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Commit 30644b90 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
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KVM: MMU: lower the aduit frequency



The audit is very high overhead, so we need lower the frequency to assure
the guest is running.

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent eb259186
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+7 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@
 *
 */

#include <linux/ratelimit.h>

static const char *audit_msg;

typedef void (*inspect_spte_fn) (struct kvm_vcpu *vcpu, u64 *sptep, int level);
@@ -228,6 +230,11 @@ static void audit_vcpu_spte(struct kvm_vcpu *vcpu)

static void kvm_mmu_audit(void *ignore, struct kvm_vcpu *vcpu, int audit_point)
{
	static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 10);

	if (!__ratelimit(&ratelimit_state))
		return;

	audit_msg = audit_point_name[audit_point];
	audit_all_active_sps(vcpu->kvm);
	audit_vcpu_spte(vcpu);