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powerpc/mm/book3s-64: Move software-used bits in PTE 

This moves the _PAGE_SPECIAL and _PAGE_SOFT_DIRTY bits in the Linux
PTE on 64-bit Book 3S systems to bit positions which are designated
for software use in the radix PTE format used by PowerISA v3.0 CPUs
in radix mode.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Paul Mackerras 2016-02-22 13:41:19 +11:00 committed by Michael Ellerman
parent c915df162d
commit e726202f06
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/include/asm/book3s/64/hash.h
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@ -26,13 +26,13 @@
#define _PAGE_WRITETHRU 0x00040 /* W: cache write-through */
#define _PAGE_DIRTY 0x00080 /* C: page changed */
#define _PAGE_ACCESSED 0x00100 /* R: page referenced */
#define _PAGE_SPECIAL 0x00400 /* software: special page */
#define _PAGE_BUSY 0x00800 /* software: PTE & hash are busy */
#define _PAGE_SPECIAL 0x10000 /* software: special page */
#ifdef CONFIG_MEM_SOFT_DIRTY
#define _PAGE_SOFT_DIRTY 0x20000 /* software: software dirty tracking */
#define _PAGE_SOFT_DIRTY 0x200 /* software: software dirty tracking */
#else
#define _PAGE_SOFT_DIRTY 0x00000
#define _PAGE_SOFT_DIRTY 0x000
#endif
#define _PAGE_F_GIX_SHIFT 57