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Commit 85175587 authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Avi Kivity
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KVM: s390: Sanitize fpc registers for KVM_SET_FPU 



commit 7eef87dc (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: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 6dbf79e7

arch/s390/kvm/kvm-s390.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

}