From: Kumar Gala Date: Mon, 14 Jul 2008 13:08:45 +0000 (-0500) Subject: powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES X-Git-Tag: v2.6.27-rc1~1058^2~2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=585583d95c5660973bc0cf64add517b040acd8a4;p=linux-2.6 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 Acked-by: Josh Boyer Signed-off-by: Benjamin Herrenschmidt --- diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h index 11eede4a29..73015f0139 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