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authorChristophe Leroy <christophe.leroy@csgroup.eu>2020-10-22 12:29:21 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2020-12-04 14:13:19 +0300
commitff57698a9610fcf7d9c4469bf68c881eff22e2f8 (patch)
tree38f5953050157ffa9298fc787df198ff8d26edf9 /arch/powerpc/kvm/powerpc.c
parentd85be8a49e733dcd23674aa6202870d54bf5600d (diff)
downloadlinux-ff57698a9610fcf7d9c4469bf68c881eff22e2f8.tar.xz
powerpc: Fix update form addressing in inline assembly
In several places, inline assembly uses the "%Un" modifier to enable the use of instruction with update form addressing, but the associated "<>" constraint is missing. As mentioned in previous patch, this fails with gcc 4.9, so "<>" can't be used directly. Use UPD_CONSTR macro everywhere %Un modifier is used. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/62eab5ca595485c192de1765bdac099f633a21d0.1603358942.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
-rw-r--r--arch/powerpc/kvm/powerpc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 13999123b735..cf52d26f49cd 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1087,7 +1087,7 @@ static inline u64 sp_to_dp(u32 fprs)
preempt_disable();
enable_kernel_fp();
- asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m" (fprd) : "m" (fprs)
+ asm ("lfs%U1%X1 0,%1; stfd%U0%X0 0,%0" : "=m"UPD_CONSTR (fprd) : "m"UPD_CONSTR (fprs)
: "fr0");
preempt_enable();
return fprd;
@@ -1099,7 +1099,7 @@ static inline u32 dp_to_sp(u64 fprd)
preempt_disable();
enable_kernel_fp();
- asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m" (fprs) : "m" (fprd)
+ asm ("lfd%U1%X1 0,%1; stfs%U0%X0 0,%0" : "=m"UPD_CONSTR (fprs) : "m"UPD_CONSTR (fprd)
: "fr0");
preempt_enable();
return fprs;