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Commit e7fc6f93 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
Browse files

KVM: VMX: Check for automatic switch msr table overflow 



Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent d7cd9796

arch/x86/kvm/vmx.c

+5 −1
Original line number Diff line number Diff line
@@ -1280,7 +1280,11 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr, 
		if (m->guest[i].index == msr)

			break;



	if (i == m->nr) {

	if (i == NR_AUTOLOAD_MSRS) {

		printk_once(KERN_WARNING"Not enough mst switch entries. "

				"Can't add msr %x\n", msr);

		return;

	} else if (i == m->nr) {

		++m->nr;

		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr);

		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr);