nEPT: Add nEPT violation/misconfigration support

Inject nEPT fault to L1 guest. This patch is original from Xinhao.

Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Xinhao Xu <xinhao.xu@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index f5df0a84e51c..c0efd16bdfa1 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -286,6 +286,7 @@ struct kvm_mmu {
         u64 *pae_root;
         u64 *lm_root;
         u64 rsvd_bits_mask[2][4];
+        u64 bad_mt_xwr;
 
         /*
          * Bitmap: bit set = last pte in walk
@@ -512,6 +513,9 @@ struct kvm_vcpu_arch {
          * instruction.
          */
         bool write_fault_to_shadow_pgtable;
+
+        /* set at EPT violation at this point */
+        unsigned long exit_qualification;
 };
 
 struct kvm_lpage_info {