From: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx> LAM is enumerated by CPUID.7.1:EAX.LAM[bit 26]. Advertise the feature to userspace and enable it as the final step after the LAM virtualization support for supervisor and user pointers. SGX LAM support is not advertised yet. SGX LAM support is enumerated in SGX's own CPUID and there's no hard requirement that it must be supported when LAM is reported in CPUID leaf 0x7. Signed-off-by: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx> Signed-off-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx> Reviewed-by: Jingqi Liu <jingqi.liu@xxxxxxxxx> Reviewed-by: Chao Gao <chao.gao@xxxxxxxxx> Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx> Tested-by: Xuelian Guo <xuelian.guo@xxxxxxxxx> --- arch/x86/kvm/cpuid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 0544e30b4946..a0db266bab73 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -677,7 +677,7 @@ void kvm_set_cpu_caps(void) kvm_cpu_cap_mask(CPUID_7_1_EAX, F(AVX_VNNI) | F(AVX512_BF16) | F(CMPCCXADD) | F(FZRM) | F(FSRS) | F(FSRC) | - F(AMX_FP16) | F(AVX_IFMA) + F(AMX_FP16) | F(AVX_IFMA) | F(LAM) ); kvm_cpu_cap_init_kvm_defined(CPUID_7_1_EDX, -- 2.25.1
