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[v4,59/66] i386/tdx: LMCE is not supported for TDX

Message ID 20240125032328.2522472-60-xiaoyao.li@intel.com (mailing list archive)
State New, archived
Headers show
Series QEMU Guest memfd + QEMU TDX support | expand

Commit Message

Xiaoyao Li Jan. 25, 2024, 3:23 a.m. UTC 
LMCE is not supported TDX since KVM doesn't provide emulation for
MSR_IA32_FEAT_CTL.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
 target/i386/kvm/kvm-cpu.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/target/i386/kvm/kvm-cpu.c b/target/i386/kvm/kvm-cpu.c
index 9c791b7b0520..8c618869533c 100644
--- a/target/i386/kvm/kvm-cpu.c
+++ b/target/i386/kvm/kvm-cpu.c
@@ -15,6 +15,7 @@ 
 #include "sysemu/sysemu.h"
 #include "hw/boards.h"
 
+#include "tdx.h"
 #include "kvm_i386.h"
 #include "hw/core/accel-cpu.h"
 
@@ -60,6 +61,10 @@  static bool lmce_supported(void)
     if (kvm_ioctl(kvm_state, KVM_X86_GET_MCE_CAP_SUPPORTED, &mce_cap) < 0) {
         return false;
     }
+
+    if (is_tdx_vm())
+        return false;
+
     return !!(mce_cap & MCG_LMCE_P);
 }