diff options
author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2015-12-01 09:06:52 +0530 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-14 15:19:13 +1100 |
commit | 26a344aea48c99cfd80d292a470a480e1c2bd5d9 (patch) | |
tree | 68bb22d0a56dc7539e943d613bb9eb1b6c57a0ed /arch/powerpc/include/asm/book3s/64/hash-4k.h | |
parent | 40e8550afc19dfc588171c089cb3f31f7b9e16f7 (diff) |
powerpc/mm: Move hugetlb related headers
W.r.t hugetlb, we support two format for pmd. With book3s_64 and
64K linux page size, we can have pte at the pmd level. Hence we
don't need to support hugepd there. For everything else hugepd
is supported and pmd_huge is (0).
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash-4k.h')
-rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-4k.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index 75e8b9326e4b..b4d25529d179 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -93,6 +93,37 @@ extern struct page *pgd_page(pgd_t pgd); #define remap_4k_pfn(vma, addr, pfn, prot) \ remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, (prot)) +#ifdef CONFIG_HUGETLB_PAGE +/* + * For 4k page size, we support explicit hugepage via hugepd + */ +static inline int pmd_huge(pmd_t pmd) +{ + return 0; +} + +static inline int pud_huge(pud_t pud) +{ + return 0; +} + +static inline int pgd_huge(pgd_t pgd) +{ + return 0; +} +#define pgd_huge pgd_huge + +static inline int hugepd_ok(hugepd_t hpd) +{ + /* + * hugepd pointer, bottom two bits == 00 and next 4 bits + * indicate size of table + */ + return (((hpd.pd & 0x3) == 0x0) && ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)); +} +#define is_hugepd(hpd) (hugepd_ok(hpd)) +#endif + #endif /* !__ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_HASH_4K_H */ |