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);
}
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);
}
}
}
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);
}
static int is_rmap_spte(u64 pte)
{
return is_shadow_present_pte(pte);
}