* [PATCH][RESEND] VMX: Properly return error to userspace on vmentry failure
@ 2010-05-31 19:40 Mohammed Gamal
2010-06-02 15:58 ` Marcelo Tosatti
0 siblings, 1 reply; 2+ messages in thread
From: Mohammed Gamal @ 2010-05-31 19:40 UTC (permalink / raw)
To: avi; +Cc: mtosatti, kvm, Mohammed Gamal
The vmexit handler returns KVM_EXIT_UNKNOWN since there is no handler
for vmentry failures. This intercepts vmentry failures and returns
KVM_FAIL_ENTRY to userspace instead.
Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com>
---
arch/x86/kvm/vmx.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 0e561a5..1b6a3be 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3668,6 +3668,13 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
if (enable_ept && is_paging(vcpu))
vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
+ if (exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY) {
+ vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
+ vcpu->run->fail_entry.hardware_entry_failure_reason
+ = exit_reason;
+ return 0;
+ }
+
if (unlikely(vmx->fail)) {
vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
vcpu->run->fail_entry.hardware_entry_failure_reason
--
1.7.0.4
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2010-05-31 19:40 [PATCH][RESEND] VMX: Properly return error to userspace on vmentry failure Mohammed Gamal
2010-06-02 15:58 ` Marcelo Tosatti
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