From: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx> LAM feature is enumerated by CPUID.7.1:EAX.LAM[bit 26]. Expose the feature to userspace as the final step after the following supports: - CR4.LAM_SUP virtualization - CR3.LAM_U48 and CR3.LAM_U57 virtualization - Check and untag 64-bit linear address when LAM applies in instruction emulations and VMExit handlers. LAM support in SGX enclave mode needs additional enabling and is not included in this patch series. 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> 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 241f554f1764..166243fb5705 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -643,7 +643,7 @@ 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
