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Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kernel/cpu/mshyperv.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 63093870ec33..ff3d9c5de19c 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -420,6 +420,20 @@ static void __init ms_hyperv_init_platform(void) static_branch_enable(&isolation_type_en_snp); } else if (hv_get_isolation_type() == HV_ISOLATION_TYPE_TDX) { static_branch_enable(&isolation_type_tdx); + + /* A TDX VM must use x2APIC and doesn't use lazy EOI. */ + ms_hyperv.hints &= ~HV_X64_APIC_ACCESS_RECOMMENDED; + + if (!ms_hyperv.paravisor_present) { + /* To be supported: more work is required. */ + ms_hyperv.features &= ~HV_MSR_REFERENCE_TSC_AVAILABLE; + + /* HV_REGISTER_CRASH_CTL is unsupported. */ + ms_hyperv.misc_features &= ~HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; + + /* Don't trust Hyper-V's TLB-flushing hypercalls. */ + ms_hyperv.hints &= ~HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; + } } } |