diff options
| author | David S. Miller <davem@davemloft.net> | 2013-02-13 12:21:06 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-13 12:22:14 -0800 |
| commit | 89a77915e0f56dc7b9f9082ba787895b6a83f809 (patch) | |
| tree | ce147ee36f1117dddeac5e1ba53eab9986b1f47b /arch/sparc/include | |
| parent | b9156ebb7beef015745f917f373abc137efc3400 (diff) | |
| download | blackbird-obmc-linux-89a77915e0f56dc7b9f9082ba787895b6a83f809.tar.gz blackbird-obmc-linux-89a77915e0f56dc7b9f9082ba787895b6a83f809.zip | |
sparc64: Fix get_user_pages_fast() wrt. THP.
Mostly mirrors the s390 logic, as unlike x86 we don't need the
SetPageReferenced() bits.
On sparc64 we also lack a user/privileged bit in the huge PMDs.
In order to make this work for THP and non-THP builds, some header
file adjustments were necessary. Namely, provide the PMD_HUGE_* bit
defines and the pmd_large() inline unconditionally rather than
protected by TRANSPARENT_HUGEPAGE.
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_64.h | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 7870be0f5adc..08fcce90316b 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -71,7 +71,6 @@ #define PMD_PADDR _AC(0xfffffffe,UL) #define PMD_PADDR_SHIFT _AC(11,UL) -#ifdef CONFIG_TRANSPARENT_HUGEPAGE #define PMD_ISHUGE _AC(0x00000001,UL) /* This is the PMD layout when PMD_ISHUGE is set. With 4MB huge @@ -86,7 +85,6 @@ #define PMD_HUGE_ACCESSED _AC(0x00000080,UL) #define PMD_HUGE_EXEC _AC(0x00000040,UL) #define PMD_HUGE_SPLITTING _AC(0x00000020,UL) -#endif /* PGDs point to PMD tables which are 8K aligned. */ #define PGD_PADDR _AC(0xfffffffc,UL) @@ -628,6 +626,12 @@ static inline unsigned long pte_special(pte_t pte) return pte_val(pte) & _PAGE_SPECIAL; } +static inline int pmd_large(pmd_t pmd) +{ + return (pmd_val(pmd) & (PMD_ISHUGE | PMD_HUGE_PRESENT)) == + (PMD_ISHUGE | PMD_HUGE_PRESENT); +} + #ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline int pmd_young(pmd_t pmd) { @@ -646,12 +650,6 @@ static inline unsigned long pmd_pfn(pmd_t pmd) return val >> (PAGE_SHIFT - PMD_PADDR_SHIFT); } -static inline int pmd_large(pmd_t pmd) -{ - return (pmd_val(pmd) & (PMD_ISHUGE | PMD_HUGE_PRESENT)) == - (PMD_ISHUGE | PMD_HUGE_PRESENT); -} - static inline int pmd_trans_splitting(pmd_t pmd) { return (pmd_val(pmd) & (PMD_ISHUGE|PMD_HUGE_SPLITTING)) == |
