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The hot removal of IOAPIC is handling PCI and ACPI removal in one go. That only works when the PCI drivers released the interrupt resources, but breaks when a IOAPIC interrupt is still associated to a PCI device. The new pcibios_release_device() callback allows to solve that problem by splitting the removal into two steps: 1) PCI removal: Release all PCI resources including eventually not yet released IOAPIC interrupts via the new pcibios_release_device() callback. 2) ACPI removal: After release of all PCI resources the ACPI resources can be released without issue. [ tglx: Rewrote changelog ] Signed-off-by: Rui Wang <rui.y.wang@intel.com> Cc: tony.luck@intel.com Cc: linux-pci@vger.kernel.org Cc: rjw@rjwysocki.net Cc: linux-acpi@vger.kernel.org Cc: fengguang.wu@intel.com Cc: helgaas@kernel.org Cc: kbuild-all@01.org Cc: bhelgaas@google.com Link: http://lkml.kernel.org/r/1488288869-31290-3-git-send-email-rui.y.wang@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.