From 2fae7cdb60240e2e2d9b378afbf6d9fcce8a3890 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 7 Aug 2012 17:51:41 +0000 Subject: powerpc: Fix VMX in interrupt check in POWER7 copy loops The enhanced prefetch hint patches corrupt the condition register that was used to check if we are in interrupt. Fix this by using cr1. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/lib/copyuser_power7.S | 4 ++-- arch/powerpc/lib/memcpy_power7.S | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/powerpc/lib') diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S index 4a4a46f..0d24ff1 100644 --- a/arch/powerpc/lib/copyuser_power7.S +++ b/arch/powerpc/lib/copyuser_power7.S @@ -288,7 +288,7 @@ err1; stb r0,0(r3) std r0,16(r1) stdu r1,-STACKFRAMESIZE(r1) bl .enter_vmx_usercopy - cmpwi r3,0 + cmpwi cr1,r3,0 ld r0,STACKFRAMESIZE+16(r1) ld r3,STACKFRAMESIZE+48(r1) ld r4,STACKFRAMESIZE+56(r1) @@ -326,7 +326,7 @@ err1; stb r0,0(r3) dcbt r0,r8,0b01010 /* GO */ .machine pop - beq .Lunwind_stack_nonvmx_copy + beq cr1,.Lunwind_stack_nonvmx_copy /* * If source and destination are not relatively aligned we use a diff --git a/arch/powerpc/lib/memcpy_power7.S b/arch/powerpc/lib/memcpy_power7.S index 0efdc51..7ba6c96 100644 --- a/arch/powerpc/lib/memcpy_power7.S +++ b/arch/powerpc/lib/memcpy_power7.S @@ -222,7 +222,7 @@ _GLOBAL(memcpy_power7) std r0,16(r1) stdu r1,-STACKFRAMESIZE(r1) bl .enter_vmx_copy - cmpwi r3,0 + cmpwi cr1,r3,0 ld r0,STACKFRAMESIZE+16(r1) ld r3,STACKFRAMESIZE+48(r1) ld r4,STACKFRAMESIZE+56(r1) @@ -260,7 +260,7 @@ _GLOBAL(memcpy_power7) dcbt r0,r8,0b01010 /* GO */ .machine pop - beq .Lunwind_stack_nonvmx_copy + beq cr1,.Lunwind_stack_nonvmx_copy /* * If source and destination are not relatively aligned we use a -- cgit v1.1