diff options
| author | Nitin Gupta | 2017-07-29 11:42:17 -0700 |
|---|---|---|
| committer | David S. Miller | 2017-08-09 22:11:11 -0700 |
| commit | c9a844c5100a01c024b59401e5963ff65d6b5f31 (patch) | |
| tree | 27154bb7e9ac6e7ef248abb3c9cbbda37bcb9994 /arch/sparc/include | |
| parent | cb8c65ccff7f77d0285f1b126c72d37b2572c865 (diff) | |
sparc64: Support huge PUD case in get_user_pages
get_user_pages() is used to do direct IO. It already
handles the case where the address range is backed
by PMD huge pages. This patch now adds the case where
the range could be backed by PUD huge pages.
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.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 | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 6fbd931f0570..2579f5a22f46 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -687,6 +687,8 @@ static inline unsigned long pmd_write(pmd_t pmd) return pte_write(pte); } +#define pud_write(pud) pte_write(__pte(pud_val(pud))) + #ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline unsigned long pmd_dirty(pmd_t pmd) { @@ -823,9 +825,18 @@ static inline unsigned long __pmd_page(pmd_t pmd) return ((unsigned long) __va(pfn << PAGE_SHIFT)); } + +static inline unsigned long pud_page_vaddr(pud_t pud) +{ + pte_t pte = __pte(pud_val(pud)); + unsigned long pfn; + + pfn = pte_pfn(pte); + + return ((unsigned long) __va(pfn << PAGE_SHIFT)); +} + #define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd)) -#define pud_page_vaddr(pud) \ - ((unsigned long) __va(pud_val(pud))) #define pud_page(pud) virt_to_page((void *)pud_page_vaddr(pud)) #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL) #define pud_present(pud) (pud_val(pud) != 0U) |