[PATCH] target/i386: Raise the highest index value used for any VMCS encoding

[Lei Wang]

Because the index value of the VMCS field encoding of Secondary VM-exit
controls, 0x44, is larger than any existing index value, raise the highest
index value used for any VMCS encoding to 0x44.

Because the index value of the VMCS field encoding of FRED injected-event
data (one of the newly added VMCS fields for FRED transitions), 0x52, is
larger than any existing index value, raise the highest index value used
for any VMCS encoding to 0x52.

Co-developed-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Lei Wang <lei4.wang@intel.com>
---
 target/i386/cpu.h     | 1 +
 target/i386/kvm/kvm.c | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index c6cc035df3..5604cc2994 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -1192,6 +1192,7 @@ uint64_t x86_cpu_get_supported_feature_word(X86CPU *cpu, 
FeatureWord w);
 #define VMX_VM_EXIT_PT_CONCEAL_PIP                  0x01000000
 #define VMX_VM_EXIT_CLEAR_IA32_RTIT_CTL             0x02000000
 #define VMX_VM_EXIT_LOAD_IA32_PKRS                  0x20000000
+#define VMX_VM_EXIT_ACTIVATE_SECONDARY_CONTROLS     0x80000000
 
 #define VMX_VM_ENTRY_LOAD_DEBUG_CONTROLS            0x00000004
 #define VMX_VM_ENTRY_IA32E_MODE                     0x00000200
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index b4aab9a410..7c8cb16675 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -3694,7 +3694,14 @@ static void kvm_msr_entry_add_vmx(X86CPU *cpu, 
FeatureWordArray f)
     kvm_msr_entry_add(cpu, MSR_IA32_VMX_CR4_FIXED0,
                       CR4_VMXE_MASK);
 
-    if (f[FEAT_VMX_SECONDARY_CTLS] & VMX_SECONDARY_EXEC_TSC_SCALING) {
+    if (f[FEAT_7_1_EAX] & CPUID_7_1_EAX_FRED) {
+        /* FRED injected-event data (0x2052).  */
+        kvm_msr_entry_add(cpu, MSR_IA32_VMX_VMCS_ENUM, 0x52);
+    } else if (f[FEAT_VMX_EXIT_CTLS] &
+               VMX_VM_EXIT_ACTIVATE_SECONDARY_CONTROLS) {
+        /* Secondary VM-exit controls (0x2044).  */
+        kvm_msr_entry_add(cpu, MSR_IA32_VMX_VMCS_ENUM, 0x44);
+    } else if (f[FEAT_VMX_SECONDARY_CTLS] & VMX_SECONDARY_EXEC_TSC_SCALING) {
         /* TSC multiplier (0x2032).  */
         kvm_msr_entry_add(cpu, MSR_IA32_VMX_VMCS_ENUM, 0x32);
     } else {
-- 
2.39.3