[1/2] KVM: x86: Issue smp_call_function_many with preemption disabled

Commit Message

Jan Kiszka Nov. 1, 2010, 1:01 p.m. UTC

None

Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2cfdf2d..0ed6dad 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4012,8 +4012,10 @@  int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu)
 		return X86EMUL_CONTINUE;
 
 	if (kvm_x86_ops->has_wbinvd_exit()) {
+		preempt_disable();
 		smp_call_function_many(vcpu->arch.wbinvd_dirty_mask,
 				wbinvd_ipi, NULL, 1);
+		preempt_enable();
 		cpumask_clear(vcpu->arch.wbinvd_dirty_mask);
 	}
 	wbinvd();