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[RFC PATCH v4 33/36] i386/tdx: Only configure MSR_IA32_UCODE_REV in kvm_
From: |
Xiaoyao Li |
Subject: |
[RFC PATCH v4 33/36] i386/tdx: Only configure MSR_IA32_UCODE_REV in kvm_init_msrs() for TDs |
Date: |
Thu, 12 May 2022 11:18:00 +0800 |
For TDs, only MSR_IA32_UCODE_REV in kvm_init_msrs() can be configured
by VMM, while the features enumerated/controlled by other MSRs except
MSR_IA32_UCODE_REV in kvm_init_msrs() are not under control of VMM.
Only configure MSR_IA32_UCODE_REV for TDs.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
target/i386/kvm/kvm.c | 44 ++++++++++++++++++++++---------------------
1 file changed, 23 insertions(+), 21 deletions(-)
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index c79dbff747e8..9c5bf075b542 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -3125,32 +3125,34 @@ static void kvm_init_msrs(X86CPU *cpu)
CPUX86State *env = &cpu->env;
kvm_msr_buf_reset(cpu);
- if (has_msr_arch_capabs) {
- kvm_msr_entry_add(cpu, MSR_IA32_ARCH_CAPABILITIES,
- env->features[FEAT_ARCH_CAPABILITIES]);
- }
-
- if (has_msr_core_capabs) {
- kvm_msr_entry_add(cpu, MSR_IA32_CORE_CAPABILITY,
- env->features[FEAT_CORE_CAPABILITY]);
- }
-
- if (has_msr_perf_capabs && cpu->enable_pmu) {
- kvm_msr_entry_add_perf(cpu, env->features);
+
+ if (!is_tdx_vm()) {
+ if (has_msr_arch_capabs) {
+ kvm_msr_entry_add(cpu, MSR_IA32_ARCH_CAPABILITIES,
+ env->features[FEAT_ARCH_CAPABILITIES]);
+ }
+
+ if (has_msr_core_capabs) {
+ kvm_msr_entry_add(cpu, MSR_IA32_CORE_CAPABILITY,
+ env->features[FEAT_CORE_CAPABILITY]);
+ }
+
+ if (has_msr_perf_capabs && cpu->enable_pmu) {
+ kvm_msr_entry_add_perf(cpu, env->features);
+ }
+
+ /*
+ * Older kernels do not include VMX MSRs in KVM_GET_MSR_INDEX_LIST, but
+ * all kernels with MSR features should have them.
+ */
+ if (kvm_feature_msrs && cpu_has_vmx(env)) {
+ kvm_msr_entry_add_vmx(cpu, env->features);
+ }
}
if (has_msr_ucode_rev) {
kvm_msr_entry_add(cpu, MSR_IA32_UCODE_REV, cpu->ucode_rev);
}
-
- /*
- * Older kernels do not include VMX MSRs in KVM_GET_MSR_INDEX_LIST, but
- * all kernels with MSR features should have them.
- */
- if (kvm_feature_msrs && cpu_has_vmx(env)) {
- kvm_msr_entry_add_vmx(cpu, env->features);
- }
-
assert(kvm_buf_set_msrs(cpu) == 0);
}
--
2.27.0
- Re: [RFC PATCH v4 23/36] i386/tdx: Setup the TD HOB list, (continued)
- [RFC PATCH v4 27/36] i386/tdx: Disable SMM for TDX VMs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 29/36] i386/tdx: Don't allow system reset for TDX VMs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 30/36] hw/i386: add eoi_intercept_unsupported member to X86MachineState, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 26/36] i386/tdx: Finalize TDX VM, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 28/36] i386/tdx: Disable PIC for TDX VMs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 33/36] i386/tdx: Only configure MSR_IA32_UCODE_REV in kvm_init_msrs() for TDs,
Xiaoyao Li <=
- [RFC PATCH v4 35/36] i386/tdx: Don't get/put guest state for TDX VMs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 32/36] i386/tdx: Don't synchronize guest tsc for TDs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 34/36] i386/tdx: Skip kvm_put_apicbase() for TDs, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 31/36] hw/i386: add option to forcibly report edge trigger in acpi tables, Xiaoyao Li, 2022/05/11
- [RFC PATCH v4 36/36] docs: Add TDX documentation, Xiaoyao Li, 2022/05/11