From: Jim Mattson <jmattson@google.com>
Date: Thu, 14 Sep 2017 16:31:40 -0700
Subject: kvm: nVMX: Remove nested_vmx_succeed after successful VM-entry
Patch-mainline: v4.14-rc1
Git-commit: 7881f96cac4d420c94e62a4e1eea243899a7052e
References: bsc#1077761
After a successful VM-entry, RFLAGS is cleared, with the exception of
bit 1, which is always set. This is handled by load_vmcs12_host_state.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
---
arch/x86/kvm/vmx.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -11474,16 +11474,18 @@
*/
kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
- /*
- * Exiting from L2 to L1, we're now back to L1 which thinks it just
- * finished a VMLAUNCH or VMRESUME instruction, so we need to set the
- * success or failure flag accordingly.
- */
if (unlikely(vmx->fail)) {
+ /*
+ * After an early L2 VM-entry failure, we're now back
+ * in L1 which thinks it just finished a VMLAUNCH or
+ * VMRESUME instruction, so we need to set the failure
+ * flag and the VM-instruction error field of the VMCS
+ * accordingly.
+ */
vmx->fail = 0;
nested_vmx_failValid(vcpu, vm_inst_error);
- } else
- nested_vmx_succeed(vcpu);
+ }
+
if (enable_shadow_vmcs)
vmx->nested.sync_shadow_vmcs = true;