Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx> On Sat, Oct 7, 2017 at 7:35 PM, Wanpeng Li <kernellwp@xxxxxxxxx> wrote: > From: Wanpeng Li <wanpeng.li@xxxxxxxxxxx> > > SDM section 2.6 mentioned: > > After reset, all bits (except bit 0) in XCR0 are cleared to zero; XCR0[0] is set to 1. > > This patch sets XCRO to the 0x1 after vCPU reset. > > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx> > Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx> > --- > arch/x86/kvm/x86.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index b0d2915..c784cd6 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -7816,6 +7816,8 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) > vcpu->arch.regs_avail = ~0; > vcpu->arch.regs_dirty = ~0; > > + vcpu->arch.xcr0 = XFEATURE_MASK_FP; > + > kvm_x86_ops->vcpu_reset(vcpu, init_event); > } > > -- > 2.7.4 >
