diff options
| author | Dmitry Shmidt <dimitrysh@google.com> | 2016-08-01 15:51:01 -0700 |
|---|---|---|
| committer | Dmitry Shmidt <dimitrysh@google.com> | 2016-08-01 15:57:55 -0700 |
| commit | b558f17a13b10761eb6f838e713425b9e83f8a01 (patch) | |
| tree | 425828a423411d6c65e5b18a3330d244eef987b0 /arch/x86/mm/fault.c | |
| parent | 818aa36ea868ba8f2985f9ca0906fd9cba3e437d (diff) | |
| parent | b05965f284db3e086022f4e318e46cb5bffb1376 (diff) | |
Merge tag 'v4.4.16' into android-4.4.y
This is the 4.4.16 stable release
Change-Id: Ibaf7b7e03695e1acebc654a2ca1a4bfcc48fcea4
Diffstat (limited to 'arch/x86/mm/fault.c')
| -rw-r--r-- | arch/x86/mm/fault.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index eef44d9a3f77..e830c71a1323 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -287,6 +287,9 @@ static noinline int vmalloc_fault(unsigned long address) if (!pmd_k) return -1; + if (pmd_huge(*pmd_k)) + return 0; + pte_k = pte_offset_kernel(pmd_k, address); if (!pte_present(*pte_k)) return -1; @@ -360,8 +363,6 @@ void vmalloc_sync_all(void) * 64-bit: * * Handle a fault on the vmalloc area - * - * This assumes no large pages in there. */ static noinline int vmalloc_fault(unsigned long address) { @@ -403,17 +404,23 @@ static noinline int vmalloc_fault(unsigned long address) if (pud_none(*pud_ref)) return -1; - if (pud_none(*pud) || pud_page_vaddr(*pud) != pud_page_vaddr(*pud_ref)) + if (pud_none(*pud) || pud_pfn(*pud) != pud_pfn(*pud_ref)) BUG(); + if (pud_huge(*pud)) + return 0; + pmd = pmd_offset(pud, address); pmd_ref = pmd_offset(pud_ref, address); if (pmd_none(*pmd_ref)) return -1; - if (pmd_none(*pmd) || pmd_page(*pmd) != pmd_page(*pmd_ref)) + if (pmd_none(*pmd) || pmd_pfn(*pmd) != pmd_pfn(*pmd_ref)) BUG(); + if (pmd_huge(*pmd)) + return 0; + pte_ref = pte_offset_kernel(pmd_ref, address); if (!pte_present(*pte_ref)) return -1; |