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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 <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
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
View File

@ -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