Commit 010c520e authored Oct 11, 2010 by Avi Kivity

KVM: Don't reset mmu context unnecessarily when updating EFER



The only bit of EFER that affects the mmu is NX, and this is already
accounted for (LME only takes effect when changing cr0).

Based on a patch by Hillf Danton.

Signed-off-by: Avi Kivity <avi@redhat.com>

parent d0dfc6b7

arch/x86/kvm/x86.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -830,7 +830,6 @@ static int set_efer(struct kvm_vcpu *vcpu, u64 efer)
		kvm_x86_ops->set_efer(vcpu, efer);

		vcpu->arch.mmu.base_role.nxe = (efer & EFER_NX) && !tdp_enabled;
		kvm_mmu_reset_context(vcpu);

		/* Update reserved bits */
		if ((efer ^ old_efer) & EFER_NX)