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KVM: MMU audit: largepage handling 

Make the audit code aware of largepages.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2009-06-10 12:27:08 -03:00 committed by Avi Kivity
parent 2aaf65e8c4
commit 2920d72857
1 changed files with 7 additions and 8 deletions
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15
arch/x86/kvm/mmu.c
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@ -3058,12 +3058,11 @@ static void __mmu_spte_walk(struct kvm *kvm, struct kvm_mmu_page *sp,
u64 ent = sp->spt[i];
if (is_shadow_present_pte(ent)) {
if (sp->role.level > 1 && !is_large_pte(ent)) {
if (!is_last_spte(ent, sp->role.level)) {
struct kvm_mmu_page *child;
child = page_header(ent & PT64_BASE_ADDR_MASK);
__mmu_spte_walk(kvm, child, fn);
}
if (sp->role.level == 1)
} else
fn(kvm, sp, &sp->spt[i]);
}
}
@ -3108,10 +3107,9 @@ static void audit_mappings_page(struct kvm_vcpu *vcpu, u64 page_pte,
continue;
va = canonicalize(va);
if (level > 1) {
if (is_shadow_present_pte(ent))
audit_mappings_page(vcpu, ent, va, level - 1);
} else {
if (is_shadow_present_pte(ent) && !is_last_spte(ent, level))
audit_mappings_page(vcpu, ent, va, level - 1);
else {
gpa_t gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, va);
gfn_t gfn = gpa >> PAGE_SHIFT;
pfn_t pfn = gfn_to_pfn(vcpu->kvm, gfn);
@ -3208,7 +3206,8 @@ void inspect_spte_has_rmap(struct kvm *kvm, struct kvm_mmu_page *sp, u64 *sptep)
return;
}
rmapp = gfn_to_rmap(kvm, rev_sp->gfns[sptep - rev_sp->spt], 0);
rmapp = gfn_to_rmap(kvm, rev_sp->gfns[sptep - rev_sp->spt],
is_large_pte(*sptep));
if (!*rmapp) {
if (!printk_ratelimit())
return;