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powerpc: Fix VMX in interrupt check in POWER7 copy loops

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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 <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2012-08-07 17:51:41 +00:00 committed by Benjamin Herrenschmidt
parent dad477ccd6
commit 2fae7cdb60
2 changed files with 4 additions and 4 deletions
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4
arch/powerpc/lib/copyuser_power7.S
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@ -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

4
arch/powerpc/lib/memcpy_power7.S
View file

@ -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