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| author |   Matt Fleming <matt@console-pimps.org> | 2009-11-17 21:05:31 +0000 |
|---|---|---|
| committer | Matt Fleming <matt@console-pimps.org> | 2010-01-16 14:28:57 +0000 |
| commit | 8eda55142080f0373b1f0268fe6d6807f193e713 (patch) | |
| tree | 6d103af69153dc5bfd78ebe89930cf3c66ec5b2b /arch/sh/include/asm/pgtable_32.h | |
| parent | sh: Generalize SH7786 PCIe support. (diff) | |
| download | linux-dev-8eda55142080f0373b1f0268fe6d6807f193e713.tar.xz linux-dev-8eda55142080f0373b1f0268fe6d6807f193e713.zip | |
sh: New extended page flag to wire/unwire TLB entries
Provide a new extended page flag, _PAGE_WIRED and an SH4 implementation
for wiring TLB entries and use it in the fixmap code path so that we can
wire the fixmap TLB entry.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/include/asm/pgtable_32.h')
| -rw-r--r-- | arch/sh/include/asm/pgtable_32.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h index 5003ee86f67b..c573d45f1286 100644 --- a/arch/sh/include/asm/pgtable_32.h +++ b/arch/sh/include/asm/pgtable_32.h @@ -71,6 +71,8 @@ #define _PAGE_EXT_KERN_WRITE 0x1000 /* EPR4-bit: Kernel space writable */ #define _PAGE_EXT_KERN_READ 0x2000 /* EPR5-bit: Kernel space readable */ +#define _PAGE_EXT_WIRED 0x4000 /* software: Wire TLB entry */ + /* Wrapper for extended mode pgprot twiddling */ #define _PAGE_EXT(x) ((unsigned long long)(x) << 32) @@ -164,6 +166,8 @@ static inline unsigned long copy_ptea_attributes(unsigned long x) (PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | \ _PAGE_DIRTY | _PAGE_SPECIAL) +#define _PAGE_WIRED (_PAGE_EXT(_PAGE_EXT_WIRED)) + #ifndef __ASSEMBLY__ #if defined(CONFIG_X2TLB) /* SH-X2 TLB */ |