diff options
| author | David S. Miller <davem@davemloft.net> | 2013-09-18 14:22:34 -0700 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-10-31 15:06:49 +0100 |
| commit | 5c1bc5289ed4f7391c9722670f6da74de41fec0c (patch) | |
| tree | ffcd304fb1a8abbbb5620af15d8e2bbb3293b5fe /arch | |
| parent | 642c2dbbb0907ec68ae3b3aed3a14312d9275567 (diff) | |
sparc64: Define PAGE_OFFSET in terms of physical address bits.
commit e0a45e3580a033669b24b04c3535515d69bb9702 upstream.
This makes clearer the implications for a given choosen
value.
Based upon patches by Bob Picco.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Bob Picco <bob.picco@oracle.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/include/asm/page_64.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h index d95931247feb..9dd0f7360822 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__ |