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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-13 16:35:09 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-13 16:35:09 +0000 |
| commit | bc7ecbcbc2c0ff235382077b55de7896775afc16 (patch) | |
| tree | 9918b2f3fdeebd9c99a308af94d86bc13c80d0c8 /arch/powerpc/include/asm/pte-hash64-64k.h | |
| parent | c52854018ad123c9ef83867462457b75bb56d452 (diff) | |
| parent | 285eae0a4ba0f467341476fd4c6981e5cdafc6be (diff) | |
Merge branch 'devel' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel
Diffstat (limited to 'arch/powerpc/include/asm/pte-hash64-64k.h')
| -rw-r--r-- | arch/powerpc/include/asm/pte-hash64-64k.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/powerpc/include/asm/pte-hash64-64k.h b/arch/powerpc/include/asm/pte-hash64-64k.h index 82b72207c51..c4490f9c67c 100644 --- a/arch/powerpc/include/asm/pte-hash64-64k.h +++ b/arch/powerpc/include/asm/pte-hash64-64k.h @@ -76,41 +76,4 @@ remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, \ __pgprot(pgprot_val((prot)) | _PAGE_4K_PFN)) - -#ifdef CONFIG_PPC_SUBPAGE_PROT -/* - * For the sub-page protection option, we extend the PGD with one of - * these. Basically we have a 3-level tree, with the top level being - * the protptrs array. To optimize speed and memory consumption when - * only addresses < 4GB are being protected, pointers to the first - * four pages of sub-page protection words are stored in the low_prot - * array. - * Each page of sub-page protection words protects 1GB (4 bytes - * protects 64k). For the 3-level tree, each page of pointers then - * protects 8TB. - */ -struct subpage_prot_table { - unsigned long maxaddr; /* only addresses < this are protected */ - unsigned int **protptrs[2]; - unsigned int *low_prot[4]; -}; - -#undef PGD_TABLE_SIZE -#define PGD_TABLE_SIZE ((sizeof(pgd_t) << PGD_INDEX_SIZE) + \ - sizeof(struct subpage_prot_table)) - -#define SBP_L1_BITS (PAGE_SHIFT - 2) -#define SBP_L2_BITS (PAGE_SHIFT - 3) -#define SBP_L1_COUNT (1 << SBP_L1_BITS) -#define SBP_L2_COUNT (1 << SBP_L2_BITS) -#define SBP_L2_SHIFT (PAGE_SHIFT + SBP_L1_BITS) -#define SBP_L3_SHIFT (SBP_L2_SHIFT + SBP_L2_BITS) - -extern void subpage_prot_free(pgd_t *pgd); - -static inline struct subpage_prot_table *pgd_subpage_prot(pgd_t *pgd) -{ - return (struct subpage_prot_table *)(pgd + PTRS_PER_PGD); -} -#endif /* CONFIG_PPC_SUBPAGE_PROT */ #endif /* __ASSEMBLY__ */ |