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Commit e726202f authored by Paul Mackerras's avatar Paul Mackerras Committed by Michael Ellerman
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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: default avatarPaul Mackerras <paulus@samba.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent c915df16

arch/powerpc/include/asm/book3s/64/hash.h

+3 −3
Original line number Diff line number Diff line
@@ -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