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| author | Bibo Mao <maobibo@loongson.cn> | 2021-02-24 21:06:42 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-24 22:38:32 +0100 |
| commit | fca40573e0f742dfd81cf20b8a7c6ce0e543b8b6 (patch) | |
| tree | 1354d60feda27741926a46f4b38675a03829485a /mm/huge_memory.c | |
| parent | mm,hwpoison: send SIGBUS to PF_MCE_EARLY processes on action required events (diff) | |
| download | linux-fca40573e0f742dfd81cf20b8a7c6ce0e543b8b6.tar.xz linux-fca40573e0f742dfd81cf20b8a7c6ce0e543b8b6.zip | |
mm/huge_memory.c: update tlb entry if pmd is changed
When set_pmd_at is called in function do_huge_pmd_anonymous_page, new tlb
entry can be added by software on MIPS platform.
Here add update_mmu_cache_pmd when pmd entry is set, and
update_mmu_cache_pmd is defined as empty excepts arc/mips platform. This
patch has no negative effect on other platforms except arc/mips system.
Link: http://lkml.kernel.org/r/1592990792-1923-2-git-send-email-maobibo@loongson.cn
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Daniel Silsby <dansilsby@gmail.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 86a3015ba54f..080b471c4fbf 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -636,6 +636,7 @@ static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf, lru_cache_add_inactive_or_unevictable(page, vma); pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable); set_pmd_at(vma->vm_mm, haddr, vmf->pmd, entry); + update_mmu_cache_pmd(vma, vmf->address, vmf->pmd); add_mm_counter(vma->vm_mm, MM_ANONPAGES, HPAGE_PMD_NR); mm_inc_nr_ptes(vma->vm_mm); spin_unlock(vmf->ptl); @@ -749,6 +750,7 @@ vm_fault_t do_huge_pmd_anonymous_page(struct vm_fault *vmf) } else { set_huge_zero_page(pgtable, vma->vm_mm, vma, haddr, vmf->pmd, zero_page); + update_mmu_cache_pmd(vma, vmf->address, vmf->pmd); spin_unlock(vmf->ptl); } } else { |