diff mbox series

[v4,11/33] i386: Add feature control MSR dependency when SGX is enabled

Message ID 20210719112136.57018-12-yang.zhong@intel.com
State New
Headers show
Series Qemu SGX virtualization | expand

Commit Message

Yang Zhong July 19, 2021, 11:21 a.m. UTC 
From: Sean Christopherson <sean.j.christopherson@intel.com>

SGX adds multiple flags to FEATURE_CONTROL to enable SGX and Flexible
Launch Control.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
---
 target/i386/kvm/kvm.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index d4bf054ebe..8d017fb5a6 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -1865,6 +1865,11 @@  int kvm_arch_init_vcpu(CPUState *cs)
                                   !!(c->ecx & CPUID_EXT_SMX);
     }
 
+    c = cpuid_find_entry(&cpuid_data.cpuid, 7, 0);
+    if (c && (c->ebx & CPUID_7_0_EBX_SGX)) {
+        has_msr_feature_control = true;
+    }
+
     if (env->mcg_cap & MCG_LMCE_P) {
         has_msr_mcg_ext_ctl = has_msr_feature_control = true;
     }