From 9002494f80b751a7655045c5f46bf90bc1d3bbd0 Mon Sep 17 00:00:00 2001 From: Xiaoyao Li Date: Thu, 8 May 2025 10:59:40 -0400 Subject: [PATCH] i386/tdx: Force exposing CPUID 0x1f TDX uses CPUID 0x1f to configure TD guest's CPU topology. So set enable_cpuid_0x1f for TDs. Signed-off-by: Xiaoyao Li Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-35-xiaoyao.li@intel.com Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 7c5e59c559..accaefb401 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -400,7 +400,11 @@ static int tdx_kvm_type(X86ConfidentialGuest *cg) static void tdx_cpu_instance_init(X86ConfidentialGuest *cg, CPUState *cpu) { + X86CPU *x86cpu = X86_CPU(cpu); + object_property_set_bool(OBJECT(cpu), "pmu", false, &error_abort); + + x86cpu->enable_cpuid_0x1f = true; } static int tdx_validate_attributes(TdxGuest *tdx, Error **errp) -- 2.39.5