From: Sean Christopherson <sean.j.christopherson@intel.com>
Date: Mon, 19 Jul 2021 11:21:18 +0000 (+0800)
Subject: Adjust min CPUID level to 0x12 when SGX is enabled
X-Git-Tag: v6.2.0-rc0~79^2~17
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dca6cffc550a3243ba8d106dd02b411342e58782;p=thirdparty%2Fqemu.git

Adjust min CPUID level to 0x12 when SGX is enabled

SGX capabilities are enumerated through CPUID_0x12.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20210719112136.57018-16-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index de58599a3db..cacec605bf1 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6154,6 +6154,11 @@ void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
         if (sev_enabled()) {
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001F);
         }
+
+        /* SGX requires CPUID[0x12] for EPC enumeration */
+        if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SGX) {
+            x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0x12);
+        }
     }
 
     /* Set cpuid_*level* based on cpuid_min_*level, if not explicitly set */