Commit eb5109e3 authored Oct 01, 2009 by Marcelo Tosatti Committed by Avi Kivity Oct 04, 2009

KVM: VMX: flush TLB with INVEPT on cpu migration



It is possible that stale EPTP-tagged mappings are used, if a
vcpu migrates to a different pcpu.

Set KVM_REQ_TLB_FLUSH in vmx_vcpu_load, when switching pcpus, which
will invalidate both VPID and EPT mappings on the next vm-entry.

Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

parent b2d83cfa

arch/x86/kvm/vmx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -709,7 +709,7 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
		if (vcpu->cpu != cpu) {
		vcpu_clear(vmx);
		kvm_migrate_timers(vcpu);
		vpid_sync_vcpu_all(vmx);
		set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
		local_irq_disable();
		list_add(&vmx->local_vcpus_link,
		&per_cpu(vcpus_on_cpu, cpu));