diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2004-02-06 14:00:29 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2004-02-06 14:00:29 +1100 |
| commit | f74710a0bfb50dedac27e544faf8b7b418ff9008 (patch) | |
| tree | 1a9fd2b57b358c4ed5f752a89ac801a47298eb26 /include | |
| parent | c380a04843bba969ea48a3b54b8e4fcaa7427297 (diff) | |
ppc32: Flush the Hash PTE in ptep_test_and_clear_young()
Without this, page aging is broken on ppc32
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ppc/pgtable.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h index 0cf6aab40dfb..8ac2de22eadd 100644 --- a/include/asm-ppc/pgtable.h +++ b/include/asm-ppc/pgtable.h @@ -511,9 +511,21 @@ static inline void set_pte(pte_t *ptep, pte_t pte) #endif } +extern void flush_hash_one_pte(pte_t *ptep); + +/* + * 2.6 calles this without flushing the TLB entry, this is wrong + * for our hash-based implementation, we fix that up here + */ static inline int ptep_test_and_clear_young(pte_t *ptep) { - return (pte_update(ptep, _PAGE_ACCESSED, 0) & _PAGE_ACCESSED) != 0; + unsigned long old; + old = (pte_update(ptep, _PAGE_ACCESSED, 0) & _PAGE_ACCESSED); +#if _PAGE_HASHPTE != 0 + if (old & _PAGE_HASHPTE) + flush_hash_one_pte(ptep); +#endif + return old != 0; } static inline int ptep_test_and_clear_dirty(pte_t *ptep) |