| Date | Wed, 16 Dec 2009 19:56:12 -0800 | From | Greg KH <> | Subject | [075/151] powerpc: Fix usage of 64-bit instruction in 32-bit altivec code |
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2.6.32-stable review patch. If anyone has any objections, please let us know.
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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>
--- arch/powerpc/kernel/vector.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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
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