KVM: MMU: audit: check whether have unsync sps after root sync
After root synced, all unsync sps are synced, this patch add a check to make
sure it's no unsync sps in VCPU's page table
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index afde64b..ba7e764 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -53,14 +53,18 @@
AUDIT_PRE_PAGE_FAULT,
AUDIT_POST_PAGE_FAULT,
AUDIT_PRE_PTE_WRITE,
- AUDIT_POST_PTE_WRITE
+ AUDIT_POST_PTE_WRITE,
+ AUDIT_PRE_SYNC,
+ AUDIT_POST_SYNC
};
char *audit_point_name[] = {
"pre page fault",
"post page fault",
"pre pte write",
- "post pte write"
+ "post pte write",
+ "pre sync",
+ "post sync"
};
#undef MMU_DEBUG
@@ -2516,6 +2520,8 @@
if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
return;
+
+ trace_kvm_mmu_audit(vcpu, AUDIT_PRE_SYNC);
if (vcpu->arch.mmu.root_level == PT64_ROOT_LEVEL) {
hpa_t root = vcpu->arch.mmu.root_hpa;
sp = page_header(root);
@@ -2531,6 +2537,7 @@
mmu_sync_children(vcpu, sp);
}
}
+ trace_kvm_mmu_audit(vcpu, AUDIT_POST_SYNC);
}
void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu)