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Commit 3ea3aa8c authored by Sheng Yang's avatar Sheng Yang Committed by Avi Kivity
Browse files

KVM: Fix OSXSAVE after migration 



CPUID's OSXSAVE is a mirror of CR4.OSXSAVE bit. We need to update the CPUID
after migration.

KVM-Stable-Tag.
Signed-off-by: default avatarSheng Yang <sheng@linux.intel.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 6313e3c2

arch/x86/kvm/x86.c

+2 −0
Original line number Diff line number Diff line
@@ -5522,6 +5522,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 


	mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4;

	kvm_x86_ops->set_cr4(vcpu, sregs->cr4);

	if (sregs->cr4 & X86_CR4_OSXSAVE)

		update_cpuid(vcpu);

	if (!is_long_mode(vcpu) && is_pae(vcpu)) {

		load_pdptrs(vcpu, vcpu->arch.walk_mmu, vcpu->arch.cr3);

		mmu_reset_needed = 1;