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[PATCH v6 44/60] i386/tdx: Skip kvm_put_apicbase() for TDs
From: |
Xiaoyao Li |
Subject: |
[PATCH v6 44/60] i386/tdx: Skip kvm_put_apicbase() for TDs |
Date: |
Tue, 5 Nov 2024 01:23:52 -0500 |
KVM doesn't allow wirting to MSR_IA32_APICBASE for TDs.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
---
target/i386/kvm/kvm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 8909fce14909..c39e879a77e9 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -3627,6 +3627,11 @@ void kvm_put_apicbase(X86CPU *cpu, uint64_t value)
{
int ret;
+ /* TODO: Allow accessing guest state for debug TDs. */
+ if (is_tdx_vm()) {
+ return;
+ }
+
ret = kvm_put_one_msr(cpu, MSR_IA32_APICBASE, value);
assert(ret == 1);
}
--
2.34.1
- [PATCH v6 36/60] i386/tdx: Force exposing CPUID 0x1f, (continued)
[PATCH v6 46/60] i386/cgs: Rename *mask_cpuid_features() to *adjust_cpuid_features(), Xiaoyao Li, 2024/11/05
[PATCH v6 42/60] i386/tdx: Don't synchronize guest tsc for TDs, Xiaoyao Li, 2024/11/05
[PATCH v6 44/60] i386/tdx: Skip kvm_put_apicbase() for TDs,
Xiaoyao Li <=
[PATCH v6 47/60] i386/tdx: Implement adjust_cpuid_features() for TDX, Xiaoyao Li, 2024/11/05
[PATCH v6 49/60] i386/tdx: Mask off CPUID bits by unsupported TD Attributes, Xiaoyao Li, 2024/11/05
[PATCH v6 50/60] i386/cpu: Move CPUID_XSTATE_XSS_MASK to header file and introduce CPUID_XSTATE_MASK, Xiaoyao Li, 2024/11/05
[PATCH v6 52/60] i386/cpu: Expose mark_unavailable_features() for TDX, Xiaoyao Li, 2024/11/05
[PATCH v6 54/60] i386/cgs: Introduce x86_confidential_guest_check_features(), Xiaoyao Li, 2024/11/05
[PATCH v6 51/60] i386/tdx: Mask off CPUID bits by unsupported XFAM, Xiaoyao Li, 2024/11/05
[PATCH v6 55/60] i386/tdx: Fetch and validate CPUID of TD guest, Xiaoyao Li, 2024/11/05
[PATCH v6 56/60] i386/tdx: Don't treat SYSCALL as unavailable, Xiaoyao Li, 2024/11/05