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| author |   Kumar Gala <galak@kernel.crashing.org> | 2008-07-14 08:08:45 -0500 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-15 15:44:02 +1000 |
| commit | 585583d95c5660973bc0cf64add517b040acd8a4 (patch) | |
| tree | 4885b69235f5d34bd76260747dcf93f51a362b50 /include/asm-powerpc/pgtable-ppc32.h | |
| parent | powerpc: Fix a build problem on ppc32 with new DMA_ATTRs (diff) | |
| download | linux-dev-585583d95c5660973bc0cf64add517b040acd8a4.tar.xz linux-dev-585583d95c5660973bc0cf64add517b040acd8a4.zip | |
powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES
Because the pte is now 64-bits the compiler was optimizing the update
to always clear the upper 32-bits of the pte. We need to ensure the
clr mask is treated as an unsigned long long to get the proper behavior.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc/pgtable-ppc32.h')
| -rw-r--r-- | include/asm-powerpc/pgtable-ppc32.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h index 11eede4a2906..73015f0139de 100644 --- a/include/asm-powerpc/pgtable-ppc32.h +++ b/include/asm-powerpc/pgtable-ppc32.h @@ -624,7 +624,7 @@ static inline unsigned long long pte_update(pte_t *p, : "cc" ); #else /* PTE_ATOMIC_UPDATES */ unsigned long long old = pte_val(*p); - *p = __pte((old & ~clr) | set); + *p = __pte((old & ~(unsigned long long)clr) | set); #endif /* !PTE_ATOMIC_UPDATES */ #ifdef CONFIG_44x |