diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2009-02-10 05:57:46 -0500 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-11 00:07:02 -0500 |
| commit | f99fb8a2cbf0fd9ce9b2d5d298943d0d4dc479f7 (patch) | |
| tree | 6412544d8bfa43be47dd959a999680c077240d80 /arch | |
| parent | 1db8508cf483dc1ecf66141f90a7c03659d69512 (diff) | |
powerpc/mm: Fix _PAGE_COHERENT support on classic ppc32 HW
The following commit:
commit 64b3d0e8122b422e879b23d42f9e0e8efbbf9744
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu Dec 18 19:13:51 2008 +0000
powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED
broke setting of the _PAGE_COHERENT bit in the PPC HW PTE. Since we now
actually set _PAGE_COHERENT in the Linux PTE we shouldn't be clearing it
out before we propogate it to the PPC HW PTE.
Reported-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/hash_low_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S index 67850ec9feb3..14af8cedab70 100644 --- a/arch/powerpc/mm/hash_low_32.S +++ b/arch/powerpc/mm/hash_low_32.S | |||
| @@ -320,7 +320,7 @@ _GLOBAL(create_hpte) | |||
| 320 | and r8,r8,r0 /* writable if _RW & _DIRTY */ | 320 | and r8,r8,r0 /* writable if _RW & _DIRTY */ |
| 321 | rlwimi r5,r5,32-1,30,30 /* _PAGE_USER -> PP msb */ | 321 | rlwimi r5,r5,32-1,30,30 /* _PAGE_USER -> PP msb */ |
| 322 | rlwimi r5,r5,32-2,31,31 /* _PAGE_USER -> PP lsb */ | 322 | rlwimi r5,r5,32-2,31,31 /* _PAGE_USER -> PP lsb */ |
| 323 | ori r8,r8,0xe14 /* clear out reserved bits and M */ | 323 | ori r8,r8,0xe04 /* clear out reserved bits */ |
| 324 | andc r8,r5,r8 /* PP = user? (rw&dirty? 2: 3): 0 */ | 324 | andc r8,r5,r8 /* PP = user? (rw&dirty? 2: 3): 0 */ |
| 325 | BEGIN_FTR_SECTION | 325 | BEGIN_FTR_SECTION |
| 326 | rlwinm r8,r8,0,~_PAGE_COHERENT /* clear M (coherence not required) */ | 326 | rlwinm r8,r8,0,~_PAGE_COHERENT /* clear M (coherence not required) */ |