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powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES

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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>
This commit is contained in:
Kumar Gala 2008-07-14 08:08:45 -05:00 committed by Benjamin Herrenschmidt
parent 7ff86b0317
commit 585583d95c
1 changed files with 1 additions and 1 deletions
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2
include/asm-powerpc/pgtable-ppc32.h
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@ -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