From 0fe5ae12f6e427821edddf3bb1618aa0576f73cb Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 18 Jul 2025 18:03:48 +0200 Subject: [PATCH 082/115] i386/tdx: Make invtsc default on RH-Author: Paolo Bonzini RH-MergeRequest: 391: TDX support, including attestation and device assignment RH-Jira: RHEL-15710 RHEL-20798 RHEL-49728 RH-Acked-by: Yash Mankad RH-Acked-by: Peter Xu RH-Acked-by: David Hildenbrand RH-Commit: [82/115] 24e58b9f91fca93c4e17de19592f4e232abee39a (bonzini/rhel-qemu-kvm) Because it's fixed1 bit that enforced by TDX module. Signed-off-by: Xiaoyao Li Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-54-xiaoyao.li@intel.com Signed-off-by: Paolo Bonzini (cherry picked from commit ea4867b911fc2f6d4c8bd50ec62f0dc0fa190fab) Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 3e23010094..3ec31d4872 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -742,6 +742,9 @@ static void tdx_cpu_instance_init(X86ConfidentialGuest *cg, CPUState *cpu) object_property_set_bool(OBJECT(cpu), "pmu", false, &error_abort); + /* invtsc is fixed1 for TD guest */ + object_property_set_bool(OBJECT(cpu), "invtsc", true, &error_abort); + x86cpu->enable_cpuid_0x1f = true; } -- 2.50.1