Commit 8668a3c4 authored Oct 10, 2007 by Eddie Dong Committed by Avi Kivity Oct 22, 2007

KVM: VMX: Reset mmu context when entering real mode



Resetting an SMP guest will force AP enter real mode (RESET) with
paging enabled in protected mode. While current enter_rmode() can
only handle mode switch from nonpaging mode to real mode which leads
to SMP reboot failure.

Fix by reloading the mmu context on entering real mode.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

parent 1b6269db

drivers/kvm/mmu.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1049,6 +1049,7 @@ int kvm_mmu_reset_context(struct kvm_vcpu *vcpu)
		destroy_kvm_mmu(vcpu);
		return init_kvm_mmu(vcpu);
		}
		EXPORT_SYMBOL_GPL(kvm_mmu_reset_context);

		int kvm_mmu_load(struct kvm_vcpu *vcpu)
		{

drivers/kvm/vmx.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1128,6 +1128,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
		fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs);
		fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs);

		kvm_mmu_reset_context(vcpu);
		init_rmode_tss(vcpu->kvm);
		}

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