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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-09-25 20:31:16 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-09 13:37:31 +0200 |
| commit | 5ea0bbaa32e8f54e9a57cfee4a3b8769b80be0d2 (patch) | |
| tree | ffdba505c072825ffa2b49430903d11167a2ba2f /arch | |
| parent | powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE (diff) | |
| download | linux-5ea0bbaa32e8f54e9a57cfee4a3b8769b80be0d2.tar.xz linux-5ea0bbaa32e8f54e9a57cfee4a3b8769b80be0d2.zip | |
powerpc/64e: Fix wrong test in __ptep_test_and_clear_young()
Commit 45201c879469 ("powerpc/nohash: Remove hash related code from
nohash headers.") replaced:
if ((pte_val(*ptep) & (_PAGE_ACCESSED | _PAGE_HASHPTE)) == 0)
return 0;
By:
if (pte_young(*ptep))
return 0;
But it should be:
if (!pte_young(*ptep))
return 0;
Fix it.
Fixes: 45201c879469 ("powerpc/nohash: Remove hash related code from nohash headers.")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/8bb7f06494e21adada724ede47a4c3d97e879d40.1695659959.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/64/pgtable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 5cd9acf58a7d..eb6891e34cbd 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -197,7 +197,7 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm, { unsigned long old; - if (pte_young(*ptep)) + if (!pte_young(*ptep)) return 0; old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); return (old & _PAGE_ACCESSED) != 0; |