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authorQi Zheng <zhengqi.arch@bytedance.com>2023-08-10 12:32:41 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-08-25 02:20:27 +0300
commit00de2c9f26b15f1a6f2af516dd8ec5f8d28189b7 (patch)
treed7535a576f4d3448515425bfeed96ba5063d6c9f /arch/arm64
parent5003a2bdf6880dc9c301f555bece1154081158fe (diff)
downloadlinux-00de2c9f26b15f1a6f2af516dd8ec5f8d28189b7.tar.xz
arm64: mm: use ptep_clear() instead of pte_clear() in clear_flush()
In clear_flush(), the original pte may be a present entry, so we should use ptep_clear() to let page_table_check track the pte clearing operation, otherwise it may cause false positive in subsequent set_pte_at(). Link: https://lkml.kernel.org/r/20230810093241.1181142-1-qi.zheng@linux.dev Fixes: 42b2547137f5 ("arm64/mm: enable ARCH_SUPPORTS_PAGE_TABLE_CHECK") Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com> Acked-by: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/mm/hugetlbpage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index 21716c940682..9c52718ea750 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -236,7 +236,7 @@ static void clear_flush(struct mm_struct *mm,
unsigned long i, saddr = addr;
for (i = 0; i < ncontig; i++, addr += pgsize, ptep++)
- pte_clear(mm, addr, ptep);
+ ptep_clear(mm, addr, ptep);
flush_tlb_range(&vma, saddr, addr);
}