From: David S. Miller Date: Wed, 18 Sep 2013 21:22:34 +0000 (-0700) Subject: sparc64: Define PAGE_OFFSET in terms of physical address bits. X-Git-Tag: v3.13-rc1~78^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e0a45e3580a033669b24b04c3535515d69bb9702;p=platform%2Fkernel%2Flinux-stable.git sparc64: Define PAGE_OFFSET in terms of physical address bits. This makes clearer the implications for a given choosen value. Based upon patches by Bob Picco. Signed-off-by: David S. Miller Acked-by: Bob Picco --- diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h index d959312..9dd0f73 100644 --- a/arch/sparc/include/asm/page_64.h +++ b/arch/sparc/include/asm/page_64.h @@ -117,7 +117,9 @@ typedef pte_t *pgtable_t; /* We used to stick this into a hard-coded global register (%g4) * but that does not make sense anymore. */ -#define PAGE_OFFSET _AC(0xFFFFF80000000000,UL) +#define MAX_SUPPORTED_PA_BITS 43 +#define PAGE_OFFSET_BY_BITS(X) (-(_AC(1,UL) << (X))) +#define PAGE_OFFSET PAGE_OFFSET_BY_BITS(MAX_SUPPORTED_PA_BITS) #ifndef __ASSEMBLY__