Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

KVM: MMU: Fix auditing code

Browse source 
Fix build breakage of hpa lookup in audit_mappings_page. Moreover, make
this function robust against shadow_notrap_nonpresent_pte entries.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka 2009-04-25 12:43:21 +02:00 committed by Avi Kivity
parent 43890ae8bc
commit 3438253926
1 changed files with 5 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
arch/x86/kvm/mmu.c
View file

@ -3029,11 +3029,13 @@ static void audit_mappings_page(struct kvm_vcpu *vcpu, u64 page_pte,
" in nonleaf level: levels %d gva %lx"
" level %d pte %llx\n", audit_msg,
vcpu->arch.mmu.root_level, va, level, ent);
audit_mappings_page(vcpu, ent, va, level - 1);
else
audit_mappings_page(vcpu, ent, va, level - 1);
} else {
gpa_t gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, va);
hpa_t hpa = (hpa_t)gpa_to_pfn(vcpu, gpa) << PAGE_SHIFT;
gfn_t gfn = gpa >> PAGE_SHIFT;
pfn_t pfn = gfn_to_pfn(vcpu->kvm, gfn);
hpa_t hpa = (hpa_t)pfn << PAGE_SHIFT;
if (is_shadow_present_pte(ent)
&& (ent & PT64_BASE_ADDR_MASK) != hpa)