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authorThomas Huth <thuth@linux.vnet.ibm.com>2013-06-12 13:54:57 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2013-06-17 17:10:38 +0200
commitaeb87c3cb7416d4d5931bc939cc083c731479de0 (patch)
tree9b7163fe8f2ba9f580abed36576397b409f5a3e8 /arch/s390
parentb764bb1c50c279b95a486d338418f7fda74fff71 (diff)
downloadop-kernel-dev-aeb87c3cb7416d4d5931bc939cc083c731479de0.zip
op-kernel-dev-aeb87c3cb7416d4d5931bc939cc083c731479de0.tar.gz
KVM: s390: Fix epsw instruction decoding
The handle_epsw() function calculated the first register in the wrong way, so that it always used r0 by mistake. Now the code uses the common helper function for decoding the registers of rre functions instead to avoid such mistakes. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kvm/priv.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index bda9c9b..a0c63d7 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -457,8 +457,7 @@ static int handle_epsw(struct kvm_vcpu *vcpu)
{
int reg1, reg2;
- reg1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 24;
- reg2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
+ kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);
/* This basically extracts the mask half of the psw. */
vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000;
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