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authorAvi Kivity <avi@qumranet.com>2007-01-06 03:36:56 +0300
committerLinus Torvalds <torvalds@woody.osdl.org>2007-01-06 10:55:27 +0300
commit37a7d8b046da6254718be1409140cd7bf3126f8f (patch)
treea52e3a60234920301c881b8b534e85ae1bed5cf8 /drivers/kvm/paging_tmpl.h
parent9ede74e0af549d75d4ea870bed8b178983816745 (diff)
downloadlinux-37a7d8b046da6254718be1409140cd7bf3126f8f.tar.xz
[PATCH] KVM: MMU: add audit code to check mappings, etc are correct
Signed-off-by: Avi Kivity <avi@qumranet.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/kvm/paging_tmpl.h')
-rw-r--r--drivers/kvm/paging_tmpl.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index 32b385188454..c894b51ba3f8 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -355,6 +355,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
int r;
pgprintk("%s: addr %lx err %x\n", __FUNCTION__, addr, error_code);
+ kvm_mmu_audit(vcpu, "pre page fault");
r = mmu_topup_memory_caches(vcpu);
if (r)
@@ -402,6 +403,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
pgprintk("%s: io work, no access\n", __FUNCTION__);
inject_page_fault(vcpu, addr,
error_code | PFERR_PRESENT_MASK);
+ kvm_mmu_audit(vcpu, "post page fault (io)");
return 0;
}
@@ -410,10 +412,12 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr,
*/
if (pte_present && !fixed && !write_pt) {
inject_page_fault(vcpu, addr, error_code);
+ kvm_mmu_audit(vcpu, "post page fault (guest)");
return 0;
}
++kvm_stat.pf_fixed;
+ kvm_mmu_audit(vcpu, "post page fault (fixed)");
return write_pt;
}