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| author |   Thomas Huth <thuth@linux.vnet.ibm.com> | 2013-06-12 13:54:57 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2013-06-17 17:10:38 +0200 |
| commit | aeb87c3cb7416d4d5931bc939cc083c731479de0 (patch) | |
| tree | 9b7163fe8f2ba9f580abed36576397b409f5a3e8 /arch/s390/kvm/priv.c | |
| parent | KVM: s390,perf: Detect if perf samples belong to KVM host or guest (diff) | |
| download | linux-dev-aeb87c3cb7416d4d5931bc939cc083c731479de0.tar.xz linux-dev-aeb87c3cb7416d4d5931bc939cc083c731479de0.zip | |
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/kvm/priv.c')
| -rw-r--r-- | arch/s390/kvm/priv.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index bda9c9b494f0..a0c63d79431b 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, ®1, ®2); /* This basically extracts the mask half of the psw. */ vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000; |