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| author |   Paul Mackerras <paulus@samba.org> | 2016-02-22 13:41:16 +1100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-02-29 20:34:39 +1100 |
| commit | 84c957560a7a8f548aaf6b6b2b15e6d03b7249e2 (patch) | |
| tree | f142e102797cd7281f1e7dac90fd632f669f27f2 /arch | |
| parent | powerpc/mm/book3s-64: Move _PAGE_PRESENT to the most significant bit (diff) | |
| download | linux-dev-84c957560a7a8f548aaf6b6b2b15e6d03b7249e2.tar.xz linux-dev-84c957560a7a8f548aaf6b6b2b15e6d03b7249e2.zip | |
powerpc/mm/book3s-64: Move _PAGE_PTE to 2nd most significant bit
This changes _PAGE_PTE for 64-bit Book 3S processors from 0x1 to
0x4000_0000_0000_0000, because that bit is used as the L (leaf)
bit by PowerISA v3.0 CPUs in radix mode. The "leaf" bit indicates
that the PTE points to a page directly rather than another radix
level, which is what the _PAGE_PTE bit means.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 36ff107b9469..14cfd49b2ab0 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -13,7 +13,6 @@ * We could create separate kernel read-only if we used the 3 PP bits * combinations that newer processors provide but we currently don't. */ -#define _PAGE_PTE 0x00001 /* distinguishes PTEs from pointers */ #define _PAGE_BIT_SWAP_TYPE 2 #define _PAGE_USER 0x00004 /* page may be accessed by userspace */ #define _PAGE_EXEC 0x00008 /* execute permission */ @@ -38,6 +37,7 @@ #define _PAGE_SOFT_DIRTY 0x00000 #endif +#define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ #define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ /* |