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i386/tdx: Don't synchronize guest tsc for TDs

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TSC of TDs is not accessible and KVM doesn't allow access of
MSR_IA32_TSC for TDs. To avoid the assert() in kvm_get_tsc, make
kvm_synchronize_all_tsc() noop for TDs,

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Reviewed-by: Connor Kuehl <ckuehl@redhat.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-40-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Isaku Yamahata
2025-05-28 19:35:54 +02:00
committed by Paolo Bonzini
parent bb45580d84
commit 0ed55865b4
1 changed files with 1 additions and 1 deletions
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target/i386/kvm/kvm.c
+1 -1
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@@ -328,7 +328,7 @@ void kvm_synchronize_all_tsc(void)
{
CPUState *cpu;
if (kvm_enabled()) {
if (kvm_enabled() && !is_tdx_vm()) {
CPU_FOREACH(cpu) {
run_on_cpu(cpu, do_kvm_synchronize_tsc, RUN_ON_CPU_NULL);
}