diff options
| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-03-09 17:24:07 +0300 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-09 11:48:47 -0800 |
| commit | c2febafc67734a62196c1b9dfba926412d4077ba (patch) | |
| tree | a61b7cd503e4c6d2fbb58f0cb53662ffd60b4c14 /drivers | |
| parent | asm-generic: introduce <asm-generic/pgtable-nop4d.h> (diff) | |
| download | linux-dev-c2febafc67734a62196c1b9dfba926412d4077ba.tar.xz linux-dev-c2febafc67734a62196c1b9dfba926412d4077ba.zip | |
mm: convert generic code to 5-level paging
Convert all non-architecture-specific code to 5-level paging.
It's mostly mechanical adding handling one more page table level in
places where we deal with pud_t.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 6fb773dbcd0c..93be82fc338a 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -219,15 +219,20 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr, int write, unsigned long *paddr, int *pageshift) { pgd_t *pgdp; - pmd_t *pmdp; + p4d_t *p4dp; pud_t *pudp; + pmd_t *pmdp; pte_t pte; pgdp = pgd_offset(vma->vm_mm, vaddr); if (unlikely(pgd_none(*pgdp))) goto err; - pudp = pud_offset(pgdp, vaddr); + p4dp = p4d_offset(pgdp, vaddr); + if (unlikely(p4d_none(*p4dp))) + goto err; + + pudp = pud_offset(p4dp, vaddr); if (unlikely(pud_none(*pudp))) goto err; |