Commit 30644b90 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Avi Kivity
Browse files

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

arch/x86/kvm/mmu_audit.c

+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);