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authorChristian Borntraeger <borntraeger@de.ibm.com>2012-02-06 10:59:02 +0100
committerAvi Kivity <avi@redhat.com>2012-03-08 14:10:13 +0200
commit851755871c1f3184f4124c466e85881f17fa3226 (patch)
treebd65d3f5f13b7897420724ae22ed2c6c76fbc902
parent6dbf79e7164e9a86c1e466062c48498142ae6128 (diff)
KVM: s390: Sanitize fpc registers for KVM_SET_FPU
commit 7eef87dc99e419b1cc051e4417c37e4744d7b661 (KVM: s390: fix register setting) added a load of the floating point control register to the KVM_SET_FPU path. Lets make sure that the fpc is valid. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/s390/kvm/kvm-s390.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 0b91679369bc..121316ef2e15 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -460,7 +460,7 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
memcpy(&vcpu->arch.guest_fpregs.fprs, &fpu->fprs, sizeof(fpu->fprs));
- vcpu->arch.guest_fpregs.fpc = fpu->fpc;
+ vcpu->arch.guest_fpregs.fpc = fpu->fpc & FPC_VALID_MASK;
restore_fp_regs(&vcpu->arch.guest_fpregs);
return 0;
}