+   to the boot loader configuration files.
+
+Dump-capture kernel config options (Arch Dependent, ia64)
+----------------------------------------------------------
+
+- No specific options are required to create a dump-capture kernel
+  for ia64, other than those specified in the arch idependent section
+  above. This means that it is possible to use the system kernel
+  as a dump-capture kernel if desired.
+
+  The crashkernel region can be automatically placed by the system
+  kernel at run time. This is done by specifying the base address as 0,
+  or omitting it all together.
+
+  crashkernel=256M@0
+  or
+  crashkernel=256M
+
+  If the start address is specified, note that the start address of the
+  kernel will be aligned to 64Mb, so if the start address is not then
+  any space below the alignment point will be wasted.
+
+
+Boot into System Kernel
+=======================
+
+1) Make and install the kernel and its modules. Update the boot loader
+   (such as grub, yaboot, or lilo) configuration files as necessary.
+
+2) Boot the system kernel with the boot parameter "crashkernel=Y@X",
+   where Y specifies how much memory to reserve for the dump-capture kernel
+   and X specifies the beginning of this reserved memory. For example,
+   "crashkernel=64M@16M" tells the system kernel to reserve 64 MB of memory
+   starting at physical address 0x01000000 (16MB) for the dump-capture kernel.
+
+   On x86 and x86_64, use "crashkernel=64M@16M".
+
+   On ppc64, use "crashkernel=128M@32M".
+
+   On ia64, 256M@256M is a generous value that typically works.
+   The region may be automatically placed on ia64, see the
+   dump-capture kernel config option notes above.
 
 Load the Dump-capture Kernel
 ============================
 
-After booting to the system kernel, load the dump-capture kernel using
-the following command:
+After booting to the system kernel, dump-capture kernel needs to be
+loaded.
 
-   kexec -p <dump-capture-kernel> \
+Based on the architecture and type of image (relocatable or not), one
+can choose to load the uncompressed vmlinux or compressed bzImage/vmlinuz
+of dump-capture kernel. Following is the summary.
+
+For i386:
+	- Use vmlinux if kernel is not relocatable.
+	- Use bzImage/vmlinuz if kernel is relocatable.
+For x86_64:
+	- Use vmlinux
+For ppc64:
+	- Use vmlinux
+For ia64:
+	- Use vmlinux or vmlinuz.gz
+
+
+If you are using a uncompressed vmlinux image then use following command
+to load dump-capture kernel.
+
+   kexec -p <dump-capture-kernel-vmlinux-image> \
    --initrd=<initrd-for-dump-capture-kernel> --args-linux \
-   --append="root=<root-dev> init 1 irqpoll"
+   --append="root=<root-dev> <arch-specific-options>"
+
+If you are using a compressed bzImage/vmlinuz, then use following command
+to load dump-capture kernel.
+
+   kexec -p <dump-capture-kernel-bzImage> \
+   --initrd=<initrd-for-dump-capture-kernel> \
+   --append="root=<root-dev> <arch-specific-options>"
+
+Please note, that --args-linux does not need to be specified for ia64.
+It is planned to make this a no-op on that architecture, but for now
+it should be omitted
+
+Following are the arch specific command line options to be used while
+loading dump-capture kernel.
+
+For i386, x86_64 and ia64:
+	"init 1 irqpoll maxcpus=1"
+
+For ppc64:
+	"init 1 maxcpus=1 noirqdistrib"
 
 
 Notes on loading the dump-capture kernel:
 
-* <dump-capture-kernel> must be a vmlinux image (that is, an
-  uncompressed ELF image). bzImage does not work at this time.
-
 * By default, the ELF headers are stored in ELF64 format to support
   systems with more than 4GB memory. The --elf32-core-headers option can
   be used to force the generation of ELF32 headers. This is necessary
@@ -231,6 +335,9 @@ Notes on loading the dump-capture kernel:
 * "init 1" boots the dump-capture kernel into single-user mode without
   networking. If you want networking, use "init 3."
 
+* We generally don' have to bring up a SMP kernel just to capture the
+  dump. Hence generally it is useful either to build a UP dump-capture
+  kernel or specify maxcpus=1 option while loading dump-capture kernel.
 
 Kernel Panic
 ============

Documentation/pci.txt

@@ -1,142 +1,231 @@
-			 How To Write Linux PCI Drivers
 
-		   by Martin Mares <mj@ucw.cz> on 07-Feb-2000
+			How To Write Linux PCI Drivers
+
+		by Martin Mares <mj@ucw.cz> on 07-Feb-2000
+	updated by Grant Grundler <grundler@parisc-linux.org> on 23-Dec-2006
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-The world of PCI is vast and it's full of (mostly unpleasant) surprises.
-Different PCI devices have different requirements and different bugs --
-because of this, the PCI support layer in Linux kernel is not as trivial
-as one would wish. This short pamphlet tries to help all potential driver
-authors find their way through the deep forests of PCI handling.
+The world of PCI is vast and full of (mostly unpleasant) surprises.
+Since each CPU architecture implements different chip-sets and PCI devices
+have different requirements (erm, "features"), the result is the PCI support
+in the Linux kernel is not as trivial as one would wish. This short paper
+tries to introduce all potential driver authors to Linux APIs for
+PCI device drivers.
+
+A more complete resource is the third edition of "Linux Device Drivers"
+by Jonathan Corbet, Alessandro Rubini, and Greg Kroah-Hartman.
+LDD3 is available for free (under Creative Commons License) from:
+
+	http://lwn.net/Kernel/LDD3/
+
+However, keep in mind that all documents are subject to "bit rot".
+Refer to the source code if things are not working as described here.
+
+Please send questions/comments/patches about Linux PCI API to the
+"Linux PCI" <linux-pci@atrey.karlin.mff.cuni.cz> mailing list.
+
 
 
 0. Structure of PCI drivers
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
-There exist two kinds of PCI drivers: new-style ones (which leave most of
-probing for devices to the PCI layer and support online insertion and removal
-of devices [thus supporting PCI, hot-pluggable PCI and CardBus in a single
-driver]) and old-style ones which just do all the probing themselves. Unless
-you have a very good reason to do so, please don't use the old way of probing
-in any new code. After the driver finds the devices it wishes to operate
-on (either the old or the new way), it needs to perform the following steps:
+PCI drivers "discover" PCI devices in a system via pci_register_driver().
+Actually, it's the other way around. When the PCI generic code discovers
+a new device, the driver with a matching "description" will be notified.
+Details on this below.
+
+pci_register_driver() leaves most of the probing for devices to
+the PCI layer and supports online insertion/removal of devices [thus
+supporting hot-pluggable PCI, CardBus, and Express-Card in a single driver].
+pci_register_driver() call requires passing in a table of function
+pointers and thus dictates the high level structure of a driver.
+
+Once the driver knows about a PCI device and takes ownership, the
+driver generally needs to perform the following initialization:
 
 	Enable the device
-	Access device configuration space
-	Discover resources (addresses and IRQ numbers) provided by the device
-	Allocate these resources
-	Communicate with the device
+	Request MMIO/IOP resources
+	Set the DMA mask size (for both coherent and streaming DMA)
+	Allocate and initialize shared control data (pci_allocate_coherent())
+	Access device configuration space (if needed)
+	Register IRQ handler (request_irq())
+	Initialize non-PCI (i.e. LAN/SCSI/etc parts of the chip)
+	Enable DMA/processing engines
+
+When done using the device, and perhaps the module needs to be unloaded,
+the driver needs to take the follow steps:
+	Disable the device from generating IRQs
+	Release the IRQ (free_irq())
+	Stop all DMA activity
+	Release DMA buffers (both streaming and coherent)
+	Unregister from other subsystems (e.g. scsi or netdev)
+	Release MMIO/IOP resources
 	Disable the device
 
-Most of these topics are covered by the following sections, for the rest
-look at <linux/pci.h>, it's hopefully well commented.
+Most of these topics are covered in the following sections.
+For the rest look at LDD3 or <linux/pci.h> .
 
 If the PCI subsystem is not configured (CONFIG_PCI is not set), most of
-the functions described below are defined as inline functions either completely
-empty or just returning an appropriate error codes to avoid lots of ifdefs
-in the drivers.
+the PCI functions described below are defined as inline functions either
+completely empty or just returning an appropriate error codes to avoid
+lots of ifdefs in the drivers.
 
 
-1. New-style drivers
-~~~~~~~~~~~~~~~~~~~~
-The new-style drivers just call pci_register_driver during their initialization
-with a pointer to a structure describing the driver (struct pci_driver) which
-contains:
 
-	name		Name of the driver
+1. pci_register_driver() call
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+PCI device drivers call pci_register_driver() during their
+initialization with a pointer to a structure describing the driver
+(struct pci_driver):
+
+	field name	Description
+	----------	------------------------------------------------------
 	id_table	Pointer to table of device ID's the driver is
 			interested in.  Most drivers should export this
 			table using MODULE_DEVICE_TABLE(pci,...).
-	probe		Pointer to a probing function which gets called (during
-			execution of pci_register_driver for already existing
-			devices or later if a new device gets inserted) for all
-			PCI devices which match the ID table and are not handled
-			by the other drivers yet. This function gets passed a
-			pointer to the pci_dev structure representing the device
-			and also which entry in the ID table did the device
-			match. It returns zero when the driver has accepted the
-			device or an error code (negative number) otherwise.
-			This function always gets called from process context,
-			so it can sleep.
-	remove		Pointer to a function which gets called whenever a
-			device being handled by this driver is removed (either
-			during deregistration of the driver or when it's
-			manually pulled out of a hot-pluggable slot). This
-			function always gets called from process context, so it
-			can sleep.
-	save_state	Save a device's state before it's suspend.
+
+	probe		This probing function gets called (during execution
+			of pci_register_driver() for already existing
+			devices or later if a new device gets inserted) for
+			all PCI devices which match the ID table and are not
+			"owned" by the other drivers yet. This function gets
+			passed a "struct pci_dev *" for each device whose
+			entry in the ID table matches the device. The probe
+			function returns zero when the driver chooses to
+			take "ownership" of the device or an error code
+			(negative number) otherwise.
+			The probe function always gets called from process
+			context, so it can sleep.
+
+	remove		The remove() function gets called whenever a device
+			being handled by this driver is removed (either during
+			deregistration of the driver or when it's manually
+			pulled out of a hot-pluggable slot).
+			The remove function always gets called from process
+			context, so it can sleep.
+
 	suspend		Put device into low power state.
+	suspend_late	Put device into low power state.
+
+	resume_early	Wake device from low power state.
 	resume		Wake device from low power state.
+
+		(Please see Documentation/power/pci.txt for descriptions
+		of PCI Power Management and the related functions.)
+
 	enable_wake	Enable device to generate wake events from a low power
 			state.
 
-			(Please see Documentation/power/pci.txt for descriptions
-			of PCI Power Management and the related functions)
+	shutdown	Hook into reboot_notifier_list (kernel/sys.c).
+			Intended to stop any idling DMA operations.
+			Useful for enabling wake-on-lan (NIC) or changing
+			the power state of a device before reboot.
+			e.g. drivers/net/e100.c.
 
-The ID table is an array of struct pci_device_id ending with a all-zero entry.
-Each entry consists of:
+	err_handler	See Documentation/pci-error-recovery.txt
+
+	multithread_probe	Enable multi-threaded probe/scan. Driver must
+			provide its own locking/syncronization for init
+			operations if this is enabled.
+
+
+The ID table is an array of struct pci_device_id entries ending with an
+all-zero entry.  Each entry consists of:
+
+	vendor,device	Vendor and device ID to match (or PCI_ANY_ID)
 
-	vendor, device	Vendor and device ID to match (or PCI_ANY_ID)
 	subvendor,	Subsystem vendor and device ID to match (or PCI_ANY_ID)
-	subdevice
-	class,		Device class to match. The class_mask tells which bits
-	class_mask	of the class are honored during the comparison.
+	subdevice,
+
+	class		Device class, subclass, and "interface" to match.
+			See Appendix D of the PCI Local Bus Spec or
+			include/linux/pci_ids.h for a full list of classes.
+			Most drivers do not need to specify class/class_mask
+			as vendor/device is normally sufficient.
+
+	class_mask	limit which sub-fields of the class field are compared.
+			See drivers/scsi/sym53c8xx_2/ for example of usage.
+
 	driver_data	Data private to the driver.
+			Most drivers don't need to use driver_data field.
+			Best practice is to use driver_data as an index
+			into a static list of equivalent device types,
+			instead of using it as a pointer.
 
-Most drivers don't need to use the driver_data field.  Best practice
-for use of driver_data is to use it as an index into a static list of
-equivalent device types, not to use it as a pointer.
 
-Have a table entry {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID}
-to have probe() called for every PCI device known to the system.
+Most drivers only need PCI_DEVICE() or PCI_DEVICE_CLASS() to set up
+a pci_device_id table.
 
-New PCI IDs may be added to a device driver at runtime by writing
-to the file /sys/bus/pci/drivers/{driver}/new_id.  When added, the
-driver will probe for all devices it can support.
+New PCI IDs may be added to a device driver pci_ids table at runtime
+as shown below:
 
 echo "vendor device subvendor subdevice class class_mask driver_data" > \
- /sys/bus/pci/drivers/{driver}/new_id
-where all fields are passed in as hexadecimal values (no leading 0x).
-Users need pass only as many fields as necessary; vendor, device,
-subvendor, and subdevice fields default to PCI_ANY_ID (FFFFFFFF),
-class and classmask fields default to 0, and driver_data defaults to
-0UL.  Device drivers must initialize use_driver_data in the dynids struct
-in their pci_driver struct prior to calling pci_register_driver in order
-for the driver_data field to get passed to the driver. Otherwise, only a
-0 is passed in that field.
+/sys/bus/pci/drivers/{driver}/new_id
+
+All fields are passed in as hexadecimal values (no leading 0x).
+Users need pass only as many fields as necessary:
+	o vendor, device, subvendor, and subdevice fields default
+	  to PCI_ANY_ID (FFFFFFFF),
+	o class and classmask fields default to 0
+	o driver_data defaults to 0UL.
+
+Once added, the driver probe routine will be invoked for any unclaimed
+PCI devices listed in its (newly updated) pci_ids list.
 
 When the driver exits, it just calls pci_unregister_driver() and the PCI layer
 automatically calls the remove hook for all devices handled by the driver.
 
+
+1.1 "Attributes" for driver functions/data
+
 Please mark the initialization and cleanup functions where appropriate
 (the corresponding macros are defined in <linux/init.h>):
 
 	__init		Initialization code. Thrown away after the driver
 			initializes.
 	__exit		Exit code. Ignored for non-modular drivers.
-	__devinit	Device initialization code. Identical to __init if
-			the kernel is not compiled with CONFIG_HOTPLUG, normal
-			function otherwise.
+
+
+	__devinit	Device initialization code.
+			Identical to __init if the kernel is not compiled
+			with CONFIG_HOTPLUG, normal function otherwise.
 	__devexit	The same for __exit.
 
-Tips:
-	The module_init()/module_exit() functions (and all initialization
-        functions called only from these) should be marked __init/exit.
-	The struct pci_driver shouldn't be marked with any of these tags.
-	The ID table array should be marked __devinitdata.
-	The probe() and remove() functions (and all initialization
-	functions called only from these) should be marked __devinit/exit.
-	If you are sure the driver is not a hotplug driver then use only 
-	__init/exit __initdata/exitdata.
+Tips on when/where to use the above attributes:
+	o The module_init()/module_exit() functions (and all
+	  initialization functions called _only_ from these)
+	  should be marked __init/__exit.
 
-        Pointers to functions marked as __devexit must be created using
-        __devexit_p(function_name).  That will generate the function
-        name or NULL if the __devexit function will be discarded.
+	o Do not mark the struct pci_driver.
+
+	o The ID table array should be marked __devinitdata.
+
+	o The probe() and remove() functions should be marked __devinit
+	  and __devexit respectively.  All initialization functions
+	  exclusively called by the probe() routine, can be marked __devinit.
+	  Ditto for remove() and __devexit.
+
+	o If mydriver_probe() is marked with __devinit(), then all address
+	  references to mydriver_probe must use __devexit_p(mydriver_probe)
+	  (in the struct pci_driver declaration for example).
+	  __devexit_p() will generate the function name _or_ NULL if the
+	  function will be discarded.  For an example, see drivers/net/tg3.c.
+
+	o Do NOT mark a function if you are not sure which mark to use.
+	  Better to not mark the function than mark the function wrong.
 
 
-2. How to find PCI devices manually (the old style)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-PCI drivers not using the pci_register_driver() interface search
-for PCI devices manually using the following constructs:
+
+2. How to find PCI devices manually
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+PCI drivers should have a really good reason for not using the
+pci_register_driver() interface to search for PCI devices.
+The main reason PCI devices are controlled by multiple drivers
+is because one PCI device implements several different HW services.
+E.g. combined serial/parallel port/floppy controller.
+
+A manual search may be performed using the following constructs:
 
 Searching by vendor and device ID:
 
@@ -150,87 +239,311 @@ Searching by class ID (iterate in a similar way):
 
 Searching by both vendor/device and subsystem vendor/device ID:
 
-	pci_get_subsys(VENDOR_ID, DEVICE_ID, SUBSYS_VENDOR_ID, SUBSYS_DEVICE_ID, dev).
+	pci_get_subsys(VENDOR_ID,DEVICE_ID, SUBSYS_VENDOR_ID, SUBSYS_DEVICE_ID, dev).
 
-   You can use the constant PCI_ANY_ID as a wildcard replacement for
+You can use the constant PCI_ANY_ID as a wildcard replacement for
 VENDOR_ID or DEVICE_ID.  This allows searching for any device from a
 specific vendor, for example.
 
-   These functions are hotplug-safe. They increment the reference count on
+These functions are hotplug-safe. They increment the reference count on
 the pci_dev that they return. You must eventually (possibly at module unload)
 decrement the reference count on these devices by calling pci_dev_put().
 
 
-3. Enabling and disabling devices
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-   Before you do anything with the device you've found, you need to enable
-it by calling pci_enable_device() which enables I/O and memory regions of
-the device, allocates an IRQ if necessary, assigns missing resources if
-needed and wakes up the device if it was in suspended state. Please note
-that this function can fail.
 
-   If you want to use the device in bus mastering mode, call pci_set_master()
-which enables the bus master bit in PCI_COMMAND register and also fixes
-the latency timer value if it's set to something bogus by the BIOS.
+3. Device Initialization Steps
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-   If you want to use the PCI Memory-Write-Invalidate transaction,
+As noted in the introduction, most PCI drivers need the following steps
+for device initialization:
+
+	Enable the device
+	Request MMIO/IOP resources
+	Set the DMA mask size (for both coherent and streaming DMA)
+	Allocate and initialize shared control data (pci_allocate_coherent())
+	Access device configuration space (if needed)
+	Register IRQ handler (request_irq())
+	Initialize non-PCI (i.e. LAN/SCSI/etc parts of the chip)
+	Enable DMA/processing engines.
+
+The driver can access PCI config space registers at any time.
+(Well, almost. When running BIST, config space can go away...but
+that will just result in a PCI Bus Master Abort and config reads
+will return garbage).
+
+
+3.1 Enable the PCI device
+~~~~~~~~~~~~~~~~~~~~~~~~~
+Before touching any device registers, the driver needs to enable
+the PCI device by calling pci_enable_device(). This will:
+	o wake up the device if it was in suspended state,
+	o allocate I/O and memory regions of the device (if BIOS did not),
+	o allocate an IRQ (if BIOS did not).
+
+NOTE: pci_enable_device() can fail! Check the return value.
+NOTE2: Also see pci_enable_device_bars() below. Drivers can
+    attempt to enable only a subset of BARs they need.
+
+[ OS BUG: we don't check resource allocations before enabling those
+  resources. The sequence would make more sense if we called
+  pci_request_resources() before calling pci_enable_device().
+  Currently, the device drivers can't detect the bug when when two
+  devices have been allocated the same range. This is not a common
+  problem and unlikely to get fixed soon.
+
+  This has been discussed before but not changed as of 2.6.19:
+	http://lkml.org/lkml/2006/3/2/194
+]
+
+pci_set_master() will enable DMA by setting the bus master bit
+in the PCI_COMMAND register. It also fixes the latency timer value if
+it's set to something bogus by the BIOS.
+
+If the PCI device can use the PCI Memory-Write-Invalidate transaction,
 call pci_set_mwi().  This enables the PCI_COMMAND bit for Mem-Wr-Inval
 and also ensures that the cache line size register is set correctly.
-Make sure to check the return value of pci_set_mwi(), not all architectures
-may support Memory-Write-Invalidate.
+Check the return value of pci_set_mwi() as not all architectures
+or chip-sets may support Memory-Write-Invalidate.
 
-   If your driver decides to stop using the device (e.g., there was an
-error while setting it up or the driver module is being unloaded), it
-should call pci_disable_device() to deallocate any IRQ resources, disable
-PCI bus-mastering, etc.  You should not do anything with the device after
+
+3.2 Request MMIO/IOP resources
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Memory (MMIO), and I/O port addresses should NOT be read directly
+from the PCI device config space. Use the values in the pci_dev structure
+as the PCI "bus address" might have been remapped to a "host physical"
+address by the arch/chip-set specific kernel support.
+
+See Documentation/IO-mapping.txt for how to access device registers
+or device memory.
+
+The device driver needs to call pci_request_region() to verify
+no other device is already using the same address resource.
+Conversely, drivers should call pci_release_region() AFTER
 calling pci_disable_device().
+The idea is to prevent two devices colliding on the same address range.
 
-4. How to access PCI config space
+[ See OS BUG comment above. Currently (2.6.19), The driver can only
+  determine MMIO and IO Port resource availability _after_ calling
+  pci_enable_device(). ]
+
+Generic flavors of pci_request_region() are request_mem_region()
+(for MMIO ranges) and request_region() (for IO Port ranges).
+Use these for address resources that are not described by "normal" PCI
+BARs.
+
+Also see pci_request_selected_regions() below.
+
+
+3.3 Set the DMA mask size
+~~~~~~~~~~~~~~~~~~~~~~~~~
+[ If anything below doesn't make sense, please refer to
+  Documentation/DMA-API.txt. This section is just a reminder that
+  drivers need to indicate DMA capabilities of the device and is not
+  an authoritative source for DMA interfaces. ]
+
+While all drivers should explicitly indicate the DMA capability
+(e.g. 32 or 64 bit) of the PCI bus master, devices with more than
+32-bit bus master capability for streaming data need the driver
+to "register" this capability by calling pci_set_dma_mask() with
+appropriate parameters.  In general this allows more efficient DMA
+on systems where System RAM exists above 4G _physical_ address.
+
+Drivers for all PCI-X and PCIe compliant devices must call
+pci_set_dma_mask() as they are 64-bit DMA devices.
+
+Similarly, drivers must also "register" this capability if the device
+can directly address "consistent memory" in System RAM above 4G physical
+address by calling pci_set_consistent_dma_mask().
+Again, this includes drivers for all PCI-X and PCIe compliant devices.
+Many 64-bit "PCI" devices (before PCI-X) and some PCI-X devices are
+64-bit DMA capable for payload ("streaming") data but not control
+("consistent") data.
+
+
+3.4 Setup shared control data
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Once the DMA masks are set, the driver can allocate "consistent" (a.k.a. shared)
+memory.  See Documentation/DMA-API.txt for a full description of
+the DMA APIs. This section is just a reminder that it needs to be done
+before enabling DMA on the device.
+
+
+3.5 Initialize device registers
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Some drivers will need specific "capability" fields programmed
+or other "vendor specific" register initialized or reset.
+E.g. clearing pending interrupts.
+
+
+3.6 Register IRQ handler
+~~~~~~~~~~~~~~~~~~~~~~~~
+While calling request_irq() is the the last step described here,
+this is often just another intermediate step to initialize a device.
+This step can often be deferred until the device is opened for use.
+
+All interrupt handlers for IRQ lines should be registered with IRQF_SHARED
+and use the devid to map IRQs to devices (remember that all PCI IRQ lines
+can be shared).
+
+request_irq() will associate an interrupt handler and device handle
+with an interrupt number. Historically interrupt numbers represent
+IRQ lines which run from the PCI device to the Interrupt controller.
+With MSI and MSI-X (more below) the interrupt number is a CPU "vector".
+
+request_irq() also enables the interrupt. Make sure the device is
+quiesced and does not have any interrupts pending before registering
+the interrupt handler.
+
+MSI and MSI-X are PCI capabilities. Both are "Message Signaled Interrupts"
+which deliver interrupts to the CPU via a DMA write to a Local APIC.
+The fundamental difference between MSI and MSI-X is how multiple
+"vectors" get allocated. MSI requires contiguous blocks of vectors
+while MSI-X can allocate several individual ones.
+
+MSI capability can be enabled by calling pci_enable_msi() or
+pci_enable_msix() before calling request_irq(). This causes
+the PCI support to program CPU vector data into the PCI device
+capability registers.
+
+If your PCI device supports both, try to enable MSI-X first.
+Only one can be enabled at a time.  Many architectures, chip-sets,
+or BIOSes do NOT support MSI or MSI-X and the call to pci_enable_msi/msix
+will fail. This is important to note since many drivers have
+two (or more) interrupt handlers: one for MSI/MSI-X and another for IRQs.
+They choose which handler to register with request_irq() based on the
+return value from pci_enable_msi/msix().
+
+There are (at least) two really good reasons for using MSI:
+1) MSI is an exclusive interrupt vector by definition.
+   This means the interrupt handler doesn't have to verify
+   its device caused the interrupt.
+
+2) MSI avoids DMA/IRQ race conditions. DMA to host memory is guaranteed
+   to be visible to the host CPU(s) when the MSI is delivered. This
+   is important for both data coherency and avoiding stale control data.
+   This guarantee allows the driver to omit MMIO reads to flush
+   the DMA stream.
+
+See drivers/infiniband/hw/mthca/ or drivers/net/tg3.c for examples
+of MSI/MSI-X usage.
+
+
+
+4. PCI device shutdown
+~~~~~~~~~~~~~~~~~~~~~~~
+
+When a PCI device driver is being unloaded, most of the following
+steps need to be performed:
+
+	Disable the device from generating IRQs
+	Release the IRQ (free_irq())
+	Stop all DMA activity
+	Release DMA buffers (both streaming and consistent)
+	Unregister from other subsystems (e.g. scsi or netdev)
+	Disable device from responding to MMIO/IO Port addresses
+	Release MMIO/IO Port resource(s)
+
+
+4.1 Stop IRQs on the device
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+How to do this is chip/device specific. If it's not done, it opens
+the possibility of a "screaming interrupt" if (and only if)
+the IRQ is shared with another device.
+
+When the shared IRQ handler is "unhooked", the remaining devices
+using the same IRQ line will still need the IRQ enabled. Thus if the
+"unhooked" device asserts IRQ line, the system will respond assuming
+it was one of the remaining devices asserted the IRQ line. Since none
+of the other devices will handle the IRQ, the system will "hang" until
+it decides the IRQ isn't going to get handled and masks the IRQ (100,000
+iterations later). Once the shared IRQ is masked, the remaining devices
+will stop functioning properly. Not a nice situation.
+
+This is another reason to use MSI or MSI-X if it's available.
+MSI and MSI-X are defined to be exclusive interrupts and thus
+are not susceptible to the "screaming interrupt" problem.
+
+
+4.2 Release the IRQ
+~~~~~~~~~~~~~~~~~~~
+Once the device is quiesced (no more IRQs), one can call free_irq().
+This function will return control once any pending IRQs are handled,
+"unhook" the drivers IRQ handler from that IRQ, and finally release
+the IRQ if no one else is using it.
+
+
+4.3 Stop all DMA activity
+~~~~~~~~~~~~~~~~~~~~~~~~~
+It's extremely important to stop all DMA operations BEFORE attempting
+to deallocate DMA control data. Failure to do so can result in memory
+corruption, hangs, and on some chip-sets a hard crash.
+
+Stopping DMA after stopping the IRQs can avoid races where the
+IRQ handler might restart DMA engines.
+
+While this step sounds obvious and trivial, several "mature" drivers
+didn't get this step right in the past.
+
+
+4.4 Release DMA buffers
+~~~~~~~~~~~~~~~~~~~~~~~
+Once DMA is stopped, clean up streaming DMA first.
+I.e. unmap data buffers and return buffers to "upstream"
+owners if there is one.
+
+Then clean up "consistent" buffers which contain the control data.
+
+See Documentation/DMA-API.txt for details on unmapping interfaces.
+
+
+4.5 Unregister from other subsystems
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Most low level PCI device drivers support some other subsystem
+like USB, ALSA, SCSI, NetDev, Infiniband, etc. Make sure your
+driver isn't losing resources from that other subsystem.
+If this happens, typically the symptom is an Oops (panic) when
+the subsystem attempts to call into a driver that has been unloaded.
+
+
+4.6 Disable Device from responding to MMIO/IO Port addresses
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+io_unmap() MMIO or IO Port resources and then call pci_disable_device().
+This is the symmetric opposite of pci_enable_device().
+Do not access device registers after calling pci_disable_device().
+
+
+4.7 Release MMIO/IO Port Resource(s)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Call pci_release_region() to mark the MMIO or IO Port range as available.
+Failure to do so usually results in the inability to reload the driver.
+
+
+
+5. How to access PCI config space
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-   You can use pci_(read|write)_config_(byte|word|dword) to access the config
+
+You can use pci_(read|write)_config_(byte|word|dword) to access the config
 space of a device represented by struct pci_dev *. All these functions return 0
 when successful or an error code (PCIBIOS_...) which can be translated to a text
 string by pcibios_strerror. Most drivers expect that accesses to valid PCI
 devices don't fail.
 
-   If you don't have a struct pci_dev available, you can call
+If you don't have a struct pci_dev available, you can call
 pci_bus_(read|write)_config_(byte|word|dword) to access a given device
 and function on that bus.
 
-   If you access fields in the standard portion of the config header, please
+If you access fields in the standard portion of the config header, please
 use symbolic names of locations and bits declared in <linux/pci.h>.
 
-   If you need to access Extended PCI Capability registers, just call
+If you need to access Extended PCI Capability registers, just call
 pci_find_capability() for the particular capability and it will find the
 corresponding register block for you.
 
 
-5. Addresses and interrupts
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-   Memory and port addresses and interrupt numbers should NOT be read from the
-config space. You should use the values in the pci_dev structure as they might
-have been remapped by the kernel.
-
-   See Documentation/IO-mapping.txt for how to access device memory.
-
-   The device driver needs to call pci_request_region() to make sure
-no other device is already using the same resource. The driver is expected
-to determine MMIO and IO Port resource availability _before_ calling
-pci_enable_device().  Conversely, drivers should call pci_release_region()
-_after_ calling pci_disable_device(). The idea is to prevent two devices
-colliding on the same address range.
-
-Generic flavors of pci_request_region() are request_mem_region()
-(for MMIO ranges) and request_region() (for IO Port ranges).
-Use these for address resources that are not described by "normal" PCI
-interfaces (e.g. BAR).
-
-   All interrupt handlers should be registered with IRQF_SHARED and use the devid
-to map IRQs to devices (remember that all PCI interrupts are shared).
-
 
 6. Other interesting functions
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
 pci_find_slot()			Find pci_dev corresponding to given bus and
 				slot numbers.
 pci_set_power_state()		Set PCI Power Management state (0=D0 ... 3=D3)
@@ -247,11 +560,12 @@ pci_set_mwi()			Enable Memory-Write-Invalidate transactions.
 pci_clear_mwi()			Disable Memory-Write-Invalidate transactions.
 
 
+
 7. Miscellaneous hints
 ~~~~~~~~~~~~~~~~~~~~~~
-When displaying PCI slot names to the user (for example when a driver wants
-to tell the user what card has it found), please use pci_name(pci_dev)
-for this purpose.
+
+When displaying PCI device names to the user (for example when a driver wants
+to tell the user what card has it found), please use pci_name(pci_dev).
 
 Always refer to the PCI devices by a pointer to the pci_dev structure.
 All PCI layer functions use this identification and it's the only
@@ -259,31 +573,113 @@ reasonable one. Don't use bus/slot/function numbers except for very
 special purposes -- on systems with multiple primary buses their semantics
 can be pretty complex.
 
-If you're going to use PCI bus mastering DMA, take a look at
-Documentation/DMA-mapping.txt.
-
 Don't try to turn on Fast Back to Back writes in your driver.  All devices
 on the bus need to be capable of doing it, so this is something which needs
 to be handled by platform and generic code, not individual drivers.
 
 
+
 8. Vendor and device identifications
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-For the future, let's avoid adding device ids to include/linux/pci_ids.h.
 
-PCI_VENDOR_ID_xxx for vendors, and a hex constant for device ids.
+One is not not required to add new device ids to include/linux/pci_ids.h.
+Please add PCI_VENDOR_ID_xxx for vendors and a hex constant for device ids.
+
+PCI_VENDOR_ID_xxx constants are re-used. The device ids are arbitrary
+hex numbers (vendor controlled) and normally used only in a single
+location, the pci_device_id table.
+
+Please DO submit new vendor/device ids to pciids.sourceforge.net project.
+
 
-Rationale:  PCI_VENDOR_ID_xxx constants are re-used, but device ids are not.
-    Further, device ids are arbitrary hex numbers, normally used only in a
-    single location, the pci_device_id table.
 
 9. Obsolete functions
 ~~~~~~~~~~~~~~~~~~~~~
+
 There are several functions which you might come across when trying to
 port an old driver to the new PCI interface.  They are no longer present
 in the kernel as they aren't compatible with hotplug or PCI domains or
 having sane locking.
 
-pci_find_device()		Superseded by pci_get_device()
-pci_find_subsys()		Superseded by pci_get_subsys()
-pci_find_slot()			Superseded by pci_get_slot()
+pci_find_device()	Superseded by pci_get_device()
+pci_find_subsys()	Superseded by pci_get_subsys()
+pci_find_slot()		Superseded by pci_get_slot()
+
+
+The alternative is the traditional PCI device driver that walks PCI
+device lists. This is still possible but discouraged.
+
+
+
+10. pci_enable_device_bars() and Legacy I/O Port space
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Large servers may not be able to provide I/O port resources to all PCI
+devices. I/O Port space is only 64KB on Intel Architecture[1] and is
+likely also fragmented since the I/O base register of PCI-to-PCI
+bridge will usually be aligned to a 4KB boundary[2]. On such systems,
+pci_enable_device() and pci_request_region() will fail when
+attempting to enable I/O Port regions that don't have I/O Port
+resources assigned.
+
+Fortunately, many PCI devices which request I/O Port resources also
+provide access to the same registers via MMIO BARs. These devices can
+be handled without using I/O port space and the drivers typically
+offer a CONFIG_ option to only use MMIO regions
+(e.g. CONFIG_TULIP_MMIO). PCI devices typically provide I/O port
+interface for legacy OSes and will work when I/O port resources are not
+assigned. The "PCI Local Bus Specification Revision 3.0" discusses
+this on p.44, "IMPLEMENTATION NOTE".
+
+If your PCI device driver doesn't need I/O port resources assigned to
+I/O Port BARs, you should use pci_enable_device_bars() instead of
+pci_enable_device() in order not to enable I/O port regions for the
+corresponding devices. In addition, you should use
+pci_request_selected_regions() and pci_release_selected_regions()
+instead of pci_request_regions()/pci_release_regions() in order not to
+request/release I/O port regions for the corresponding devices.
+
+[1] Some systems support 64KB I/O port space per PCI segment.
+[2] Some PCI-to-PCI bridges support optional 1KB aligned I/O base.
+
+
+
+11. MMIO Space and "Write Posting"
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Converting a driver from using I/O Port space to using MMIO space
+often requires some additional changes. Specifically, "write posting"
+needs to be handled. Many drivers (e.g. tg3, acenic, sym53c8xx_2)
+already do this. I/O Port space guarantees write transactions reach the PCI
+device before the CPU can continue. Writes to MMIO space allow the CPU
+to continue before the transaction reaches the PCI device. HW weenies
+call this "Write Posting" because the write completion is "posted" to
+the CPU before the transaction has reached its destination.
+
+Thus, timing sensitive code should add readl() where the CPU is
+expected to wait before doing other work.  The classic "bit banging"
+sequence works fine for I/O Port space:
+
+       for (i = 8; --i; val >>= 1) {
+               outb(val & 1, ioport_reg);      /* write bit */
+               udelay(10);
+       }
+
+The same sequence for MMIO space should be:
+
+       for (i = 8; --i; val >>= 1) {
+               writeb(val & 1, mmio_reg);      /* write bit */
+               readb(safe_mmio_reg);           /* flush posted write */
+               udelay(10);
+       }
+
+It is important that "safe_mmio_reg" not have any side effects that
+interferes with the correct operation of the device.
+
+Another case to watch out for is when resetting a PCI device. Use PCI
+Configuration space reads to flush the writel(). This will gracefully
+handle the PCI master abort on all platforms if the PCI device is
+expected to not respond to a readl().  Most x86 platforms will allow
+MMIO reads to master abort (a.k.a. "Soft Fail") and return garbage
+(e.g. ~0). But many RISC platforms will crash (a.k.a."Hard Fail").
+

Documentation/powerpc/mpc52xx-device-tree-bindings.txt

@@ -4,6 +4,12 @@ MPC52xx Device Tree Bindings
 (c) 2006 Secret Lab Technologies Ltd
 Grant Likely <grant.likely at secretlab.ca>
 
+********** DRAFT ***********
+* WARNING: Do not depend on the stability of these bindings just yet.
+* The MPC5200 device tree conventions are still in flux
+* Keep an eye on the linuxppc-dev mailing list for more details
+********** DRAFT ***********
+
 I - Introduction
 ================
 Boards supported by the arch/powerpc architecture require device tree be
@@ -157,8 +163,8 @@ rtc@<addr>	rtc		*-rtc		Real time clock
 mscan@<addr>	mscan		*-mscan		CAN bus controller
 pci@<addr>	pci		*-pci		PCI bridge
 serial@<addr>	serial		*-psc-uart	PSC in serial mode
-i2s@<addr>	i2s		*-psc-i2s	PSC in i2s mode
-ac97@<addr>	ac97		*-psc-ac97	PSC in ac97 mode
+i2s@<addr>	sound		*-psc-i2s	PSC in i2s mode
+ac97@<addr>	sound		*-psc-ac97	PSC in ac97 mode
 spi@<addr>	spi		*-psc-spi	PSC in spi mode
 irda@<addr>	irda		*-psc-irda	PSC in IrDA mode
 spi@<addr>	spi		*-spi		MPC52xx spi device

Documentation/scsi/aacraid.txt

@@ -11,43 +11,42 @@ the original).
 Supported Cards/Chipsets
 -------------------------
 	PCI ID (pci.ids)	OEM	Product
-	9005:0283:9005:0283	Adaptec	Catapult (3210S with arc firmware)
-	9005:0284:9005:0284	Adaptec	Tomcat (3410S with arc firmware)
 	9005:0285:9005:0285	Adaptec	2200S (Vulcan)
 	9005:0285:9005:0286	Adaptec	2120S (Crusader)
 	9005:0285:9005:0287	Adaptec	2200S (Vulcan-2m)
 	9005:0285:9005:0288	Adaptec	3230S (Harrier)
 	9005:0285:9005:0289	Adaptec	3240S (Tornado)
 	9005:0285:9005:028a	Adaptec	2020ZCR (Skyhawk)
-	9005:0285:9005:028b	Adaptec 2025ZCR (Terminator)
+	9005:0285:9005:028b	Adaptec	2025ZCR (Terminator)
 	9005:0286:9005:028c	Adaptec	2230S (Lancer)
 	9005:0286:9005:028c	Adaptec	2230SLP (Lancer)
 	9005:0286:9005:028d	Adaptec	2130S (Lancer)
 	9005:0285:9005:028e	Adaptec	2020SA (Skyhawk)
-	9005:0285:9005:028f	Adaptec 2025SA (Terminator)
+	9005:0285:9005:028f	Adaptec	2025SA (Terminator)
 	9005:0285:9005:0290	Adaptec	2410SA (Jaguar)
-	9005:0285:103c:3227	Adaptec 2610SA (Bearcat HP release)
-	9005:0285:9005:0293	Adaptec 21610SA (Corsair-16)
+	9005:0285:103c:3227	Adaptec	2610SA (Bearcat HP release)
+	9005:0285:9005:0293	Adaptec	21610SA (Corsair-16)
 	9005:0285:9005:0296	Adaptec	2240S (SabreExpress)
 	9005:0285:9005:0292	Adaptec	2810SA (Corsair-8)
-	9005:0285:9005:0294	Adaptec	Prowler
-	9005:0285:9005:0297	Adaptec	4005SAS (AvonPark)
-	9005:0285:9005:0298	Adaptec	4000SAS (BlackBird)
+	9005:0285:9005:0297	Adaptec	4005 (AvonPark)
+	9005:0285:9005:0298	Adaptec	4000 (BlackBird)
 	9005:0285:9005:0299	Adaptec	4800SAS (Marauder-X)
 	9005:0285:9005:029a	Adaptec	4805SAS (Marauder-E)
 	9005:0286:9005:029b	Adaptec	2820SA (Intruder)
 	9005:0286:9005:029c	Adaptec	2620SA (Intruder)
 	9005:0286:9005:029d	Adaptec	2420SA (Intruder HP release)
-	9005:0286:9005:02a2	Adaptec	3800SAS (Hurricane44)
-	9005:0286:9005:02a7	Adaptec	3805SAS (Hurricane80)
-	9005:0286:9005:02a8	Adaptec	3400SAS (Hurricane40)
-	9005:0286:9005:02ac	Adaptec	1800SAS (Typhoon44)
-	9005:0286:9005:02b3	Adaptec	2400SAS (Hurricane40lm)
-	9005:0285:9005:02b5	Adaptec ASR5800 (Voodoo44)
-	9005:0285:9005:02b6	Adaptec ASR5805 (Voodoo80)
-	9005:0285:9005:02b7	Adaptec ASR5808 (Voodoo08)
+	9005:0286:9005:02ac	Adaptec	1800 (Typhoon44)
+	9005:0285:9005:02b5	Adaptec	5445 (Voodoo44)
+	9005:0285:9005:02b6	Adaptec	5805 (Voodoo80)
+	9005:0285:9005:02b7	Adaptec	5085 (Voodoo08)
+	9005:0285:9005:02bb	Adaptec	3405 (Marauder40LP)
+	9005:0285:9005:02bc	Adaptec	3805 (Marauder80LP)
+	9005:0285:9005:02c7	Adaptec	3085 (Marauder08ELP)
+	9005:0285:9005:02bd	Adaptec	31205 (Marauder120)
+	9005:0285:9005:02be	Adaptec	31605 (Marauder160)
+	9005:0285:9005:02c3	Adaptec	51205 (Voodoo120)
+	9005:0285:9005:02c4	Adaptec	51605 (Voodoo160)
 	1011:0046:9005:0364	Adaptec	5400S (Mustang)
-	1011:0046:9005:0365	Adaptec	5400S (Mustang)
 	9005:0287:9005:0800	Adaptec	Themisto (Jupiter)
 	9005:0200:9005:0200	Adaptec	Themisto (Jupiter)
 	9005:0286:9005:0800	Adaptec	Callisto (Jupiter)
@@ -68,21 +67,32 @@ Supported Cards/Chipsets
 	9005:0285:17aa:0287	Legend	S230 (Vulcan)
 	9005:0285:9005:0290	IBM	ServeRAID 7t (Jaguar)
 	9005:0285:1014:02F2	IBM	ServeRAID 8i (AvonPark)
-	9005:0285:1014:0312	IBM	ServeRAID 8i (AvonParkLite)
 	9005:0286:1014:9540	IBM	ServeRAID 8k/8k-l4 (AuroraLite)
 	9005:0286:1014:9580	IBM	ServeRAID 8k/8k-l8 (Aurora)
-	9005:0286:1014:034d	IBM	ServeRAID 8s (Hurricane)
-	9005:0286:9005:029e	ICP	ICP9024R0 (Lancer)
-	9005:0286:9005:029f	ICP	ICP9014R0 (Lancer)
+	9005:0285:1014:034d	IBM	ServeRAID 8s (Marauder-E)
+	9005:0286:9005:029e	ICP	ICP9024RO (Lancer)
+	9005:0286:9005:029f	ICP	ICP9014RO (Lancer)
 	9005:0286:9005:02a0	ICP	ICP9047MA (Lancer)
 	9005:0286:9005:02a1	ICP	ICP9087MA (Lancer)
-	9005:0286:9005:02a3	ICP	ICP5445AU (Hurricane44)
-	9005:0286:9005:02a4	ICP	ICP9085LI (Marauder-X)
-	9005:0286:9005:02a5	ICP	ICP5085BR (Marauder-E)
+	9005:0285:9005:02a4	ICP	ICP9085LI (Marauder-X)
+	9005:0285:9005:02a5	ICP	ICP5085BR (Marauder-E)
 	9005:0286:9005:02a6	ICP	ICP9067MA (Intruder-6)
-	9005:0286:9005:02a9	ICP	ICP5085AU (Hurricane80)
-	9005:0286:9005:02aa	ICP	ICP5045AU (Hurricane40)
-	9005:0286:9005:02b4	ICP	ICP5045AL (Hurricane40lm)
+	9005:0285:9005:02b2	ICP	(Voodoo 8 internal 8 external)
+	9005:0285:9005:02b8	ICP	ICP5445SL (Voodoo44)
+	9005:0285:9005:02b9	ICP	ICP5085SL (Voodoo80)
+	9005:0285:9005:02ba	ICP	ICP5805SL (Voodoo08)
+	9005:0285:9005:02bf	ICP	ICP5045BL (Marauder40LP)
+	9005:0285:9005:02c0	ICP	ICP5085BL (Marauder80LP)
+	9005:0285:9005:02c8	ICP	ICP5805BL (Marauder08ELP)
+	9005:0285:9005:02c1	ICP	ICP5125BR (Marauder120)
+	9005:0285:9005:02c2	ICP	ICP5165BR (Marauder160)
+	9005:0285:9005:02c5	ICP	ICP5125SL (Voodoo120)
+	9005:0285:9005:02c6	ICP	ICP5165SL (Voodoo160)
+	9005:0286:9005:02ab		(Typhoon40)
+	9005:0286:9005:02ad		(Aurora ARK)
+	9005:0286:9005:02ae		(Aurora Lite ARK)
+	9005:0285:9005:02b0		(Sunrise Lake ARK)
+	9005:0285:9005:02b1	Adaptec	(Voodoo 8 internal 8 external)
 
 People
 -------------------------

Documentation/usb/CREDITS

@@ -21,7 +21,7 @@ difficult to maintain, add yourself with a patch if desired.
   Bill Ryder <bryder@sgi.com>
   Thomas Sailer <sailer@ife.ee.ethz.ch>
   Gregory P. Smith <greg@electricrain.com>
-  Linus Torvalds <torvalds@osdl.org>
+  Linus Torvalds <torvalds@linux-foundation.org>
   Roman Weissgaerber <weissg@vienna.at>
   <Kazuki.Yasumatsu@fujixerox.co.jp>
 

Documentation/x86_64/boot-options.txt

@@ -52,6 +52,10 @@ APICs
 		 apicmaintimer. Useful when your PIT timer is totally
 		 broken.
 
+   disable_8254_timer / enable_8254_timer
+		 Enable interrupt 0 timer routing over the 8254 in addition to over
+	         the IO-APIC. The kernel tries to set a sensible default.
+
 Early Console
 
    syntax: earlyprintk=vga

MAINTAINERS

@@ -207,16 +207,45 @@ S:	Supported
 ACPI
 P:	Len Brown
 M:	len.brown@intel.com
+M:	lenb@kernel.org
 L:	linux-acpi@vger.kernel.org
 W:	http://acpi.sourceforge.net/
 T:	git kernel.org:/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git
-S:	Maintained
+S:	Supported
+
+ACPI BATTERY DRIVERS
+P:	Vladimir P. Lebedev
+M:	vladimir.p.lebedev@intel.com
+L:	linux-acpi@vger.kernel.org
+W:	http://acpi.sourceforge.net/
+S:	Supported
+
+ACPI EC DRIVER
+P:	Alexey Starikovskiy
+M:	alexey.y.starikovskiy@linux.intel.com
+L:	linux-acpi@vger.kernel.org
+W:	http://acpi.sourceforge.net/
+S:	Supported
+
+ACPI FAN DRIVER
+P:	Konstantin A. Karasyov
+M:	konstantin.a.karasyov@intel.com
+L:	linux-acpi@vger.kernel.org
+W:	http://acpi.sourceforge.net/
+S:	Supported
 
 ACPI PCI HOTPLUG DRIVER
 P:	Kristen Carlson Accardi
 M:	kristen.c.accardi@intel.com
 L:	pcihpd-discuss@lists.sourceforge.net
-S:	Maintained
+S:	Supported
+
+ACPI THERMAL DRIVER
+P:	Konstantin A. Karasyov
+M:	konstantin.a.karasyov@intel.com
+L:	linux-acpi@vger.kernel.org
+W:	http://acpi.sourceforge.net/
+S:	Supported
 
 AD1816 SOUND DRIVER
 P:	Thorsten Knabe
@@ -412,20 +441,32 @@ S:      Maintained
 ARM/INTEL IOP32X ARM ARCHITECTURE
 P:	Lennert Buytenhek
 M:	kernel@wantstofly.org
+P:	Dan Williams
+M:	dan.j.williams@intel.com
 L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S:	Maintained
+S:	Supported
+
+ARM/INTEL IOP33X ARM ARCHITECTURE
+P:	Dan Williams
+M:	dan.j.williams@intel.com
+L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
+S:	Supported
 
 ARM/INTEL IOP13XX ARM ARCHITECTURE
 P:	Lennert Buytenhek
 M:	kernel@wantstofly.org
+P:	Dan Williams
+M:	dan.j.williams@intel.com
 L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S:	Maintained
+S:	Supported
 
 ARM/INTEL IQ81342EX MACHINE SUPPORT
 P:	Lennert Buytenhek
 M:	kernel@wantstofly.org
+P:	Dan Williams
+M:	dan.j.williams@intel.com
 L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S:	Maintained
+S:	Supported
 
 ARM/INTEL IXP2000 ARM ARCHITECTURE
 P:	Lennert Buytenhek
@@ -448,8 +489,10 @@ S:	Maintained
 ARM/INTEL XSC3 (MANZANO) ARM CORE
 P:	Lennert Buytenhek
 M:	kernel@wantstofly.org
+P:	Dan Williams
+M:	dan.j.williams@intel.com
 L:	linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S:	Maintained
+S:	Supported
 
 ARM/IP FABRICS DOUBLE ESPRESSO MACHINE SUPPORT
 P:	Lennert Buytenhek
@@ -1071,7 +1114,7 @@ DOCKING STATION DRIVER
 P:	Kristen Carlson Accardi
 M:	kristen.c.accardi@intel.com
 L:	linux-acpi@vger.kernel.org
-S:	Maintained
+S:	Supported
 
 DOUBLETALK DRIVER
 P:	James R. Van Zandt
@@ -1094,9 +1137,9 @@ T:	git kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6.git
 S:	Maintained
 
 DSCC4 DRIVER
-P:	François Romieu
-M:	romieu@cogenit.fr
-M:	romieu@ensta.fr
+P:	Francois Romieu
+M:	romieu@fr.zoreil.com
+L:	netdev@vger.kernel.org
 S:	Maintained
 
 DVB SUBSYSTEM AND DRIVERS
@@ -1211,7 +1254,7 @@ S:	Maintained
 
 ETHERNET BRIDGE
 P:	Stephen Hemminger
-M:	shemminger@osdl.org
+M:	shemminger@linux-foundation.org
 L:	bridge@osdl.org
 W:	http://bridge.sourceforge.net/
 S:	Maintained
@@ -1555,12 +1598,11 @@ M:	ipslinux@adaptec.com
 W:	http://www.developer.ibm.com/welcome/netfinity/serveraid.html
 S:	Supported 
 
-IDE DRIVER [GENERAL]
+IDE SUBSYSTEM
 P:	Bartlomiej Zolnierkiewicz
-M:	B.Zolnierkiewicz@elka.pw.edu.pl
-L:	linux-kernel@vger.kernel.org
+M:	bzolnier@gmail.com
 L:	linux-ide@vger.kernel.org
-T:	git kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6.git
+T:	quilt kernel.org/pub/linux/kernel/people/bart/pata-2.6/
 S:	Maintained
 
 IDE/ATAPI CDROM DRIVER
@@ -1885,11 +1927,10 @@ S:	Maintained
 
 KERNEL NFSD
 P:	Neil Brown
-M:	neilb@cse.unsw.edu.au
+M:	neilb@suse.de
 L:	nfs@lists.sourceforge.net
 W:	http://nfs.sourceforge.net/
-W:	http://www.cse.unsw.edu.au/~neilb/patches/linux-devel/
-S:	Maintained
+S:	Supported
 
 KERNEL VIRTUAL MACHINE (KVM)
 P:	Avi Kivity
@@ -2234,7 +2275,7 @@ S:	Maintained
 
 NETEM NETWORK EMULATOR
 P:	Stephen Hemminger
-M:	shemminger@osdl.org
+M:	shemminger@linux-foundation.org
 L:	netem@osdl.org
 S:	Maintained
 
@@ -2521,7 +2562,7 @@ PCIE HOTPLUG DRIVER
 P:	Kristen Carlson Accardi
 M:	kristen.c.accardi@intel.com
 L:	pcihpd-discuss@lists.sourceforge.net
-S:	Maintained
+S:	Supported
 
 PCMCIA SUBSYSTEM
 P:	Linux PCMCIA Team
@@ -2622,6 +2663,12 @@ M:	promise@pnd-pc.demon.co.uk
 W:	http://www.pnd-pc.demon.co.uk/promise/
 S:	Maintained
 
+PROMISE SATA TX2/TX4 CONTROLLER LIBATA DRIVER
+P:	Mikael Pettersson
+M:	mikpe@it.uu.se
+L:	linux-ide@vger.kernel.org
+S:	Maintained
+
 PS3 PLATFORM SUPPORT
 P:	Geoff Levand
 M:	geoffrey.levand@am.sony.com
@@ -2944,9 +2991,9 @@ SOFTWARE RAID (Multiple Disks) SUPPORT
 P:	Ingo Molnar
 M:	mingo@redhat.com
 P:	Neil Brown
-M:	neilb@cse.unsw.edu.au
+M:	neilb@suse.de
 L:	linux-raid@vger.kernel.org
-S:	Maintained
+S:	Supported
 
 SOFTWARE SUSPEND:
 P:	Pavel Machek
@@ -3021,7 +3068,7 @@ SHPC HOTPLUG DRIVER
 P:	Kristen Carlson Accardi
 M:	kristen.c.accardi@intel.com
 L:	pcihpd-discuss@lists.sourceforge.net
-S:	Maintained
+S:	Supported
 
 SECURE DIGITAL HOST CONTROLLER INTERFACE DRIVER
 P:	Pierre Ossman
@@ -3032,7 +3079,7 @@ S:	Maintained
 
 SKGE, SKY2 10/100/1000 GIGABIT ETHERNET DRIVERS
 P:	Stephen Hemminger
-M:	shemminger@osdl.org
+M:	shemminger@linux-foundation.org
 L:	netdev@vger.kernel.org
 S:	Maintained
 
@@ -3285,9 +3332,8 @@ W:	http://www.linux-usb.org/gadget
 S:	Maintained
 
 USB HID/HIDBP DRIVERS
-P:	Vojtech Pavlik
-M:	vojtech@suse.cz
-L:	linux-usb-users@lists.sourceforge.net
+P:	Jiri Kosina
+M:	jkosina@suse.cz
 L:	linux-usb-devel@lists.sourceforge.net
 S:	Maintained
 
@@ -3527,6 +3573,12 @@ M:	khali@linux-fr.org
 L:	i2c@lm-sensors.org
 S:	Maintained
 
+VIA VELOCITY NETWORK DRIVER
+P:	Francois Romieu
+M:	romieu@fr.zoreil.com
+L:	netdev@vger.kernel.org
+S:	Maintained
+
 UCLINUX (AND M68KNOMMU)
 P:	Greg Ungerer
 M:	gerg@uclinux.org

Makefile

@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 20
-EXTRAVERSION =-rc4
+EXTRAVERSION =-rc7
 NAME = Homicidal Dwarf Hamster
 
 # *DOCUMENTATION*
@@ -368,14 +368,10 @@ endif
 # Detect when mixed targets is specified, and make a second invocation
 # of make so .config is not included in this case either (for *config).
 
-PHONY += generated_headers
-
-generated_headers: include/linux/version.h include/linux/compile.h \
-		include/linux/utsrelease.h
-
-no-dot-config-targets := generated_headers clean mrproper distclean \
+no-dot-config-targets := clean mrproper distclean \
 			 cscope TAGS tags help %docs check% \
-			 headers_% kernelrelease kernelversion
+			 include/linux/version.h headers_% \
+			 kernelrelease kernelversion
 
 config-targets := 0
 mixed-targets  := 0
@@ -738,16 +734,6 @@ debug_kallsyms: .tmp_map$(last_kallsyms)
 
 endif # ifdef CONFIG_KALLSYMS
 
-# compile.h changes depending on hostname, generation number, etc,
-# so we regenerate it always.
-# mkcompile_h will make sure to only update the
-# actual file if its content has changed.
-
-include/linux/compile.h: FORCE
-	@echo '  CHK     $@'
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
-	"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(CFLAGS)"
-
 # vmlinux image - including updated kernel symbols
 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
 ifdef CONFIG_HEADERS_CHECK
@@ -866,8 +852,8 @@ endif
 # prepare2 creates a makefile if using a separate output directory
 prepare2: prepare3 outputmakefile
 
-prepare1: prepare2 generated_headers include/asm include/config/auto.conf
-
+prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
+                   include/asm include/config/auto.conf
 ifneq ($(KBUILD_MODULES),)
 	$(Q)mkdir -p $(MODVERDIR)
 	$(Q)rm -f $(MODVERDIR)/*
@@ -936,14 +922,14 @@ export INSTALL_HDR_PATH
 HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
 
 PHONY += headers_install_all
-headers_install_all: generated_headers scripts_basic FORCE
+headers_install_all: include/linux/version.h scripts_basic FORCE
 	$(Q)$(MAKE) $(build)=scripts scripts/unifdef
 	$(Q)for arch in $(HDRARCHES); do \
 	 $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
 	 done
 
 PHONY += headers_install
-headers_install: generated_headers scripts_basic FORCE
+headers_install: include/linux/version.h scripts_basic FORCE
 	@if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
 	  echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
 	  exit 1 ; fi
@@ -1040,7 +1026,8 @@ CLEAN_FILES +=	vmlinux System.map \
 # Directories & files removed with 'make mrproper'
 MRPROPER_DIRS  += include/config include2 usr/include
 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
-                  include/linux/autoconf.h include/linux/utsrelease.h include/linux/version.h \
+                  include/linux/autoconf.h include/linux/version.h      \
+                  include/linux/utsrelease.h                            \
 		  Module.symvers tags TAGS cscope*
 
 # clean - Delete most, but leave enough to build external modules
@@ -1129,15 +1116,15 @@ help:
 	@echo  '  cscope	  - Generate cscope index'
 	@echo  '  kernelrelease	  - Output the release version string'
 	@echo  '  kernelversion	  - Output the version stored in Makefile'
-	@if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+	@if [ -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
 	 echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
+	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
 	 fi
-	@echo  '                    (default: $(INSTALL_HDR_PATH))'
 	@echo  ''
 	@echo  'Static analysers'
 	@echo  '  checkstack      - Generate a list of stack hogs'
 	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
-	@if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+	@if [ -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
 	 echo  '  headers_check   - Sanity check on exported headers'; \
 	 fi
 	@echo  ''

README

@@ -278,8 +278,8 @@ IF SOMETHING GOES WRONG:
    the file MAINTAINERS to see if there is a particular person associated
    with the part of the kernel that you are having trouble with. If there
    isn't anyone listed there, then the second best thing is to mail
-   them to me (torvalds@osdl.org), and possibly to any other relevant
-   mailing-list or to the newsgroup.
+   them to me (torvalds@linux-foundation.org), and possibly to any other
+   relevant mailing-list or to the newsgroup.
 
  - In all bug-reports, *please* tell what kernel you are talking about,
    how to duplicate the problem, and what your setup is (use your common

arch/alpha/kernel/process.c

@@ -47,6 +47,7 @@
  * Power off function, if any
  */
 void (*pm_power_off)(void) = machine_power_off;
+EXPORT_SYMBOL(pm_power_off);
 
 void
 cpu_idle(void)

arch/arm/configs/at91sam9260ek_defconfig

@@ -923,7 +923,6 @@ CONFIG_FORCED_INLINING=y
 # CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_DEBUG_USER=y
-# CONFIG_DEBUG_WAITQ is not set
 # CONFIG_DEBUG_ERRORS is not set
 CONFIG_DEBUG_LL=y
 # CONFIG_DEBUG_ICEDCC is not set

arch/arm/configs/at91sam9261ek_defconfig

@@ -1079,7 +1079,6 @@ CONFIG_FORCED_INLINING=y
 # CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_DEBUG_USER=y
-# CONFIG_DEBUG_WAITQ is not set
 # CONFIG_DEBUG_ERRORS is not set
 CONFIG_DEBUG_LL=y
 # CONFIG_DEBUG_ICEDCC is not set

arch/arm/kernel/entry-armv.S

@@ -436,7 +436,7 @@ __und_usr:
 	usr_entry
 
 	tst	r3, #PSR_T_BIT			@ Thumb mode?
-	bne	fpundefinstr			@ ignore FP
+	bne	__und_usr_unknown		@ ignore FP
 	sub	r4, r2, #4
 
 	@
@@ -448,7 +448,7 @@ __und_usr:
 	@
 1:	ldrt	r0, [r4]
 	adr	r9, ret_from_exception
-	adr	lr, fpundefinstr
+	adr	lr, __und_usr_unknown
 	@
 	@ fallthrough to call_fpe
 	@
@@ -476,7 +476,9 @@ __und_usr:
  * Emulators may wish to make use of the following registers:
  *  r0  = instruction opcode.
  *  r2  = PC+4
+ *  r9  = normal "successful" return address
  *  r10 = this threads thread_info structure.
+ *  lr  = unrecognised instruction return address
  */
 call_fpe:
 	tst	r0, #0x08000000			@ only CDP/CPRT/LDC/STC have bit 27
@@ -545,10 +547,12 @@ do_fpe:
 
 	.data
 ENTRY(fp_enter)
-	.word	fpundefinstr
+	.word	no_fp
 	.text
 
-fpundefinstr:
+no_fp:	mov	pc, lr
+
+__und_usr_unknown:
 	mov	r0, sp
 	adr	lr, ret_from_exception
 	b	do_undefinstr

arch/arm/kernel/head.S

@@ -22,6 +22,10 @@
 #include <asm/thread_info.h>
 #include <asm/system.h>
 
+#if (PHYS_OFFSET & 0x001fffff)
+#error "PHYS_OFFSET must be at an even 2MiB boundary!"
+#endif
+
 #define KERNEL_RAM_VADDR	(PAGE_OFFSET + TEXT_OFFSET)
 #define KERNEL_RAM_PADDR	(PHYS_OFFSET + TEXT_OFFSET)
 
@@ -251,7 +255,8 @@ __create_page_tables:
 	 * Then map first 1MB of ram in case it contains our boot params.
 	 */
 	add	r0, r4, #PAGE_OFFSET >> 18
-	orr	r6, r7, #PHYS_OFFSET
+	orr	r6, r7, #(PHYS_OFFSET & 0xff000000)
+	orr	r6, r6, #(PHYS_OFFSET & 0x00e00000)
 	str	r6, [r0]
 
 #ifdef CONFIG_XIP_KERNEL

arch/arm/kernel/time.c

@@ -29,6 +29,8 @@
 #include <linux/timer.h>
 #include <linux/irq.h>
 
+#include <linux/mc146818rtc.h>
+
 #include <asm/leds.h>
 #include <asm/thread_info.h>
 #include <asm/mach/time.h>
@@ -85,6 +87,17 @@ unsigned long long __attribute__((weak)) sched_clock(void)
 	return (unsigned long long)jiffies * (1000000000 / HZ);
 }
 
+/*
+ * An implementation of printk_clock() independent from
+ * sched_clock().  This avoids non-bootable kernels when
+ * printk_clock is enabled.
+ */
+unsigned long long printk_clock(void)
+{
+	return (unsigned long long)(jiffies - INITIAL_JIFFIES) *
+			(1000000000 / HZ);
+}
+
 static unsigned long next_rtc_update;
 
 /*

arch/arm/kernel/traps.c

@@ -27,6 +27,7 @@
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include <asm/traps.h>
+#include <asm/io.h>
 
 #include "ptrace.h"
 #include "signal.h"

arch/arm/mach-at91rm9200/at91rm9200_devices.c

@@ -272,7 +272,7 @@ void __init at91_add_device_cf(struct at91_cf_data *data)
 	at91_set_A_periph(AT91_PIN_PC12, 0);	/* NCS6/CFCE2 */
 
 	/* nWAIT is _not_ a default setting */
-	at91_set_A_periph(AT91_PIN_PC6, 1);	/*  nWAIT */
+	at91_set_A_periph(AT91_PIN_PC6, 1);	/* nWAIT */
 
 	cf_data = *data;
 	platform_device_register(&at91rm9200_cf_device);

arch/arm/mach-at91rm9200/at91sam9260.c

@@ -16,6 +16,7 @@
 #include <asm/mach/map.h>
 #include <asm/arch/at91sam9260.h>
 #include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
 
 #include "generic.h"
 #include "clock.h"
@@ -212,7 +213,7 @@ static struct at91_gpio_bank at91sam9260_gpio[] = {
 
 static void at91sam9260_reset(void)
 {
-#warning "Implement CPU reset"
+	at91_sys_write(AT91_RSTC_CR, (0xA5 << 24) | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 }
 
 

arch/arm/mach-at91rm9200/at91sam9261.c

@@ -16,6 +16,7 @@
 #include <asm/mach/map.h>
 #include <asm/arch/at91sam9261.h>
 #include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
 
 #include "generic.h"
 #include "clock.h"
@@ -207,7 +208,7 @@ static struct at91_gpio_bank at91sam9261_gpio[] = {
 
 static void at91sam9261_reset(void)
 {
-#warning "Implement CPU reset"
+	at91_sys_write(AT91_RSTC_CR, (0xA5 << 24) | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 }
 
 

arch/arm/mach-at91rm9200/gpio.c

@@ -20,7 +20,6 @@
 #include <asm/io.h>
 #include <asm/hardware.h>
 #include <asm/arch/at91_pio.h>
-#include <asm/arch/at91_pmc.h>
 #include <asm/arch/gpio.h>
 
 #include "generic.h"
@@ -224,17 +223,17 @@ static u32 backups[MAX_GPIO_BANKS];
 static int gpio_irq_set_wake(unsigned pin, unsigned state)
 {
 	unsigned	mask = pin_to_mask(pin);
+	unsigned	bank = (pin - PIN_BASE) / 32;
 
-	pin -= PIN_BASE;
-	pin /= 32;
-
-	if (unlikely(pin >= MAX_GPIO_BANKS))
+	if (unlikely(bank >= MAX_GPIO_BANKS))
 		return -EINVAL;
 
 	if (state)
-		wakeups[pin] |= mask;
+		wakeups[bank] |= mask;
 	else
-		wakeups[pin] &= ~mask;
+		wakeups[bank] &= ~mask;
+
+	set_irq_wake(gpio[bank].id, state);
 
 	return 0;
 }
@@ -246,29 +245,15 @@ void at91_gpio_suspend(void)
 	for (i = 0; i < gpio_banks; i++) {
 		u32 pio = gpio[i].offset;
 
-		/*
-		 * Note: drivers should have disabled GPIO interrupts that
-		 * aren't supposed to be wakeup sources.
-		 * But that is not much good on ARM.....  disable_irq() does
-		 * not update the hardware immediately, so the hardware mask
-		 * (IMR) has the wrong value (not current, too much is
-		 * permitted).
-		 *
-		 * Our workaround is to disable all non-wakeup IRQs ...
-		 * which is exactly what correct drivers asked for in the
-		 * first place!
-		 */
 		backups[i] = at91_sys_read(pio + PIO_IMR);
 		at91_sys_write(pio + PIO_IDR, backups[i]);
 		at91_sys_write(pio + PIO_IER, wakeups[i]);
 
-		if (!wakeups[i]) {
-			disable_irq_wake(gpio[i].id);
-			at91_sys_write(AT91_PMC_PCDR, 1 << gpio[i].id);
-		} else {
-			enable_irq_wake(gpio[i].id);
+		if (!wakeups[i])
+			clk_disable(gpio[i].clock);
+		else {
 #ifdef CONFIG_PM_DEBUG
-			printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", "ABCD"[i], wakeups[i]);
+			printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", 'A'+i, wakeups[i]);
 #endif
 		}
 	}
@@ -281,9 +266,11 @@ void at91_gpio_resume(void)
 	for (i = 0; i < gpio_banks; i++) {
 		u32 pio = gpio[i].offset;
 
+		if (!wakeups[i])
+			clk_enable(gpio[i].clock);
+
 		at91_sys_write(pio + PIO_IDR, wakeups[i]);
 		at91_sys_write(pio + PIO_IER, backups[i]);
-		at91_sys_write(AT91_PMC_PCER, 1 << gpio[i].id);
 	}
 }
 

arch/arm/mach-imx/cpufreq.c

@@ -184,6 +184,17 @@ static int imx_set_target(struct cpufreq_policy *policy,
 	long sysclk;
 	unsigned int bclk_div = 1;
 
+	/*
+	 * Some governors do not respects CPU and policy lower limits
+	 * which leads to bad things (division by zero etc), ensure
+	 * that such things do not happen.
+	 */
+	if(target_freq < policy->cpuinfo.min_freq)
+		target_freq = policy->cpuinfo.min_freq;
+
+	if(target_freq < policy->min)
+		target_freq = policy->min;
+
 	freq = target_freq * 1000;
 
 	pr_debug(KERN_DEBUG "imx: requested frequency %ld Hz, mpctl0 at boot 0x%08x\n",
@@ -258,7 +269,8 @@ static int __init imx_cpufreq_driver_init(struct cpufreq_policy *policy)
 	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
 	policy->cpuinfo.min_freq = 8000;
 	policy->cpuinfo.max_freq = 200000;
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+	 /* Manual states, that PLL stabilizes in two CLK32 periods */
+	policy->cpuinfo.transition_latency = 4 * 1000000000LL / CLK32;
 	return 0;
 }
 

arch/arm/mach-s3c2410/gpio.c

@@ -57,6 +57,7 @@ void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function)
 	case S3C2410_GPIO_SFN2:
 	case S3C2410_GPIO_SFN3:
 		if (pin < S3C2410_GPIO_BANKB) {
+			function -= 1;
 			function &= 1;
 			function <<= S3C2410_GPIO_OFFSET(pin);
 		} else {
@@ -83,15 +84,18 @@ EXPORT_SYMBOL(s3c2410_gpio_cfgpin);
 unsigned int s3c2410_gpio_getcfg(unsigned int pin)
 {
 	void __iomem *base = S3C24XX_GPIO_BASE(pin);
-	unsigned long mask;
+	unsigned long val = __raw_readl(base);
 
 	if (pin < S3C2410_GPIO_BANKB) {
-		mask = 1 << S3C2410_GPIO_OFFSET(pin);
+		val >>= S3C2410_GPIO_OFFSET(pin);
+		val &= 1;
+		val += 1;
 	} else {
-		mask = 3 << S3C2410_GPIO_OFFSET(pin)*2;
+		val >>= S3C2410_GPIO_OFFSET(pin)*2;
+		val &= 3;
 	}
 
-	return __raw_readl(base) & mask;
+	return val | S3C2410_GPIO_INPUT;
 }
 
 EXPORT_SYMBOL(s3c2410_gpio_getcfg);

arch/arm/mach-s3c2410/pm.c

@@ -451,15 +451,14 @@ static void s3c2410_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
 		irqstate = s3c_irqwake_eintmask & (1L<<irqoffs);
 
 	pinstate = s3c2410_gpio_getcfg(pin);
-	pinstate >>= S3C2410_GPIO_OFFSET(pin)*2;
 
 	if (!irqstate) {
-		if (pinstate == 0x02)
+		if (pinstate == S3C2410_GPIO_IRQ)
 			DBG("Leaving IRQ %d (pin %d) enabled\n", irq, pin);
 	} else {
-		if (pinstate == 0x02) {
+		if (pinstate == S3C2410_GPIO_IRQ) {
 			DBG("Disabling IRQ %d (pin %d)\n", irq, pin);
-			s3c2410_gpio_cfgpin(pin, 0x00);
+			s3c2410_gpio_cfgpin(pin, S3C2410_GPIO_INPUT);
 		}
 	}
 }

arch/arm/mach-s3c2410/s3c2412-dma.c

@@ -133,8 +133,8 @@ static struct s3c24xx_dma_map __initdata s3c2412_dma_mappings[] = {
 static void s3c2412_dma_select(struct s3c2410_dma_chan *chan,
 			       struct s3c24xx_dma_map *map)
 {
-	writel(chan->regs + S3C2412_DMA_DMAREQSEL,
-	       map->channels[0] | S3C2412_DMAREQSEL_HW);
+	writel(map->channels[0] | S3C2412_DMAREQSEL_HW,
+	       chan->regs + S3C2412_DMA_DMAREQSEL);
 }
 
 static struct s3c24xx_dma_selection __initdata s3c2412_dma_sel = {

arch/arm/mm/flush.c

@@ -202,3 +202,42 @@ void flush_dcache_page(struct page *page)
 	}
 }
 EXPORT_SYMBOL(flush_dcache_page);
+
+/*
+ * Flush an anonymous page so that users of get_user_pages()
+ * can safely access the data.  The expected sequence is:
+ *
+ *  get_user_pages()
+ *    -> flush_anon_page
+ *  memcpy() to/from page
+ *  if written to page, flush_dcache_page()
+ */
+void __flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
+{
+	unsigned long pfn;
+
+	/* VIPT non-aliasing caches need do nothing */
+	if (cache_is_vipt_nonaliasing())
+		return;
+
+	/*
+	 * Write back and invalidate userspace mapping.
+	 */
+	pfn = page_to_pfn(page);
+	if (cache_is_vivt()) {
+		flush_cache_page(vma, vmaddr, pfn);
+	} else {
+		/*
+		 * For aliasing VIPT, we can flush an alias of the
+		 * userspace address only.
+		 */
+		flush_pfn_alias(pfn, vmaddr);
+	}
+
+	/*
+	 * Invalidate kernel mapping.  No data should be contained
+	 * in this mapping of the page.  FIXME: this is overkill
+	 * since we actually ask for a write-back and invalidate.
+	 */
+	__cpuc_flush_dcache_page(page_address(page));
+}

arch/arm/mm/init.c

@@ -52,15 +52,18 @@ void show_mem(void)
 	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
 
 	for_each_online_node(node) {
+		pg_data_t *n = NODE_DATA(node);
+		struct page *map = n->node_mem_map - n->node_start_pfn;
+
 		for_each_nodebank (i,mi,node) {
 			unsigned int pfn1, pfn2;
 			struct page *page, *end;
 
-			pfn1 = mi->bank[i].start >> PAGE_SHIFT;
-			pfn2 = (mi->bank[i].size + mi->bank[i].start) >> PAGE_SHIFT;
+			pfn1 = __phys_to_pfn(mi->bank[i].start);
+			pfn2 = __phys_to_pfn(mi->bank[i].size + mi->bank[i].start);
 
-			page = NODE_MEM_MAP(node) + pfn1;
-			end  = NODE_MEM_MAP(node) + pfn2;
+			page = map + pfn1;
+			end  = map + pfn2;
 
 			do {
 				total++;

arch/arm/mm/ioremap.c

@@ -300,7 +300,8 @@ __ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
  	addr = (unsigned long)area->addr;
 
 #ifndef CONFIG_SMP
-	if ((((cpu_architecture() >= CPU_ARCH_ARMv6) && (get_cr() & CR_XP)) ||
+	if (DOMAIN_IO == 0 &&
+	    (((cpu_architecture() >= CPU_ARCH_ARMv6) && (get_cr() & CR_XP)) ||
 	       cpu_is_xsc3()) &&
 	       !((__pfn_to_phys(pfn) | size | addr) & ~SUPERSECTION_MASK)) {
 		area->flags |= VM_ARM_SECTION_MAPPING;

arch/arm/mm/proc-xscale.S

@@ -708,7 +708,7 @@ __8032x_proc_info:
 	.type	__8033x_proc_info,#object
 __8033x_proc_info:
 	.long	0x69054010
-	.long	0xffffff30
+	.long	0xfffffd30
 	.long   PMD_TYPE_SECT | \
 		PMD_SECT_BUFFERABLE | \
 		PMD_SECT_CACHEABLE | \

arch/arm/tools/mach-types

@@ -12,7 +12,7 @@
 #
 #   http://www.arm.linux.org.uk/developer/machines/?action=new
 #
-# Last update: Thu Dec 7 17:19:20 2006
+# Last update: Tue Jan 16 16:52:56 2007
 #
 # machine_is_xxx	CONFIG_xxxx		MACH_TYPE_xxx		number
 #
@@ -1219,3 +1219,26 @@ zevio_1020		MACH_ZEVIO_1020		ZEVIO_1020		1207
 hitrack			MACH_HITRACK		HITRACK			1208
 syme1			MACH_SYME1		SYME1			1209
 syhl1			MACH_SYHL1		SYHL1			1210
+empca400		MACH_EMPCA400		EMPCA400		1211
+em7210			MACH_EM7210		EM7210			1212
+htchermes		MACH_HTCHERMES		HTCHERMES		1213
+eti_c1			MACH_ETI_C1		ETI_C1			1214
+mach_dep2410		MACH_MACH_DEP2410	MACH_DEP2410		1215
+ac100			MACH_AC100		AC100			1216
+sneetch			MACH_SNEETCH		SNEETCH			1217
+studentmate		MACH_STUDENTMATE	STUDENTMATE		1218
+zir2410			MACH_ZIR2410		ZIR2410			1219
+zir2413			MACH_ZIR2413		ZIR2413			1220
+dlonip3			MACH_DLONIP3		DLONIP3			1221
+instream		MACH_INSTREAM		INSTREAM		1222
+ambarella		MACH_AMBARELLA		AMBARELLA		1223
+nevis			MACH_NEVIS		NEVIS			1224
+htc_trinity		MACH_HTC_TRINITY	HTC_TRINITY		1225
+ql202b			MACH_QL202B		QL202B			1226
+vpac270			MACH_VPAC270		VPAC270			1227
+rd129			MACH_RD129		RD129			1228
+htcwizard		MACH_HTCWIZARD		HTCWIZARD		1229
+xscale_treo680		MACH_XSCALE_TREO680	XSCALE_TREO680		1230
+tecon_tmezon		MACH_TECON_TMEZON	TECON_TMEZON		1231
+zylonite		MACH_ZYLONITE		ZYLONITE		1233
+gene1270		MACH_GENE1270		GENE1270		1234

arch/arm/vfp/entry.S

@@ -25,6 +25,7 @@
 do_vfp:
 	enable_irq
  	ldr	r4, .LCvfp
+	ldr	r11, [r10, #TI_CPU]	@ CPU number
 	add	r10, r10, #TI_VFPSTATE	@ r10 = workspace
 	ldr	pc, [r4]		@ call VFP entry point
 

arch/arm/vfp/vfp.h

@@ -370,3 +370,7 @@ struct op {
 	u32 (* const fn)(int dd, int dn, int dm, u32 fpscr);
 	u32 flags;
 };
+
+#ifdef CONFIG_SMP
+extern void vfp_save_state(void *location, u32 fpexc);
+#endif

arch/arm/vfp/vfphw.S

@@ -65,6 +65,7 @@
 @  r2  = faulted PC+4
 @  r9  = successful return
 @  r10 = vfp_state union
+@  r11 = CPU number
 @  lr  = failure return
 
 	.globl	vfp_support_entry
@@ -79,7 +80,7 @@ vfp_support_entry:
 	DBGSTR1 "enable %x", r10
 	ldr	r3, last_VFP_context_address
 	orr	r1, r1, #FPEXC_ENABLE	@ user FPEXC has the enable bit set
-	ldr	r4, [r3]		@ last_VFP_context pointer
+	ldr	r4, [r3, r11, lsl #2]	@ last_VFP_context pointer
 	bic	r5, r1, #FPEXC_EXCEPTION @ make sure exceptions are disabled
 	cmp	r4, r10
 	beq	check_for_exception	@ we are returning to the same
@@ -91,7 +92,9 @@ vfp_support_entry:
 					@ exceptions, so we can get at the
 					@ rest of it
 
+#ifndef CONFIG_SMP
 	@ Save out the current registers to the old thread state
+	@ No need for SMP since this is not done lazily
 
 	DBGSTR1	"save old state %p", r4
 	cmp	r4, #0
@@ -105,10 +108,11 @@ vfp_support_entry:
 	stmia	r4, {r1, r5, r6, r8}	@ save FPEXC, FPSCR, FPINST, FPINST2
 					@ and point r4 at the word at the
 					@ start of the register dump
+#endif
 
 no_old_VFP_process:
 	DBGSTR1	"load state %p", r10
-	str	r10, [r3]		@ update the last_VFP_context pointer
+	str	r10, [r3, r11, lsl #2]	@ update the last_VFP_context pointer
 					@ Load the saved state back into the VFP
 	VFPFLDMIA r10	 		@ reload the working registers while
 					@ FPEXC is in a safe state
@@ -162,6 +166,24 @@ process_exception:
 					@ required. If not, the user code will
 					@ retry the faulted instruction
 
+#ifdef CONFIG_SMP
+	.globl	vfp_save_state
+	.type	vfp_save_state, %function
+vfp_save_state:
+	@ Save the current VFP state
+	@ r0 - save location
+	@ r1 - FPEXC
+	DBGSTR1	"save VFP state %p", r0
+	VFPFMRX	r2, FPSCR		@ current status
+	VFPFMRX	r3, FPINST		@ FPINST (always there, rev0 onwards)
+	tst	r1, #FPEXC_FPV2		@ is there an FPINST2 to read?
+	VFPFMRX	r12, FPINST2, NE	@ FPINST2 if needed - avoids reading
+					@ nonexistant reg on rev0
+	VFPFSTMIA r0 			@ save the working registers
+	stmia	r0, {r1, r2, r3, r12}	@ save FPEXC, FPSCR, FPINST, FPINST2
+	mov	pc, lr
+#endif
+
 last_VFP_context_address:
 	.word	last_VFP_context
 

arch/arm/vfp/vfpmodule.c

@@ -28,7 +28,7 @@ void vfp_testing_entry(void);
 void vfp_support_entry(void);
 
 void (*vfp_vector)(void) = vfp_testing_entry;
-union vfp_state *last_VFP_context;
+union vfp_state *last_VFP_context[NR_CPUS];
 
 /*
  * Dual-use variable.
@@ -41,13 +41,35 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
 {
 	struct thread_info *thread = v;
 	union vfp_state *vfp;
+	__u32 cpu = thread->cpu;
 
 	if (likely(cmd == THREAD_NOTIFY_SWITCH)) {
+		u32 fpexc = fmrx(FPEXC);
+
+#ifdef CONFIG_SMP
+		/*
+		 * On SMP, if VFP is enabled, save the old state in
+		 * case the thread migrates to a different CPU. The
+		 * restoring is done lazily.
+		 */
+		if ((fpexc & FPEXC_ENABLE) && last_VFP_context[cpu]) {
+			vfp_save_state(last_VFP_context[cpu], fpexc);
+			last_VFP_context[cpu]->hard.cpu = cpu;
+		}
+		/*
+		 * Thread migration, just force the reloading of the
+		 * state on the new CPU in case the VFP registers
+		 * contain stale data.
+		 */
+		if (thread->vfpstate.hard.cpu != cpu)
+			last_VFP_context[cpu] = NULL;
+#endif
+
 		/*
 		 * Always disable VFP so we can lazily save/restore the
 		 * old state.
 		 */
-		fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
+		fmxr(FPEXC, fpexc & ~FPEXC_ENABLE);
 		return NOTIFY_DONE;
 	}
 
@@ -68,8 +90,8 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
 	}
 
 	/* flush and release case: Per-thread VFP cleanup. */
-	if (last_VFP_context == vfp)
-		last_VFP_context = NULL;
+	if (last_VFP_context[cpu] == vfp)
+		last_VFP_context[cpu] = NULL;
 
 	return NOTIFY_DONE;
 }

arch/avr32/configs/atstk1002_defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.19-rc2
-# Fri Oct 20 11:52:37 2006
+# Linux kernel version: 2.6.20-rc6
+# Fri Jan 26 13:12:59 2007
 #
 CONFIG_AVR32=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -9,6 +9,8 @@ CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_GENERIC_IRQ_PROBE=y
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_GENERIC_TIME=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -36,6 +38,7 @@ CONFIG_TASK_DELAY_ACCT=y
 # CONFIG_UTS_NS is not set
 CONFIG_AUDIT=y
 # CONFIG_IKCONFIG is not set
+CONFIG_SYSFS_DEPRECATED=y
 CONFIG_RELAY=y
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -75,7 +78,9 @@ CONFIG_MODULE_UNLOAD=y
 # Block layer
 #
 CONFIG_BLOCK=y
+# CONFIG_LBD is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
 
 #
 # IO Schedulers
@@ -125,6 +130,7 @@ CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_OWNERSHIP_TRACE is not set
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
 # CONFIG_HZ_1000 is not set
 CONFIG_HZ=250
 CONFIG_CMDLINE=""
@@ -182,6 +188,7 @@ CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
 # CONFIG_INET6_XFRM_TUNNEL is not set
 # CONFIG_INET6_TUNNEL is not set
@@ -260,6 +267,7 @@ CONFIG_MTD_CMDLINE_PARTS=y
 # User Modules And Translation Layers
 #
 CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=y
 CONFIG_MTD_BLOCK=y
 # CONFIG_FTL is not set
 # CONFIG_NFTL is not set
@@ -355,7 +363,6 @@ CONFIG_BLK_DEV_INITRD=y
 #
 # Misc devices
 #
-# CONFIG_SGI_IOC4 is not set
 # CONFIG_TIFM_CORE is not set
 
 #
@@ -405,11 +412,14 @@ CONFIG_TUN=m
 #
 # PHY device support
 #
+# CONFIG_PHYLIB is not set
 
 #
 # Ethernet (10 or 100Mbit)
 #
-# CONFIG_NET_ETHERNET is not set
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+CONFIG_MACB=y
 
 #
 # Ethernet (1000 Mbit)
@@ -505,10 +515,6 @@ CONFIG_UNIX98_PTYS=y
 # CONFIG_GEN_RTC is not set
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
-
-#
-# Ftape, the floppy tape device driver
-#
 # CONFIG_RAW_DRIVER is not set
 
 #
@@ -620,6 +626,10 @@ CONFIG_UNIX98_PTYS=y
 # DMA Devices
 #
 
+#
+# Virtualization
+#
+
 #
 # File systems
 #
@@ -683,7 +693,6 @@ CONFIG_CONFIGFS_FS=m
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
-# CONFIG_JFFS_FS is not set
 CONFIG_JFFS2_FS=y
 CONFIG_JFFS2_FS_DEBUG=0
 CONFIG_JFFS2_FS_WRITEBUFFER=y
@@ -762,6 +771,11 @@ CONFIG_NLS_ISO8859_1=m
 # CONFIG_NLS_KOI8_U is not set
 CONFIG_NLS_UTF8=m
 
+#
+# Distributed Lock Manager
+#
+# CONFIG_DLM is not set
+
 #
 # Kernel hacking
 #
@@ -770,6 +784,8 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
 CONFIG_DEBUG_KERNEL=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_DETECT_SOFTLOCKUP=y
@@ -785,13 +801,10 @@ CONFIG_DETECT_SOFTLOCKUP=y
 # CONFIG_DEBUG_KOBJECT is not set
 CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
-CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 CONFIG_FRAME_POINTER=y
-# CONFIG_UNWIND_INFO is not set
 CONFIG_FORCED_INLINING=y
-# CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 # CONFIG_KPROBES is not set
 
@@ -809,6 +822,7 @@ CONFIG_FORCED_INLINING=y
 #
 # Library routines
 #
+CONFIG_BITREVERSE=y
 CONFIG_CRC_CCITT=m
 # CONFIG_CRC16 is not set
 CONFIG_CRC32=y
@@ -817,3 +831,4 @@ CONFIG_AUDIT_GENERIC=y
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_PLIST=y
+CONFIG_IOMAP_COPY=y

arch/avr32/kernel/avr32_ksyms.c

@@ -29,6 +29,7 @@ EXPORT_SYMBOL(__avr32_asr64);
  */
 EXPORT_SYMBOL(memset);
 EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(clear_page);
 
 /*
  * Userspace access stuff.

arch/cris/arch-v32/kernel/smp.c

@@ -195,7 +195,7 @@ int setup_profiling_timer(unsigned int multiplier)
  */
 unsigned long cache_decay_ticks = 1;
 
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 	smp_boot_one_cpu(cpu);
 	return cpu_online(cpu) ? 0 : -ENOSYS;

arch/i386/defconfig

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.19-git14
-# Sat Dec  9 21:23:14 2006
+# Linux kernel version: 2.6.20-rc3
+# Fri Jan  5 11:54:46 2007
 #
 CONFIG_X86_32=y
 CONFIG_GENERIC_TIME=y
@@ -1286,6 +1286,11 @@ CONFIG_USB_MON=y
 # DMA Devices
 #
 
+#
+# Virtualization
+#
+# CONFIG_KVM is not set
+
 #
 # File systems
 #
@@ -1471,6 +1476,8 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 # CONFIG_ENABLE_MUST_CHECK is not set
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_UNUSED_SYMBOLS=y
+# CONFIG_DEBUG_FS is not set
+# CONFIG_HEADERS_CHECK is not set
 CONFIG_DEBUG_KERNEL=y
 CONFIG_LOG_BUF_SHIFT=18
 CONFIG_DETECT_SOFTLOCKUP=y
@@ -1489,12 +1496,10 @@ CONFIG_DETECT_SOFTLOCKUP=y
 # CONFIG_DEBUG_HIGHMEM is not set
 CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
-# CONFIG_DEBUG_FS is not set
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
 # CONFIG_FORCED_INLINING is not set
-# CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 # CONFIG_LKDTM is not set
 CONFIG_EARLY_PRINTK=y
@@ -1527,6 +1532,7 @@ CONFIG_CRC32=y
 # CONFIG_LIBCRC32C is not set
 CONFIG_ZLIB_INFLATE=y
 CONFIG_PLIST=y
+CONFIG_IOMAP_COPY=y
 CONFIG_GENERIC_HARDIRQS=y
 CONFIG_GENERIC_IRQ_PROBE=y
 CONFIG_GENERIC_PENDING_IRQ=y

arch/i386/kernel/acpi/cstate.c

@@ -47,13 +47,13 @@ EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
 
 /* The code below handles cstate entry with monitor-mwait pair on Intel*/
 
-struct cstate_entry_s {
+struct cstate_entry {
 	struct {
 		unsigned int eax;
 		unsigned int ecx;
 	} states[ACPI_PROCESSOR_MAX_POWER];
 };
-static struct cstate_entry_s *cpu_cstate_entry;	/* per CPU ptr */
+static struct cstate_entry *cpu_cstate_entry;	/* per CPU ptr */
 
 static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
 
@@ -71,7 +71,7 @@ static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
 int acpi_processor_ffh_cstate_probe(unsigned int cpu,
 		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
 {
-	struct cstate_entry_s *percpu_entry;
+	struct cstate_entry *percpu_entry;
 	struct cpuinfo_x86 *c = cpu_data + cpu;
 
 	cpumask_t saved_mask;
@@ -136,7 +136,7 @@ EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
 void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
 {
 	unsigned int cpu = smp_processor_id();
-	struct cstate_entry_s *percpu_entry;
+	struct cstate_entry *percpu_entry;
 
 	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
 	mwait_idle_with_hints(percpu_entry->states[cx->index].eax,
@@ -150,7 +150,7 @@ static int __init ffh_cstate_init(void)
 	if (c->x86_vendor != X86_VENDOR_INTEL)
 		return -1;
 
-	cpu_cstate_entry = alloc_percpu(struct cstate_entry_s);
+	cpu_cstate_entry = alloc_percpu(struct cstate_entry);
 	return 0;
 }
 

arch/i386/kernel/cpu/common.c

@@ -710,11 +710,8 @@ __cpuinit int init_gdt(int cpu, struct task_struct *idle)
 	return 1;
 }
 
-/* Common CPU init for both boot and secondary CPUs */
-static void __cpuinit _cpu_init(int cpu, struct task_struct *curr)
+void __cpuinit cpu_set_gdt(int cpu)
 {
-	struct tss_struct * t = &per_cpu(init_tss, cpu);
-	struct thread_struct *thread = &curr->thread;
 	struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
 
 	/* Reinit these anyway, even if they've already been done (on
@@ -722,6 +719,13 @@ static void __cpuinit _cpu_init(int cpu, struct task_struct *curr)
 	   the real ones). */
 	load_gdt(cpu_gdt_descr);
 	set_kernel_gs();
+}
+
+/* Common CPU init for both boot and secondary CPUs */
+static void __cpuinit _cpu_init(int cpu, struct task_struct *curr)
+{
+	struct tss_struct * t = &per_cpu(init_tss, cpu);
+	struct thread_struct *thread = &curr->thread;
 
 	if (cpu_test_and_set(cpu, cpu_initialized)) {
 		printk(KERN_WARNING "CPU#%d already initialized!\n", cpu);
@@ -807,6 +811,7 @@ void __cpuinit cpu_init(void)
 			local_irq_enable();
 	}
 
+	cpu_set_gdt(cpu);
 	_cpu_init(cpu, curr);
 }
 

arch/i386/kernel/cpu/cpufreq/p4-clockmod.c

@@ -51,7 +51,6 @@ enum {
 
 
 static int has_N44_O17_errata[NR_CPUS];
-static int has_N60_errata[NR_CPUS];
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -224,12 +223,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
 	case 0x0f12:
 		has_N44_O17_errata[policy->cpu] = 1;
 		dprintk("has errata -- disabling low frequencies\n");
-		break;
-
-	case 0x0f29:
-		has_N60_errata[policy->cpu] = 1;
-		dprintk("has errata -- disabling frequencies lower than 2ghz\n");
-		break;
 	}
 
 	/* get max frequency */
@@ -241,8 +234,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
 	for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
 		if ((i<2) && (has_N44_O17_errata[policy->cpu]))
 			p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
-		else if (has_N60_errata[policy->cpu] && ((stock_freq * i)/8) < 2000000)
-			p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
 		else
 			p4clockmod_table[i].frequency = (stock_freq * i)/8;
 	}

arch/i386/kernel/cpu/cyrix.c

@@ -173,7 +173,7 @@ static void __cpuinit geode_configure(void)
 	ccr4 = getCx86(CX86_CCR4);
 	ccr4 |= 0x38;		/* FPU fast, DTE cache, Mem bypass */
 	
-	setCx86(CX86_CCR3, ccr3);
+	setCx86(CX86_CCR4, ccr4);
 	
 	set_cx86_memwb();
 	set_cx86_reorder();	

arch/i386/kernel/entry.S

@@ -302,12 +302,16 @@ sysenter_past_esp:
 	pushl $(__USER_CS)
 	CFI_ADJUST_CFA_OFFSET 4
 	/*CFI_REL_OFFSET cs, 0*/
+#ifndef CONFIG_COMPAT_VDSO
 	/*
 	 * Push current_thread_info()->sysenter_return to the stack.
 	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
 	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
 	 */
 	pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
+#else
+	pushl $SYSENTER_RETURN
+#endif
 	CFI_ADJUST_CFA_OFFSET 4
 	CFI_REL_OFFSET eip, 0
 

arch/i386/kernel/io_apic.c

@@ -1227,26 +1227,32 @@ static u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 }
 
 static int __assign_irq_vector(int irq)
 {
-	static int current_vector = FIRST_DEVICE_VECTOR, offset = 0;
-	int vector;
+	static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
+	int vector, offset, i;
 
 	BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
 
 	if (irq_vector[irq] > 0)
 		return irq_vector[irq];
 
-	current_vector += 8;
-	if (current_vector == SYSCALL_VECTOR)
-		current_vector += 8;
-
-	if (current_vector >= FIRST_SYSTEM_VECTOR) {
-		offset++;
-		if (!(offset % 8))
-			return -ENOSPC;
-		current_vector = FIRST_DEVICE_VECTOR + offset;
-	}
-
 	vector = current_vector;
+	offset = current_offset;
+next:
+	vector += 8;
+	if (vector >= FIRST_SYSTEM_VECTOR) {
+		offset = (offset + 1) % 8;
+		vector = FIRST_DEVICE_VECTOR + offset;
+	}
+	if (vector == current_vector)
+		return -ENOSPC;
+	if (vector == SYSCALL_VECTOR)
+		goto next;
+	for (i = 0; i < NR_IRQ_VECTORS; i++)
+		if (irq_vector[i] == vector)
+			goto next;
+
+	current_vector = vector;
+	current_offset = offset;
 	irq_vector[irq] = vector;
 
 	return vector;

arch/i386/kernel/mpparse.c

@@ -36,7 +36,7 @@
 
 /* Have we found an MP table */
 int smp_found_config;
-unsigned int __initdata maxcpus = NR_CPUS;
+unsigned int __cpuinitdata maxcpus = NR_CPUS;
 
 /*
  * Various Linux-internal data structures created from the
@@ -102,9 +102,9 @@ static int __init mpf_checksum(unsigned char *mp, int len)
  */
 
 static int mpc_record; 
-static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __initdata;
+static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __cpuinitdata;
 
-static void __devinit MP_processor_info (struct mpc_config_processor *m)
+static void __cpuinit MP_processor_info (struct mpc_config_processor *m)
 {
  	int ver, apicid;
 	physid_mask_t phys_cpu;
@@ -822,7 +822,7 @@ void __init mp_register_lapic_address(u64 address)
 	Dprintk("Boot CPU = %d\n", boot_cpu_physical_apicid);
 }
 
-void __devinit mp_register_lapic (u8 id, u8 enabled)
+void __cpuinit mp_register_lapic (u8 id, u8 enabled)
 {
 	struct mpc_config_processor processor;
 	int boot_cpu = 0;

arch/i386/kernel/nmi.c

@@ -310,13 +310,7 @@ static int __init setup_nmi_watchdog(char *str)
 
 	if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE))
 		return 0;
-	/*
-	 * If any other x86 CPU has a local APIC, then
-	 * please test the NMI stuff there and send me the
-	 * missing bits. Right now Intel P6/P4 and AMD K7 only.
-	 */
-	if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0))
-		return 0;  /* no lapic support */
+
 	nmi_watchdog = nmi;
 	return 1;
 }

arch/i386/kernel/paravirt.c

@@ -566,4 +566,11 @@ struct paravirt_ops paravirt_ops = {
 	.irq_enable_sysexit = native_irq_enable_sysexit,
 	.iret = native_iret,
 };
-EXPORT_SYMBOL(paravirt_ops);
+
+/*
+ * NOTE: CONFIG_PARAVIRT is experimental and the paravirt_ops
+ * semantics are subject to change. Hence we only do this
+ * internal-only export of this, until it gets sorted out and
+ * all lowlevel CPU ops used by modules are separately exported.
+ */
+EXPORT_SYMBOL_GPL(paravirt_ops);

arch/i386/kernel/setup.c

@@ -77,7 +77,7 @@ extern struct resource code_resource;
 extern struct resource data_resource;
 
 /* cpu data as detected by the assembly code in head.S */
-struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
+struct cpuinfo_x86 new_cpu_data __cpuinitdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
 /* common cpu data for all cpus */
 struct cpuinfo_x86 boot_cpu_data __read_mostly = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
 EXPORT_SYMBOL(boot_cpu_data);
@@ -495,7 +495,7 @@ static void set_mca_bus(int x) { }
 #endif
 
 /* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __attribute__((weak)) memory_setup(void)
+char * __init __attribute__((weak)) memory_setup(void)
 {
 	return machine_specific_memory_setup();
 }

arch/i386/kernel/smpboot.c

@@ -159,7 +159,7 @@ void __init smp_alloc_memory(void)
  * a given CPU
  */
 
-static void __devinit smp_store_cpu_info(int id)
+static void __cpuinit smp_store_cpu_info(int id)
 {
 	struct cpuinfo_x86 *c = cpu_data + id;
 
@@ -364,7 +364,7 @@ extern void calibrate_delay(void);
 
 static atomic_t init_deasserted;
 
-static void __devinit smp_callin(void)
+static void __cpuinit smp_callin(void)
 {
 	int cpuid, phys_id;
 	unsigned long timeout;
@@ -538,7 +538,7 @@ set_cpu_sibling_map(int cpu)
 /*
  * Activate a secondary processor.
  */
-static void __devinit start_secondary(void *unused)
+static void __cpuinit start_secondary(void *unused)
 {
 	/*
 	 * Don't put *anything* before secondary_cpu_init(), SMP
@@ -595,6 +595,12 @@ static void __devinit start_secondary(void *unused)
  */
 void __devinit initialize_secondary(void)
 {
+	/*
+	 * switch to the per CPU GDT we already set up
+	 * in do_boot_cpu()
+	 */
+	cpu_set_gdt(current_thread_info()->cpu);
+
 	/*
 	 * We don't actually need to load the full TSS,
 	 * basically just the stack pointer and the eip.
@@ -931,7 +937,7 @@ static inline struct task_struct * alloc_idle_task(int cpu)
 #define alloc_idle_task(cpu) fork_idle(cpu)
 #endif
 
-static int __devinit do_boot_cpu(int apicid, int cpu)
+static int __cpuinit do_boot_cpu(int apicid, int cpu)
 /*
  * NOTE - on most systems this is a PHYSICAL apic ID, but on multiquad
  * (ie clustered apic addressing mode), this is a LOGICAL apic ID.
@@ -972,9 +978,6 @@ static int __devinit do_boot_cpu(int apicid, int cpu)
 	/* Stack for startup_32 can be just as for start_secondary onwards */
 	stack_start.esp = (void *) idle->thread.esp;
 
-	start_pda = cpu_pda(cpu);
-	cpu_gdt_descr = per_cpu(cpu_gdt_descr, cpu);
-
 	irq_ctx_init(cpu);
 
 	x86_cpu_to_apicid[cpu] = apicid;
@@ -1432,7 +1435,7 @@ void __cpu_die(unsigned int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 #ifdef CONFIG_HOTPLUG_CPU
 	int ret=0;

arch/i386/kernel/sysenter.c

@@ -79,11 +79,6 @@ int __init sysenter_setup(void)
 #ifdef CONFIG_COMPAT_VDSO
 	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_READONLY);
 	printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO));
-#else
-	/*
-	 * In the non-compat case the ELF coredumping code needs the fixmap:
-	 */
-	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_KERNEL_RO);
 #endif
 
 	if (!boot_cpu_has(X86_FEATURE_SEP)) {
@@ -100,6 +95,7 @@ int __init sysenter_setup(void)
 	return 0;
 }
 
+#ifndef CONFIG_COMPAT_VDSO
 static struct page *syscall_nopage(struct vm_area_struct *vma,
 				unsigned long adr, int *type)
 {
@@ -146,6 +142,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
 	vma->vm_end = addr + PAGE_SIZE;
 	/* MAYWRITE to allow gdb to COW and set breakpoints */
 	vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+	/*
+	 * Make sure the vDSO gets into every core dump.
+	 * Dumping its contents makes post-mortem fully interpretable later
+	 * without matching up the same kernel and hardware config to see
+	 * what PC values meant.
+	 */
+	vma->vm_flags |= VM_ALWAYSDUMP;
 	vma->vm_flags |= mm->def_flags;
 	vma->vm_page_prot = protection_map[vma->vm_flags & 7];
 	vma->vm_ops = &syscall_vm_ops;
@@ -187,3 +190,4 @@ int in_gate_area_no_task(unsigned long addr)
 {
 	return 0;
 }
+#endif

arch/i386/kernel/tsc.c

@@ -24,7 +24,7 @@
  */
 unsigned int tsc_khz;
 
-int tsc_disable __cpuinitdata = 0;
+int tsc_disable;
 
 #ifdef CONFIG_X86_TSC
 static int __init tsc_setup(char *str)

arch/i386/mach-generic/bigsmp.c

@@ -45,7 +45,7 @@ static struct dmi_system_id __initdata bigsmp_dmi_table[] = {
 };
 
 
-static __init int probe_bigsmp(void)
+static int probe_bigsmp(void)
 { 
 	if (def_to_bigsmp)
         	dmi_bigsmp = 1;

arch/i386/mach-generic/default.c

@@ -18,7 +18,7 @@
 #include <asm/mach-default/mach_mpparse.h>
 
 /* should be called last. */
-static __init int probe_default(void)
+static int probe_default(void)
 { 
 	return 1;
 } 

arch/i386/mach-generic/es7000.c

@@ -19,7 +19,7 @@
 #include <asm/mach-es7000/mach_mpparse.h>
 #include <asm/mach-es7000/mach_wakecpu.h>
 
-static __init int probe_es7000(void)
+static int probe_es7000(void)
 {
 	/* probed later in mptable/ACPI hooks */
 	return 0;

arch/i386/mach-generic/summit.c

@@ -18,7 +18,7 @@
 #include <asm/mach-summit/mach_ipi.h>
 #include <asm/mach-summit/mach_mpparse.h>
 
-static __init int probe_summit(void)
+static int probe_summit(void)
 { 
 	/* probed later in mptable/ACPI hooks */
 	return 0;

arch/i386/mach-voyager/voyager_smp.c

@@ -772,6 +772,12 @@ initialize_secondary(void)
 	set_current(hard_get_current());
 #endif
 
+	/*
+	 * switch to the per CPU GDT we already set up
+	 * in do_boot_cpu()
+	 */
+	cpu_set_gdt(current_thread_info()->cpu);
+
 	/*
 	 * We don't actually need to load the full TSS,
 	 * basically just the stack pointer and the eip.

arch/i386/mm/init.c

@@ -283,7 +283,7 @@ void __init add_one_highpage_init(struct page *page, int pfn, int bad_ppro)
 		SetPageReserved(page);
 }
 
-static int add_one_highpage_hotplug(struct page *page, unsigned long pfn)
+static int __meminit add_one_highpage_hotplug(struct page *page, unsigned long pfn)
 {
 	free_new_highpage(page);
 	totalram_pages++;
@@ -300,7 +300,7 @@ static int add_one_highpage_hotplug(struct page *page, unsigned long pfn)
  * has been added dynamically that would be
  * onlined here is in HIGHMEM
  */
-void online_page(struct page *page)
+void __meminit online_page(struct page *page)
 {
 	ClearPageReserved(page);
 	add_one_highpage_hotplug(page, page_to_pfn(page));

arch/ia64/kernel/acpi.c

@@ -590,6 +590,9 @@ void __init acpi_numa_arch_fixup(void)
  */
 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
 {
+	if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+		return gsi;
+
 	if (has_8259 && gsi < 16)
 		return isa_irq_to_vector(gsi);
 

arch/ia64/mm/init.c

@@ -543,7 +543,8 @@ virtual_memmap_init (u64 start, u64 end, void *arg)
 
 	if (map_start < map_end)
 		memmap_init_zone((unsigned long)(map_end - map_start),
-				 args->nid, args->zone, page_to_pfn(map_start));
+				 args->nid, args->zone, page_to_pfn(map_start),
+				 MEMMAP_EARLY);
 	return 0;
 }
 
@@ -552,7 +553,7 @@ memmap_init (unsigned long size, int nid, unsigned long zone,
 	     unsigned long start_pfn)
 {
 	if (!vmem_map)
-		memmap_init_zone(size, nid, zone, start_pfn);
+		memmap_init_zone(size, nid, zone, start_pfn, MEMMAP_EARLY);
 	else {
 		struct page *start;
 		struct memmap_init_callback_data args;

arch/ia64/sn/kernel/io_acpi_init.c

@@ -223,6 +223,9 @@ sn_io_acpi_init(void)
 	u64 result;
 	s64 status;
 
+	/* SN Altix does not follow the IOSAPIC IRQ routing model */
+	acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
+
 	acpi_bus_register_driver(&acpi_sn_hubdev_driver);
 	status = sal_ioif_init(&result);
 	if (status || result)

arch/m32r/kernel/smpboot.c

@@ -351,7 +351,7 @@ static void __init do_boot_cpu(int phys_id)
 	}
 }
 
-int __devinit __cpu_up(unsigned int cpu_id)
+int __cpuinit __cpu_up(unsigned int cpu_id)
 {
 	int timeout;
 

arch/mips/Kconfig

@@ -1568,6 +1568,20 @@ config MIPS_MT_FPAFF
 	depends on MIPS_MT
 	default y
 
+config MIPS_MT_SMTC_INSTANT_REPLAY
+	bool "Low-latency Dispatch of Deferred SMTC IPIs"
+	depends on MIPS_MT_SMTC
+	default y
+	help
+	  SMTC pseudo-interrupts between TCs are deferred and queued
+	  if the target TC is interrupt-inhibited (IXMT). In the first
+	  SMTC prototypes, these queued IPIs were serviced on return
+	  to user mode, or on entry into the kernel idle loop. The
+	  INSTANT_REPLAY option dispatches them as part of local_irq_restore()
+	  processing, which adds runtime overhead (hence the option to turn
+	  it off), but ensures that IPIs are handled promptly even under
+	  heavy I/O interrupt load.
+
 config MIPS_VPE_LOADER_TOM
 	bool "Load VPE program into memory hidden from linux"
 	depends on MIPS_VPE_LOADER

arch/mips/Makefile

@@ -623,7 +623,7 @@ LDFLAGS			+= -m $(ld-emul)
 
 ifdef CONFIG_MIPS
 CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \
-	egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \
+	egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
 	sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
 ifdef CONFIG_64BIT
 CHECKFLAGS		+= -m64

arch/mips/au1000/common/pci.c

@@ -39,15 +39,15 @@
 
 /* TBD */
 static struct resource pci_io_resource = {
-	.start	= PCI_IO_START,
-	.end	= PCI_IO_END,
+	.start	= (resource_size_t)PCI_IO_START,
+	.end	= (resource_size_t)PCI_IO_END,
 	.name	= "PCI IO space",
 	.flags	= IORESOURCE_IO
 };
 
 static struct resource pci_mem_resource = {
-	.start	= PCI_MEM_START,
-	.end	= PCI_MEM_END,
+	.start	= (resource_size_t)PCI_MEM_START,
+	.end	= (resource_size_t)PCI_MEM_END,
 	.name	= "PCI memory space",
 	.flags	= IORESOURCE_MEM
 };

arch/mips/dec/prom/memory.c

@@ -122,7 +122,7 @@ unsigned long __init prom_free_prom_memory(void)
 		addr += PAGE_SIZE;
 	}
 
-	printk("Freeing unused PROM memory: %ldk freed\n",
+	printk("Freeing unused PROM memory: %ldkb freed\n",
 	       (end - PAGE_SIZE) >> 10);
 
 	return end - PAGE_SIZE;

arch/mips/kernel/linux32.c

@@ -440,14 +440,26 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
 }
 
 #ifdef CONFIG_MIPS32_N32
-asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg)
+asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, u32 arg)
 {
 	/* compat_sys_semctl expects a pointer to union semun */
 	u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
-	if (put_user(ptr_to_compat(arg.__pad), uptr))
+	if (put_user(arg, uptr))
 		return -EFAULT;
 	return compat_sys_semctl(semid, semnum, cmd, uptr);
 }
+
+asmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg)
+{
+	return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
+}
+
+asmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp,
+			      int msgflg)
+{
+	return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
+				 compat_ptr(msgp));
+}
 #endif
 
 struct sysctl_args32

arch/mips/kernel/mips_ksyms.c

@@ -46,5 +46,7 @@ EXPORT_SYMBOL(__strnlen_user_nocheck_asm);
 EXPORT_SYMBOL(__strnlen_user_asm);
 
 EXPORT_SYMBOL(csum_partial);
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
+EXPORT_SYMBOL(__csum_partial_copy_user);
 
 EXPORT_SYMBOL(invalid_pte_table);

arch/mips/kernel/scall64-n32.S

@@ -187,8 +187,8 @@ EXPORT(sysn32_call_table)
 	PTR	sysn32_semctl
 	PTR	sys_shmdt			/* 6065 */
 	PTR	sys_msgget
-	PTR	compat_sys_msgsnd
-	PTR	compat_sys_msgrcv
+	PTR	sysn32_msgsnd
+	PTR	sysn32_msgrcv
 	PTR	compat_sys_msgctl
 	PTR	compat_sys_fcntl		/* 6070 */
 	PTR	sys_flock

arch/mips/kernel/smp.c

@@ -271,7 +271,7 @@ void __devinit smp_prepare_boot_cpu(void)
  * and keep control until "cpu_online(cpu)" is set.  Note: cpu is
  * physical, not logical.
  */
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 	struct task_struct *idle;
 

arch/mips/kernel/smtc.c

@@ -4,6 +4,7 @@
 #include <linux/sched.h>
 #include <linux/cpumask.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
 
 #include <asm/cpu.h>
 #include <asm/processor.h>
@@ -261,6 +262,7 @@ void smtc_configure_tlb(void)
 		    }
 		}
 		write_c0_mvpcontrol(read_c0_mvpcontrol() | MVPCONTROL_STLB);
+		ehb();
 
 		/*
 		 * Setup kernel data structures to use software total,
@@ -269,9 +271,12 @@ void smtc_configure_tlb(void)
 		 * of their initialization in smtc_cpu_setup().
 		 */
 
-		tlbsiz = tlbsiz & 0x3f;	/* MIPS32 limits TLB indices to 64 */
-		cpu_data[0].tlbsize = tlbsiz;
+		/* MIPS32 limits TLB indices to 64 */
+		if (tlbsiz > 64)
+			tlbsiz = 64;
+		cpu_data[0].tlbsize = current_cpu_data.tlbsize = tlbsiz;
 		smtc_status |= SMTC_TLB_SHARED;
+		local_flush_tlb_all();
 
 		printk("TLB of %d entry pairs shared by %d VPEs\n",
 			tlbsiz, vpes);
@@ -1016,6 +1021,35 @@ void setup_cross_vpe_interrupts(void)
  * SMTC-specific hacks invoked from elsewhere in the kernel.
  */
 
+void smtc_ipi_replay(void)
+{
+	/*
+	 * To the extent that we've ever turned interrupts off,
+	 * we may have accumulated deferred IPIs.  This is subtle.
+	 * If we use the smtc_ipi_qdepth() macro, we'll get an
+	 * exact number - but we'll also disable interrupts
+	 * and create a window of failure where a new IPI gets
+	 * queued after we test the depth but before we re-enable
+	 * interrupts. So long as IXMT never gets set, however,
+	 * we should be OK:  If we pick up something and dispatch
+	 * it here, that's great. If we see nothing, but concurrent
+	 * with this operation, another TC sends us an IPI, IXMT
+	 * is clear, and we'll handle it as a real pseudo-interrupt
+	 * and not a pseudo-pseudo interrupt.
+	 */
+	if (IPIQ[smp_processor_id()].depth > 0) {
+		struct smtc_ipi *pipi;
+		extern void self_ipi(struct smtc_ipi *);
+
+		while ((pipi = smtc_ipi_dq(&IPIQ[smp_processor_id()]))) {
+			self_ipi(pipi);
+			smtc_cpu_stats[smp_processor_id()].selfipis++;
+		}
+	}
+}
+
+EXPORT_SYMBOL(smtc_ipi_replay);
+
 void smtc_idle_loop_hook(void)
 {
 #ifdef SMTC_IDLE_HOOK_DEBUG
@@ -1112,29 +1146,14 @@ void smtc_idle_loop_hook(void)
 	if (pdb_msg != &id_ho_db_msg[0])
 		printk("CPU%d: %s", smp_processor_id(), id_ho_db_msg);
 #endif /* SMTC_IDLE_HOOK_DEBUG */
-	/*
-	 * To the extent that we've ever turned interrupts off,
-	 * we may have accumulated deferred IPIs.  This is subtle.
-	 * If we use the smtc_ipi_qdepth() macro, we'll get an
-	 * exact number - but we'll also disable interrupts
-	 * and create a window of failure where a new IPI gets
-	 * queued after we test the depth but before we re-enable
-	 * interrupts. So long as IXMT never gets set, however,
-	 * we should be OK:  If we pick up something and dispatch
-	 * it here, that's great. If we see nothing, but concurrent
-	 * with this operation, another TC sends us an IPI, IXMT
-	 * is clear, and we'll handle it as a real pseudo-interrupt
-	 * and not a pseudo-pseudo interrupt.
-	 */
-	if (IPIQ[smp_processor_id()].depth > 0) {
-		struct smtc_ipi *pipi;
-		extern void self_ipi(struct smtc_ipi *);
 
-		if ((pipi = smtc_ipi_dq(&IPIQ[smp_processor_id()])) != NULL) {
-			self_ipi(pipi);
-			smtc_cpu_stats[smp_processor_id()].selfipis++;
-		}
-	}
+	/*
+	 * Replay any accumulated deferred IPIs. If "Instant Replay"
+	 * is in use, there should never be any.
+	 */
+#ifndef CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY
+	smtc_ipi_replay();
+#endif /* CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY */
 }
 
 void smtc_soft_dump(void)

arch/mips/kernel/time.c

@@ -94,10 +94,8 @@ static void c0_timer_ack(void)
 {
 	unsigned int count;
 
-#ifndef CONFIG_SOC_PNX8550	/* pnx8550 resets to zero */
 	/* Ack this timer interrupt and set the next one.  */
 	expirelo += cycles_per_jiffy;
-#endif
 	write_c0_compare(expirelo);
 
 	/* Check to see if we have missed any timer interrupts.  */

arch/mips/kernel/vpe.c

@@ -139,13 +139,16 @@ struct tc {
 	struct list_head list;
 };
 
-struct vpecontrol_ {
+struct {
 	/* Virtual processing elements */
 	struct list_head vpe_list;
 
 	/* Thread contexts */
 	struct list_head tc_list;
-} vpecontrol;
+} vpecontrol = {
+	.vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list),
+	.tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
+};
 
 static void release_progmem(void *ptr);
 /* static __attribute_used__ void dump_vpe(struct vpe * v); */
@@ -1388,8 +1391,6 @@ static int __init vpe_module_init(void)
 
 	/* dump_mtregs(); */
 
-	INIT_LIST_HEAD(&vpecontrol.vpe_list);
-	INIT_LIST_HEAD(&vpecontrol.tc_list);
 
 	val = read_c0_mvpconf0();
 	for (i = 0; i < ((val & MVPCONF0_PTC) + 1); i++) {

arch/mips/lib/Makefile

@@ -2,7 +2,7 @@
 # Makefile for MIPS-specific library files..
 #
 
-lib-y	+= csum_partial.o csum_partial_copy.o memcpy.o promlib.o \
+lib-y	+= csum_partial.o memcpy.o promlib.o \
 	   strlen_user.o strncpy_user.o strnlen_user.o uncached.o
 
 obj-y	+= iomap.o

arch/mips/lib/csum_partial.S

@@ -8,7 +8,9 @@
  * Copyright (C) 1998, 1999 Ralf Baechle
  * Copyright (C) 1999 Silicon Graphics, Inc.
  */
+#include <linux/errno.h>
 #include <asm/asm.h>
+#include <asm/asm-offsets.h>
 #include <asm/regdef.h>
 
 #ifdef CONFIG_64BIT
@@ -271,3 +273,443 @@ small_csumcpy:
 	jr	ra
 	.set	noreorder
 	END(csum_partial)
+
+
+/*
+ * checksum and copy routines based on memcpy.S
+ *
+ *	csum_partial_copy_nocheck(src, dst, len, sum)
+ *	__csum_partial_copy_user(src, dst, len, sum, errp)
+ *
+ * See "Spec" in memcpy.S for details.  Unlike __copy_user, all
+ * function in this file use the standard calling convention.
+ */
+
+#define src a0
+#define dst a1
+#define len a2
+#define psum a3
+#define sum v0
+#define odd t8
+#define errptr t9
+
+/*
+ * The exception handler for loads requires that:
+ *  1- AT contain the address of the byte just past the end of the source
+ *     of the copy,
+ *  2- src_entry <= src < AT, and
+ *  3- (dst - src) == (dst_entry - src_entry),
+ * The _entry suffix denotes values when __copy_user was called.
+ *
+ * (1) is set up up by __csum_partial_copy_from_user and maintained by
+ *	not writing AT in __csum_partial_copy
+ * (2) is met by incrementing src by the number of bytes copied
+ * (3) is met by not doing loads between a pair of increments of dst and src
+ *
+ * The exception handlers for stores stores -EFAULT to errptr and return.
+ * These handlers do not need to overwrite any data.
+ */
+
+#define EXC(inst_reg,addr,handler)		\
+9:	inst_reg, addr;				\
+	.section __ex_table,"a";		\
+	PTR	9b, handler;			\
+	.previous
+
+#ifdef USE_DOUBLE
+
+#define LOAD   ld
+#define LOADL  ldl
+#define LOADR  ldr
+#define STOREL sdl
+#define STORER sdr
+#define STORE  sd
+#define ADD    daddu
+#define SUB    dsubu
+#define SRL    dsrl
+#define SLL    dsll
+#define SLLV   dsllv
+#define SRLV   dsrlv
+#define NBYTES 8
+#define LOG_NBYTES 3
+
+#else
+
+#define LOAD   lw
+#define LOADL  lwl
+#define LOADR  lwr
+#define STOREL swl
+#define STORER swr
+#define STORE  sw
+#define ADD    addu
+#define SUB    subu
+#define SRL    srl
+#define SLL    sll
+#define SLLV   sllv
+#define SRLV   srlv
+#define NBYTES 4
+#define LOG_NBYTES 2
+
+#endif /* USE_DOUBLE */
+
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define LDFIRST LOADR
+#define LDREST  LOADL
+#define STFIRST STORER
+#define STREST  STOREL
+#define SHIFT_DISCARD SLLV
+#define SHIFT_DISCARD_REVERT SRLV
+#else
+#define LDFIRST LOADL
+#define LDREST  LOADR
+#define STFIRST STOREL
+#define STREST  STORER
+#define SHIFT_DISCARD SRLV
+#define SHIFT_DISCARD_REVERT SLLV
+#endif
+
+#define FIRST(unit) ((unit)*NBYTES)
+#define REST(unit)  (FIRST(unit)+NBYTES-1)
+
+#define ADDRMASK (NBYTES-1)
+
+	.set	noat
+
+LEAF(__csum_partial_copy_user)
+	PTR_ADDU	AT, src, len	/* See (1) above. */
+#ifdef CONFIG_64BIT
+	move	errptr, a4
+#else
+	lw	errptr, 16(sp)
+#endif
+FEXPORT(csum_partial_copy_nocheck)
+	move	sum, zero
+	move	odd, zero
+	/*
+	 * Note: dst & src may be unaligned, len may be 0
+	 * Temps
+	 */
+	/*
+	 * The "issue break"s below are very approximate.
+	 * Issue delays for dcache fills will perturb the schedule, as will
+	 * load queue full replay traps, etc.
+	 *
+	 * If len < NBYTES use byte operations.
+	 */
+	sltu	t2, len, NBYTES
+	and	t1, dst, ADDRMASK
+	bnez	t2, copy_bytes_checklen
+	 and	t0, src, ADDRMASK
+	andi	odd, dst, 0x1			/* odd buffer? */
+	bnez	t1, dst_unaligned
+	 nop
+	bnez	t0, src_unaligned_dst_aligned
+	/*
+	 * use delay slot for fall-through
+	 * src and dst are aligned; need to compute rem
+	 */
+both_aligned:
+	 SRL	t0, len, LOG_NBYTES+3    # +3 for 8 units/iter
+	beqz	t0, cleanup_both_aligned # len < 8*NBYTES
+	 nop
+	SUB	len, 8*NBYTES		# subtract here for bgez loop
+	.align	4
+1:
+EXC(	LOAD	t0, UNIT(0)(src),	l_exc)
+EXC(	LOAD	t1, UNIT(1)(src),	l_exc_copy)
+EXC(	LOAD	t2, UNIT(2)(src),	l_exc_copy)
+EXC(	LOAD	t3, UNIT(3)(src),	l_exc_copy)
+EXC(	LOAD	t4, UNIT(4)(src),	l_exc_copy)
+EXC(	LOAD	t5, UNIT(5)(src),	l_exc_copy)
+EXC(	LOAD	t6, UNIT(6)(src),	l_exc_copy)
+EXC(	LOAD	t7, UNIT(7)(src),	l_exc_copy)
+	SUB	len, len, 8*NBYTES
+	ADD	src, src, 8*NBYTES
+EXC(	STORE	t0, UNIT(0)(dst),	s_exc)
+	ADDC(sum, t0)
+EXC(	STORE	t1, UNIT(1)(dst),	s_exc)
+	ADDC(sum, t1)
+EXC(	STORE	t2, UNIT(2)(dst),	s_exc)
+	ADDC(sum, t2)
+EXC(	STORE	t3, UNIT(3)(dst),	s_exc)
+	ADDC(sum, t3)
+EXC(	STORE	t4, UNIT(4)(dst),	s_exc)
+	ADDC(sum, t4)
+EXC(	STORE	t5, UNIT(5)(dst),	s_exc)
+	ADDC(sum, t5)
+EXC(	STORE	t6, UNIT(6)(dst),	s_exc)
+	ADDC(sum, t6)
+EXC(	STORE	t7, UNIT(7)(dst),	s_exc)
+	ADDC(sum, t7)
+	bgez	len, 1b
+	 ADD	dst, dst, 8*NBYTES
+	ADD	len, 8*NBYTES		# revert len (see above)
+
+	/*
+	 * len == the number of bytes left to copy < 8*NBYTES
+	 */
+cleanup_both_aligned:
+#define rem t7
+	beqz	len, done
+	 sltu	t0, len, 4*NBYTES
+	bnez	t0, less_than_4units
+	 and	rem, len, (NBYTES-1)	# rem = len % NBYTES
+	/*
+	 * len >= 4*NBYTES
+	 */
+EXC(	LOAD	t0, UNIT(0)(src),	l_exc)
+EXC(	LOAD	t1, UNIT(1)(src),	l_exc_copy)
+EXC(	LOAD	t2, UNIT(2)(src),	l_exc_copy)
+EXC(	LOAD	t3, UNIT(3)(src),	l_exc_copy)
+	SUB	len, len, 4*NBYTES
+	ADD	src, src, 4*NBYTES
+EXC(	STORE	t0, UNIT(0)(dst),	s_exc)
+	ADDC(sum, t0)
+EXC(	STORE	t1, UNIT(1)(dst),	s_exc)
+	ADDC(sum, t1)
+EXC(	STORE	t2, UNIT(2)(dst),	s_exc)
+	ADDC(sum, t2)
+EXC(	STORE	t3, UNIT(3)(dst),	s_exc)
+	ADDC(sum, t3)
+	beqz	len, done
+	 ADD	dst, dst, 4*NBYTES
+less_than_4units:
+	/*
+	 * rem = len % NBYTES
+	 */
+	beq	rem, len, copy_bytes
+	 nop
+1:
+EXC(	LOAD	t0, 0(src),		l_exc)
+	ADD	src, src, NBYTES
+	SUB	len, len, NBYTES
+EXC(	STORE	t0, 0(dst),		s_exc)
+	ADDC(sum, t0)
+	bne	rem, len, 1b
+	 ADD	dst, dst, NBYTES
+
+	/*
+	 * src and dst are aligned, need to copy rem bytes (rem < NBYTES)
+	 * A loop would do only a byte at a time with possible branch
+	 * mispredicts.  Can't do an explicit LOAD dst,mask,or,STORE
+	 * because can't assume read-access to dst.  Instead, use
+	 * STREST dst, which doesn't require read access to dst.
+	 *
+	 * This code should perform better than a simple loop on modern,
+	 * wide-issue mips processors because the code has fewer branches and
+	 * more instruction-level parallelism.
+	 */
+#define bits t2
+	beqz	len, done
+	 ADD	t1, dst, len	# t1 is just past last byte of dst
+	li	bits, 8*NBYTES
+	SLL	rem, len, 3	# rem = number of bits to keep
+EXC(	LOAD	t0, 0(src),		l_exc)
+	SUB	bits, bits, rem	# bits = number of bits to discard
+	SHIFT_DISCARD t0, t0, bits
+EXC(	STREST	t0, -1(t1),		s_exc)
+	SHIFT_DISCARD_REVERT t0, t0, bits
+	.set reorder
+	ADDC(sum, t0)
+	b	done
+	.set noreorder
+dst_unaligned:
+	/*
+	 * dst is unaligned
+	 * t0 = src & ADDRMASK
+	 * t1 = dst & ADDRMASK; T1 > 0
+	 * len >= NBYTES
+	 *
+	 * Copy enough bytes to align dst
+	 * Set match = (src and dst have same alignment)
+	 */
+#define match rem
+EXC(	LDFIRST	t3, FIRST(0)(src),	l_exc)
+	ADD	t2, zero, NBYTES
+EXC(	LDREST	t3, REST(0)(src),	l_exc_copy)
+	SUB	t2, t2, t1	# t2 = number of bytes copied
+	xor	match, t0, t1
+EXC(	STFIRST t3, FIRST(0)(dst),	s_exc)
+	SLL	t4, t1, 3		# t4 = number of bits to discard
+	SHIFT_DISCARD t3, t3, t4
+	/* no SHIFT_DISCARD_REVERT to handle odd buffer properly */
+	ADDC(sum, t3)
+	beq	len, t2, done
+	 SUB	len, len, t2
+	ADD	dst, dst, t2
+	beqz	match, both_aligned
+	 ADD	src, src, t2
+
+src_unaligned_dst_aligned:
+	SRL	t0, len, LOG_NBYTES+2    # +2 for 4 units/iter
+	beqz	t0, cleanup_src_unaligned
+	 and	rem, len, (4*NBYTES-1)   # rem = len % 4*NBYTES
+1:
+/*
+ * Avoid consecutive LD*'s to the same register since some mips
+ * implementations can't issue them in the same cycle.
+ * It's OK to load FIRST(N+1) before REST(N) because the two addresses
+ * are to the same unit (unless src is aligned, but it's not).
+ */
+EXC(	LDFIRST	t0, FIRST(0)(src),	l_exc)
+EXC(	LDFIRST	t1, FIRST(1)(src),	l_exc_copy)
+	SUB     len, len, 4*NBYTES
+EXC(	LDREST	t0, REST(0)(src),	l_exc_copy)
+EXC(	LDREST	t1, REST(1)(src),	l_exc_copy)
+EXC(	LDFIRST	t2, FIRST(2)(src),	l_exc_copy)
+EXC(	LDFIRST	t3, FIRST(3)(src),	l_exc_copy)
+EXC(	LDREST	t2, REST(2)(src),	l_exc_copy)
+EXC(	LDREST	t3, REST(3)(src),	l_exc_copy)
+	ADD	src, src, 4*NBYTES
+#ifdef CONFIG_CPU_SB1
+	nop				# improves slotting
+#endif
+EXC(	STORE	t0, UNIT(0)(dst),	s_exc)
+	ADDC(sum, t0)
+EXC(	STORE	t1, UNIT(1)(dst),	s_exc)
+	ADDC(sum, t1)
+EXC(	STORE	t2, UNIT(2)(dst),	s_exc)
+	ADDC(sum, t2)
+EXC(	STORE	t3, UNIT(3)(dst),	s_exc)
+	ADDC(sum, t3)
+	bne	len, rem, 1b
+	 ADD	dst, dst, 4*NBYTES
+
+cleanup_src_unaligned:
+	beqz	len, done
+	 and	rem, len, NBYTES-1  # rem = len % NBYTES
+	beq	rem, len, copy_bytes
+	 nop
+1:
+EXC(	LDFIRST t0, FIRST(0)(src),	l_exc)
+EXC(	LDREST	t0, REST(0)(src),	l_exc_copy)
+	ADD	src, src, NBYTES
+	SUB	len, len, NBYTES
+EXC(	STORE	t0, 0(dst),		s_exc)
+	ADDC(sum, t0)
+	bne	len, rem, 1b
+	 ADD	dst, dst, NBYTES
+
+copy_bytes_checklen:
+	beqz	len, done
+	 nop
+copy_bytes:
+	/* 0 < len < NBYTES  */
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define SHIFT_START 0
+#define SHIFT_INC 8
+#else
+#define SHIFT_START 8*(NBYTES-1)
+#define SHIFT_INC -8
+#endif
+	move	t2, zero	# partial word
+	li	t3, SHIFT_START	# shift
+/* use l_exc_copy here to return correct sum on fault */
+#define COPY_BYTE(N)			\
+EXC(	lbu	t0, N(src), l_exc_copy);	\
+	SUB	len, len, 1;		\
+EXC(	sb	t0, N(dst), s_exc);	\
+	SLLV	t0, t0, t3;		\
+	addu	t3, SHIFT_INC;		\
+	beqz	len, copy_bytes_done;	\
+	 or	t2, t0
+
+	COPY_BYTE(0)
+	COPY_BYTE(1)
+#ifdef USE_DOUBLE
+	COPY_BYTE(2)
+	COPY_BYTE(3)
+	COPY_BYTE(4)
+	COPY_BYTE(5)
+#endif
+EXC(	lbu	t0, NBYTES-2(src), l_exc_copy)
+	SUB	len, len, 1
+EXC(	sb	t0, NBYTES-2(dst), s_exc)
+	SLLV	t0, t0, t3
+	or	t2, t0
+copy_bytes_done:
+	ADDC(sum, t2)
+done:
+	/* fold checksum */
+#ifdef USE_DOUBLE
+	dsll32	v1, sum, 0
+	daddu	sum, v1
+	sltu	v1, sum, v1
+	dsra32	sum, sum, 0
+	addu	sum, v1
+#endif
+	sll	v1, sum, 16
+	addu	sum, v1
+	sltu	v1, sum, v1
+	srl	sum, sum, 16
+	addu	sum, v1
+
+	/* odd buffer alignment? */
+	beqz	odd, 1f
+	 nop
+	sll	v1, sum, 8
+	srl	sum, sum, 8
+	or	sum, v1
+	andi	sum, 0xffff
+1:
+	.set reorder
+	ADDC(sum, psum)
+	jr	ra
+	.set noreorder
+
+l_exc_copy:
+	/*
+	 * Copy bytes from src until faulting load address (or until a
+	 * lb faults)
+	 *
+	 * When reached by a faulting LDFIRST/LDREST, THREAD_BUADDR($28)
+	 * may be more than a byte beyond the last address.
+	 * Hence, the lb below may get an exception.
+	 *
+	 * Assumes src < THREAD_BUADDR($28)
+	 */
+	LOAD	t0, TI_TASK($28)
+	 li	t2, SHIFT_START
+	LOAD	t0, THREAD_BUADDR(t0)
+1:
+EXC(	lbu	t1, 0(src),	l_exc)
+	ADD	src, src, 1
+	sb	t1, 0(dst)	# can't fault -- we're copy_from_user
+	SLLV	t1, t1, t2
+	addu	t2, SHIFT_INC
+	ADDC(sum, t1)
+	bne	src, t0, 1b
+	 ADD	dst, dst, 1
+l_exc:
+	LOAD	t0, TI_TASK($28)
+	 nop
+	LOAD	t0, THREAD_BUADDR(t0)	# t0 is just past last good address
+	 nop
+	SUB	len, AT, t0		# len number of uncopied bytes
+	/*
+	 * Here's where we rely on src and dst being incremented in tandem,
+	 *   See (3) above.
+	 * dst += (fault addr - src) to put dst at first byte to clear
+	 */
+	ADD	dst, t0			# compute start address in a1
+	SUB	dst, src
+	/*
+	 * Clear len bytes starting at dst.  Can't call __bzero because it
+	 * might modify len.  An inefficient loop for these rare times...
+	 */
+	beqz	len, done
+	 SUB	src, len, 1
+1:	sb	zero, 0(dst)
+	ADD	dst, dst, 1
+	bnez	src, 1b
+	 SUB	src, src, 1
+	li	v1, -EFAULT
+	b	done
+	 sw	v1, (errptr)
+
+s_exc:
+	li	v0, -1 /* invalid checksum */
+	li	v1, -EFAULT
+	jr	ra
+	 sw	v1, (errptr)
+	END(__csum_partial_copy_user)

arch/mips/lib/csum_partial_copy.c

@@ -1,52 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1994, 1995 Waldorf Electronics GmbH
- * Copyright (C) 1998, 1999 Ralf Baechle
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <asm/byteorder.h>
-#include <asm/string.h>
-#include <asm/uaccess.h>
-#include <net/checksum.h>
-
-/*
- * copy while checksumming, otherwise like csum_partial
- */
-__wsum csum_partial_copy_nocheck(const void *src,
-	void *dst, int len, __wsum sum)
-{
-	/*
-	 * It's 2:30 am and I don't feel like doing it real ...
-	 * This is lots slower than the real thing (tm)
-	 */
-	sum = csum_partial(src, len, sum);
-	memcpy(dst, src, len);
-
-	return sum;
-}
-
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
-
-/*
- * Copy from userspace and compute checksum.  If we catch an exception
- * then zero the rest of the buffer.
- */
-__wsum csum_partial_copy_from_user (const void __user *src,
-	void *dst, int len, __wsum sum, int *err_ptr)
-{
-	int missing;
-
-	might_sleep();
-	missing = copy_from_user(dst, src, len);
-	if (missing) {
-		memset(dst + len - missing, 0, missing);
-		*err_ptr = -EFAULT;
-	}
-
-	return csum_partial(dst, len, sum);
-}

arch/mips/mips-boards/generic/time.c

@@ -47,6 +47,9 @@
 #ifdef CONFIG_MIPS_MALTA
 #include <asm/mips-boards/maltaint.h>
 #endif
+#ifdef CONFIG_MIPS_SEAD
+#include <asm/mips-boards/seadint.h>
+#endif
 
 unsigned long cpu_khz;
 
@@ -263,11 +266,13 @@ void __init mips_time_init(void)
 
 void __init plat_timer_setup(struct irqaction *irq)
 {
+#ifdef MSC01E_INT_BASE
 	if (cpu_has_veic) {
 		set_vi_handler (MSC01E_INT_CPUCTR, mips_timer_dispatch);
 		mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR;
-	}
-	else {
+	} else
+#endif
+	{
 		if (cpu_has_vint)
 			set_vi_handler (MIPSCPU_INT_CPUCTR, mips_timer_dispatch);
 		mips_cpu_timer_irq = MIPSCPU_INT_BASE + MIPSCPU_INT_CPUCTR;

arch/mips/mips-boards/malta/Makefile

@@ -19,5 +19,6 @@
 # under Linux.
 #
 
-obj-y := malta_int.o malta_mtd.o malta_setup.o
+obj-y := malta_int.o malta_setup.o
+obj-$(CONFIG_MTD) += malta_mtd.o
 obj-$(CONFIG_SMP) += malta_smp.o

arch/mips/mips-boards/malta/malta_mtd.c

@@ -0,0 +1,63 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 MIPS Technologies, Inc.
+ *     written by Ralf Baechle <ralf@linux-mips.org>
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <mtd/mtd-abi.h>
+
+static struct mtd_partition malta_mtd_partitions[] = {
+	{
+		.name =		"YAMON",
+		.offset =	0x0,
+		.size =		0x100000,
+		.mask_flags =	MTD_WRITEABLE
+	}, {
+		.name =		"User FS",
+		.offset = 	0x100000,
+		.size =		0x2e0000
+	}, {
+		.name =		"Board Config",
+		.offset =	0x3e0000,
+		.size =		0x020000,
+		.mask_flags =	MTD_WRITEABLE
+	}
+};
+
+static struct physmap_flash_data malta_flash_data = {
+	.width		= 4,
+	.nr_parts	= ARRAY_SIZE(malta_mtd_partitions),
+	.parts		= malta_mtd_partitions
+};
+
+static struct resource malta_flash_resource = {
+	.start		= 0x1e000000,
+	.end		= 0x1e3fffff,
+	.flags		= IORESOURCE_MEM
+};
+
+static struct platform_device malta_flash = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &malta_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &malta_flash_resource,
+};
+
+static int __init malta_mtd_init(void)
+{
+	platform_device_register(&malta_flash);
+
+	return 0;
+}
+
+module_init(malta_mtd_init)

arch/mips/mips-boards/sead/sead_int.c

@@ -21,7 +21,7 @@
  * Sead board.
  */
 #include <linux/init.h>
-#include <linux/irq.h>
+#include <linux/interrupt.h>
 
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
@@ -108,7 +108,7 @@ asmlinkage void plat_irq_dispatch(void)
 	if (irq >= 0)
 		do_IRQ(MIPSCPU_INT_BASE + irq);
 	else
-		spurious_interrupt(regs);
+		spurious_interrupt();
 }
 
 void __init arch_init_irq(void)

arch/mips/mips-boards/sim/sim_setup.c

@@ -57,7 +57,7 @@ void __init plat_mem_setup(void)
 	board_time_init = sim_time_init;
 	prom_printf("Linux started...\n");
 
-#ifdef CONFIG_MT_SMP
+#ifdef CONFIG_MIPS_MT_SMP
 	sanitize_tlb_entries();
 #endif
 }

arch/mips/mm/init.c

@@ -501,7 +501,8 @@ void free_initmem(void)
 
 	freed = prom_free_prom_memory();
 	if (freed)
-		printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
+		printk(KERN_INFO "Freeing firmware memory: %ldkb freed\n",
+		       freed >> 10);
 
 	free_init_pages("unused kernel memory",
 			__pa_symbol(&__init_begin),

arch/mips/mm/pg-r4k.c

@@ -243,11 +243,10 @@ static void __init __build_store_reg(int reg)
 
 static inline void build_store_reg(int reg)
 {
-	if (cpu_has_prefetch)
-		if (reg)
-			build_dst_pref(pref_offset_copy);
-		else
-			build_dst_pref(pref_offset_clear);
+	int pref_off = cpu_has_prefetch ?
+		(reg ? pref_offset_copy : pref_offset_clear) : 0;
+	if (pref_off)
+		build_dst_pref(pref_off);
 	else if (cpu_has_cache_cdex_s)
 		build_cdex_s();
 	else if (cpu_has_cache_cdex_p)

arch/mips/mm/tlb-r4k.c

@@ -106,7 +106,6 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 		ENTER_CRITICAL(flags);
 		size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
 		size = (size + 1) >> 1;
-		local_irq_save(flags);
 		if (size <= current_cpu_data.tlbsize/2) {
 			int oldpid = read_c0_entryhi();
 			int newpid = cpu_asid(cpu, mm);

arch/mips/momentum/ocelot_g/prom.c

@@ -28,7 +28,7 @@ struct callvectors* debug_vectors;
 extern unsigned long marvell_base;
 extern unsigned long bus_clock;
 
-#ifdef CONFIG_GALILLEO_GT64240_ETH
+#ifdef CONFIG_GALILEO_GT64240_ETH
 extern unsigned char prom_mac_addr_base[6];
 #endif
 
@@ -61,7 +61,7 @@ void __init prom_init(void)
 	mips_machgroup = MACH_GROUP_MOMENCO;
 	mips_machtype = MACH_MOMENCO_OCELOT_G;
 
-#ifdef CONFIG_GALILLEO_GT64240_ETH
+#ifdef CONFIG_GALILEO_GT64240_ETH
 	/* get the base MAC address for on-board ethernet ports */
 	memcpy(prom_mac_addr_base, (void*)0xfc807cf2, 6);
 #endif

arch/mips/momentum/ocelot_g/setup.c

@@ -64,7 +64,7 @@
 
 #include "ocelot_pld.h"
 
-#ifdef CONFIG_GALILLEO_GT64240_ETH
+#ifdef CONFIG_GALILEO_GT64240_ETH
 extern unsigned char prom_mac_addr_base[6];
 #endif
 
@@ -185,7 +185,7 @@ void __init plat_mem_setup(void)
 	/* do handoff reconfiguration */
 	PMON_v2_setup();
 
-#ifdef CONFIG_GALILLEO_GT64240_ETH
+#ifdef CONFIG_GALILEO_GT64240_ETH
 	/* get the mac addr */
 	memcpy(prom_mac_addr_base, (void*)0xfc807cf2, 6);
 #endif

arch/mips/pci/ops-pnx8550.c

@@ -202,7 +202,7 @@ write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 val)
 		break;
 	}
 
-	err = config_access(PCI_CMD_CONFIG_READ, bus, devfn, where, ~(1 << (where & 3)), &data);
+	err = config_access(PCI_CMD_CONFIG_WRITE, bus, devfn, where, ~(1 << (where & 3)), &data);
 
 	return err;
 }

arch/mips/philips/pnx8550/common/time.c

@@ -33,7 +33,17 @@
 #include <int.h>
 #include <cm.h>
 
-extern unsigned int mips_hpt_frequency;
+static unsigned long cpj;
+
+static cycle_t hpt_read(void)
+{
+	return read_c0_count2();
+}
+
+static void timer_ack(void)
+{
+	write_c0_compare(cpj);
+}
 
 /*
  * pnx8550_time_init() - it does the following things:
@@ -68,27 +78,48 @@ void pnx8550_time_init(void)
 	 * HZ timer interrupts per second.
 	 */
 	mips_hpt_frequency = 27UL * ((1000000UL * n)/(m * pow2p));
+	cpj = (mips_hpt_frequency + HZ / 2) / HZ;
+	write_c0_count(0);
+	timer_ack();
+
+	/* Setup Timer 2 */
+	write_c0_count2(0);
+	write_c0_compare2(0xffffffff);
+
+	clocksource_mips.read = hpt_read;
+	mips_timer_ack = timer_ack;
 }
 
+static irqreturn_t monotonic_interrupt(int irq, void *dev_id)
+{
+	/* Timer 2 clear interrupt */
+	write_c0_compare2(-1);
+	return IRQ_HANDLED;
+}
+
+static struct irqaction monotonic_irqaction = {
+	.handler = monotonic_interrupt,
+	.flags = IRQF_DISABLED,
+	.name = "Monotonic timer",
+};
+
 void __init plat_timer_setup(struct irqaction *irq)
 {
 	int configPR;
 
 	setup_irq(PNX8550_INT_TIMER1, irq);
+	setup_irq(PNX8550_INT_TIMER2, &monotonic_irqaction);
 
-	/* Start timer1 */
+	/* Timer 1 start */
 	configPR = read_c0_config7();
 	configPR &= ~0x00000008;
 	write_c0_config7(configPR);
 
-	/* Timer 2 stop */
+	/* Timer 2 start */
 	configPR = read_c0_config7();
-	configPR |= 0x00000010;
+	configPR &= ~0x00000010;
 	write_c0_config7(configPR);
 
-	write_c0_count2(0);
-	write_c0_compare2(0xffffffff);
-
 	/* Timer 3 stop */
 	configPR = read_c0_config7();
 	configPR |= 0x00000020;

arch/mips/vr41xx/common/irq.c

@@ -1,7 +1,7 @@
 /*
  *  Interrupt handing routines for NEC VR4100 series.
  *
- *  Copyright (C) 2005  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *  Copyright (C) 2005-2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -73,13 +73,19 @@ static void irq_dispatch(unsigned int irq)
 	if (cascade->get_irq != NULL) {
 		unsigned int source_irq = irq;
 		desc = irq_desc + source_irq;
-		desc->chip->ack(source_irq);
+		if (desc->chip->mask_ack)
+			desc->chip->mask_ack(source_irq);
+		else {
+			desc->chip->mask(source_irq);
+			desc->chip->ack(source_irq);
+		}
 		irq = cascade->get_irq(irq);
 		if (irq < 0)
 			atomic_inc(&irq_err_count);
 		else
 			irq_dispatch(irq);
-		desc->chip->end(source_irq);
+		if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
+			desc->chip->unmask(source_irq);
 	} else
 		do_IRQ(irq);
 }

arch/parisc/kernel/smp.c

@@ -608,7 +608,7 @@ void smp_cpus_done(unsigned int cpu_max)
 }
 
 
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 	if (cpu != 0 && cpu < parisc_max_cpus)
 		smp_boot_one_cpu(cpu);

arch/powerpc/Kconfig

@@ -436,7 +436,7 @@ config PPC_EFIKA
 	select RTAS_PROC
 	select PPC_MPC52xx
 	select PPC_NATIVE
-	default y
+	default n
 
 config PPC_LITE5200
 	bool "Freescale Lite5200 Eval Board"
@@ -471,7 +471,7 @@ config PPC_PREP
 	select PPC_INDIRECT_PCI
 	select PPC_UDBG_16550
 	select PPC_NATIVE
-	default y
+	default n
 
 config PPC_MAPLE
 	depends on PPC_MULTIPLATFORM && PPC64
@@ -484,6 +484,7 @@ config PPC_MAPLE
 	select PPC_970_NAP
 	select PPC_NATIVE
 	select PPC_RTAS
+	select ATA_NONSTANDARD if ATA
 	default n
 	help
           This option enables support for the Maple 970FX Evaluation Board.
@@ -525,12 +526,15 @@ config PPC_IBM_CELL_BLADE
 	select UDBG_RTAS_CONSOLE
 
 config PPC_PS3
-	bool "Sony PS3"
+	bool "Sony PS3 (incomplete)"
 	depends on PPC_MULTIPLATFORM && PPC64
 	select PPC_CELL
 	help
 	  This option enables support for the Sony PS3 game console
 	  and other platforms using the PS3 hypervisor.
+	  Support for this platform is not yet complete, so
+	  enabling this will not result in a bootable kernel on a
+	  PS3 system.
 
 config PPC_NATIVE
 	bool