On Sun, Mar 19, 2023 at 04:49:27PM +0800, Binbin Wu wrote: >From: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx> > >LAM feature is enumerated by CPUID.7.1:EAX.LAM[bit 26]. >Expose the feature to guest as the final step after the following Nit: s/guest/userspace/. Because it is QEMU that decides whther or not to expose a feature to guests. >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. > >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> >--- > 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 8f8edeaf8177..13840ef897c7 100644 >--- a/arch/x86/kvm/cpuid.c >+++ b/arch/x86/kvm/cpuid.c >@@ -670,7 +670,7 @@ 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 >
