diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-06-11 12:07:42 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:56 +0300 |
| commit | 94d8b056a20bac4f9905d6dafcf7b7005207684a (patch) | |
| tree | 8ab6678b7c9e8372a314f88a0b61572c19a3b992 /arch/x86/kvm/mmu.c | |
| parent | 4d88954d6246d7d43bb8903981731002179f1a1c (diff) | |
KVM: MMU: add kvm_mmu_get_spte_hierarchy helper
Required by EPT misconfiguration handler.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index e18f65bf2de..12974de88aa 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3038,6 +3038,24 @@ out: return r; } +int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]) +{ + struct kvm_shadow_walk_iterator iterator; + int nr_sptes = 0; + + spin_lock(&vcpu->kvm->mmu_lock); + for_each_shadow_entry(vcpu, addr, iterator) { + sptes[iterator.level-1] = *iterator.sptep; + nr_sptes++; + if (!is_shadow_present_pte(*iterator.sptep)) + break; + } + spin_unlock(&vcpu->kvm->mmu_lock); + + return nr_sptes; +} +EXPORT_SYMBOL_GPL(kvm_mmu_get_spte_hierarchy); + #ifdef AUDIT static const char *audit_msg; |