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[PATCH v1 36/40] i386/tdx: Don't synchronize guest tsc for TDs
From: |
Xiaoyao Li |
Subject: |
[PATCH v1 36/40] i386/tdx: Don't synchronize guest tsc for TDs |
Date: |
Tue, 2 Aug 2022 15:47:46 +0800 |
From: Isaku Yamahata <isaku.yamahata@intel.com>
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>
---
target/i386/kvm/kvm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 8c282122ed67..8999f64eeaf1 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -270,7 +270,7 @@ 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);
}
--
2.27.0
- [PATCH v1 28/40] i386/tdx: Add TDVF memory via KVM_TDX_INIT_MEM_REGION, (continued)
- [PATCH v1 28/40] i386/tdx: Add TDVF memory via KVM_TDX_INIT_MEM_REGION, Xiaoyao Li, 2022/08/02
- [PATCH v1 25/40] i386/tdx: Track RAM entries for TDX VM, Xiaoyao Li, 2022/08/02
- [PATCH v1 23/40] i386/tdx: Don't initialize pc.rom for TDX VMs, Xiaoyao Li, 2022/08/02
- [PATCH v1 33/40] i386/tdx: Don't allow system reset for TDX VMs, Xiaoyao Li, 2022/08/02
- [PATCH v1 29/40] i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu, Xiaoyao Li, 2022/08/02
- [PATCH v1 30/40] i386/tdx: Finalize TDX VM, Xiaoyao Li, 2022/08/02
- [PATCH v1 24/40] i386/tdx: Track mem_ptr for each firmware entry of TDVF, Xiaoyao Li, 2022/08/02
- [PATCH v1 34/40] hw/i386: add eoi_intercept_unsupported member to X86MachineState, Xiaoyao Li, 2022/08/02
- [PATCH v1 36/40] i386/tdx: Don't synchronize guest tsc for TDs,
Xiaoyao Li <=
- [PATCH v1 38/40] i386/tdx: Skip kvm_put_apicbase() for TDs, Xiaoyao Li, 2022/08/02
- [PATCH v1 35/40] hw/i386: add option to forcibly report edge trigger in acpi tables, Xiaoyao Li, 2022/08/02
- [PATCH v1 37/40] i386/tdx: Only configure MSR_IA32_UCODE_REV in kvm_init_msrs() for TDs, Xiaoyao Li, 2022/08/02
- [PATCH v1 39/40] i386/tdx: Don't get/put guest state for TDX VMs, Xiaoyao Li, 2022/08/02
- [PATCH v1 40/40] docs: Add TDX documentation, Xiaoyao Li, 2022/08/02