Example #1
0
static void audit_mappings(struct kvm_vcpu *vcpu, u64 *sptep, int level)
{
	struct kvm_mmu_page *sp;
	gfn_t gfn;
	pfn_t pfn;
	hpa_t hpa;

	sp = page_header(__pa(sptep));

	if (sp->unsync) {
		if (level != PT_PAGE_TABLE_LEVEL) {
			audit_printk(vcpu->kvm, "unsync sp: %p "
				     "level = %d\n", sp, level);
			return;
		}
	}

	if (!is_shadow_present_pte(*sptep) || !is_last_spte(*sptep, level))
		return;

	gfn = kvm_mmu_page_get_gfn(sp, sptep - sp->spt);
	pfn = gfn_to_pfn_atomic(vcpu->kvm, gfn);

	if (is_error_pfn(pfn)) {
		kvm_release_pfn_clean(pfn);
		return;
	}

	hpa =  pfn << PAGE_SHIFT;
	if ((*sptep & PT64_BASE_ADDR_MASK) != hpa)
		audit_printk(vcpu->kvm, "levels %d pfn %llx hpa %llx "
			     "ent %llxn", vcpu->arch.mmu.root_level, pfn,
			     hpa, *sptep);
}
Example #2
0
static void __mmu_spte_walk(struct vmmr0_vcpu *vcpu, struct vmmr0_mmu_page *sp,
			    inspect_spte_fn fn, int level)
{
	int i;

	for (i = 0; i < PT64_ENT_PER_PAGE; ++i) {
		u64 *ent = sp->spt;

		fn(vcpu, ent + i, level);

		if (is_shadow_present_pte(ent[i]) &&
		      !is_last_spte(ent[i], level)) {
			struct vmmr0_mmu_page *child;

			child = page_header(ent[i] & PT64_BASE_ADDR_MASK);
			__mmu_spte_walk(vcpu, child, fn, level - 1);
		}
	}
}
Example #3
0
static void audit_sptes_have_rmaps(struct vmmr0_vcpu *vcpu, u64 *sptep, int level)
{
	if (is_shadow_present_pte(*sptep) && is_last_spte(*sptep, level))
		inspect_spte_has_rmap(vcpu->vmmr0, sptep);
}