On 12/8/21 01:03, Yang Zhong wrote:
--- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -219,6 +219,11 @@ static void kvm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu) kvm_apic_set_version(vcpu); }+ /* Enable saving guest XFD_ERR */+ best = kvm_find_cpuid_entry(vcpu, 7, 0); + if (best && cpuid_entry_has(best, X86_FEATURE_AMX_TILE)) + vcpu->arch.guest_fpu.xfd_err = 0; +
This is incorrect. Instead it should check whether leaf 0xD includes any dynamic features.
Paolo
