Commit e0a45e35 authored by David S. Miller's avatar David S. Miller

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: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarBob Picco <bob.picco@oracle.com>
parent 922631b9
......@@ -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__
......
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