The audit is very high overhead, so we need lower the frequency to assure the guest running
Signed-off-by: Xiao Guangrong <[email protected]> --- arch/x86/kvm/mmu_debug.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/mmu_debug.c b/arch/x86/kvm/mmu_debug.c index c4ebe6a..bc61b3d 100644 --- a/arch/x86/kvm/mmu_debug.c +++ b/arch/x86/kvm/mmu_debug.c @@ -18,6 +18,7 @@ */ #include <linux/debugfs.h> +#include <linux/ratelimit.h> static struct dentry *debugfs_file; static bool mmu_debug; @@ -233,6 +234,11 @@ static void audit_vcpu_spte(struct kvm_vcpu *vcpu) static void kvm_mmu_audit(void *ignore, struct kvm_vcpu *vcpu, const char *msg) { + static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 10); + + if (!__ratelimit(&ratelimit_state)) + return; + audit_msg = msg; audit_all_active_sps(vcpu->kvm); audit_vcpu_spte(vcpu); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
