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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 06:23:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-14 06:23:01 +0300 |
| commit | 93c222c0e126c1c24ac454acf013f2c85e57bd8b (patch) | |
| tree | 920c429de92857aaf74e64a0f4f9fbaec7032fcf /arch/arm64/include/asm/pgtable.h | |
| parent | f89c2b39ce676cb08b6ed8848cde76dcb21cc672 (diff) | |
| parent | 9f9499ae8e6415cefc4fe0a96ad0e27864353c89 (diff) | |
| download | linux-93c222c0e126c1c24ac454acf013f2c85e57bd8b.tar.xz | |
Merge 4.4-rc5 into staging-next
We want those fixes in here for testing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 7e074f93f383..63f52b55defe 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -276,10 +276,14 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, * hardware updates of the pte (ptep_set_access_flags safely changes * valid ptes without going through an invalid entry). */ - if (IS_ENABLED(CONFIG_DEBUG_VM) && IS_ENABLED(CONFIG_ARM64_HW_AFDBM) && - pte_valid(*ptep)) { - BUG_ON(!pte_young(pte)); - BUG_ON(pte_write(*ptep) && !pte_dirty(pte)); + if (IS_ENABLED(CONFIG_ARM64_HW_AFDBM) && + pte_valid(*ptep) && pte_valid(pte)) { + VM_WARN_ONCE(!pte_young(pte), + "%s: racy access flag clearing: 0x%016llx -> 0x%016llx", + __func__, pte_val(*ptep), pte_val(pte)); + VM_WARN_ONCE(pte_write(*ptep) && !pte_dirty(pte), + "%s: racy dirty state clearing: 0x%016llx -> 0x%016llx", + __func__, pte_val(*ptep), pte_val(pte)); } set_pte(ptep, pte); |