s390x: sie: Only overwrite r3 if it isn't needed anymore
The lmg overwrites r3 which we later use to reference the fprs and fpc.
Let's do the lmg at the end where overwriting is fine.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
diff --git a/s390x/cpu.S b/s390x/cpu.S
index e2ad56c..82b5e25 100644
--- a/s390x/cpu.S
+++ b/s390x/cpu.S
@@ -81,11 +81,11 @@
stg %r3,__SF_SIE_SAVEAREA(%r15) # save guest register save area
# Load guest's gprs, fprs and fpc
- lmg %r0,%r13,SIE_SAVEAREA_GUEST_GRS(%r3)
.irp i, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
ld \i, \i * 8 + SIE_SAVEAREA_GUEST_FPRS(%r3)
.endr
lfpc SIE_SAVEAREA_GUEST_FPC(%r3)
+ lmg %r0,%r13,SIE_SAVEAREA_GUEST_GRS(%r3)
# Move scb ptr into r14 for the sie instruction
lg %r14,__SF_SIE_CONTROL(%r15)
