The audit can help us to detect the mmu bugs as early as possible, it's also can help us to fix them. It's so useful but the linux distribution is imposable to use it since: - it need enable it by define "AUDIT" macro and compile it - the audit code is very high overload, it lets the guest mostly hung So, this patchset supports to enable/disable it dynamically, it's very low overhead if disable it, and it lowers the audit frequency to assure the guest running. After this patchset, we can enable it by: mount -t debugfs none debugfs echo 1 > debugfs/kvm/mmu-debug disable it by: echo 0 > debugfs/kvm/mmu-debug default, the audit is disabled [PATCH 1/4] KVM: MMU: support disable/enable mmu audit dynamically [PATCH 2/4] KVM: MMU: improve active sp audit [PATCH 3/4] KVM: MMU: improve spte audit [PATCH 4/4] KVM: MMU: lower the aduit frequency -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
