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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-08 18:45:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-18 13:43:47 -0800 |
| commit | 7c52c4436288e1eec78edaca6366658b33fb54e2 (patch) | |
| tree | bf5ffc9a6847d385ed6989cca75d5b6375e89a39 | |
| parent | 6d56cf9ae2582f7b35975368f4d2569833d20bc3 (diff) | |
| download | lwn-7c52c4436288e1eec78edaca6366658b33fb54e2.tar.gz lwn-7c52c4436288e1eec78edaca6366658b33fb54e2.zip | |
powerpc: Fix usage of 64-bit instruction in 32-bit altivec code
commit e090aa80321b64c3b793f3b047e31ecf1af9538d upstream.
e821ea70f3b4873b50056a1e0f74befed1014c09 introduced a bug by copying
some 64-bit originated code as-is to be used by both 32 and 64-bit
but this code contains a 64-bit ony "cmpdi" instruction.
This changes it to cmpwi, which is fine since VRSAVE can only contains
a 32-bit value anyway.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/powerpc/kernel/vector.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index ea4d64644d02..419f492cb586 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S @@ -58,7 +58,7 @@ _GLOBAL(load_up_altivec) * all 1's */ mfspr r4,SPRN_VRSAVE - cmpdi 0,r4,0 + cmpwi 0,r4,0 bne+ 1f li r4,-1 mtspr SPRN_VRSAVE,r4 |