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authorBibo Mao <maobibo@loongson.cn>2021-02-24 12:06:42 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-24 13:38:32 -0800
commitfca40573e0f742dfd81cf20b8a7c6ce0e543b8b6 (patch)
tree1354d60feda27741926a46f4b38675a03829485a /mm/huge_memory.c
parent30c9cf49270423f8cb0d2c152486e248f375cccb (diff)
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.c2
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 {