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MIPS: pte_special()/pte_mkspecial() support

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Add support for pte_special() & pte_mkspecial(), replacing our previous
stubs with functional implementations.

Signed-off-by: Dmitry Korotin <dkorotin@wavecomp.com>
[paul.burton@mips.com:
  - Fix for CONFIG_PHYS_ADDR_T_64BIT && CONFIG_CPU_MIPS32.
  - Rewrite commit message.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
This commit is contained in:
Dmitry Korotin
2019-06-18 21:25:43 +00:00
committed by Paul Burton
parent a23c413495
commit 61cbfff4b1
3 changed files with 20 additions and 2 deletions
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5
arch/mips/include/asm/pgtable-bits.h
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@@ -52,6 +52,7 @@ enum pgtable_bits {
_PAGE_WRITE_SHIFT,
_PAGE_ACCESSED_SHIFT,
_PAGE_MODIFIED_SHIFT,
_PAGE_SPECIAL_SHIFT,
};
/*
@@ -78,6 +79,7 @@ enum pgtable_bits {
_PAGE_WRITE_SHIFT,
_PAGE_ACCESSED_SHIFT,
_PAGE_MODIFIED_SHIFT,
_PAGE_SPECIAL_SHIFT,
};
#elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
@@ -90,6 +92,7 @@ enum pgtable_bits {
_PAGE_WRITE_SHIFT,
_PAGE_ACCESSED_SHIFT,
_PAGE_MODIFIED_SHIFT,
_PAGE_SPECIAL_SHIFT,
/* Used by TLB hardware (placed in EntryLo) */
_PAGE_GLOBAL_SHIFT = 8,
@@ -113,6 +116,7 @@ enum pgtable_bits {
#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
_PAGE_HUGE_SHIFT,
#endif
_PAGE_SPECIAL_SHIFT,
/* Used by TLB hardware (placed in EntryLo*) */
#if defined(CONFIG_CPU_HAS_RIXI)
@@ -135,6 +139,7 @@ enum pgtable_bits {
#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
# define _PAGE_HUGE (1 << _PAGE_HUGE_SHIFT)
#endif
#define _PAGE_SPECIAL (1 << _PAGE_SPECIAL_SHIFT)
/* Used by TLB hardware (placed in EntryLo*) */
#if defined(CONFIG_XPA)