On Fri, Jun 20, 2025 at 06:35:04PM +0200, Borislav Petkov wrote: > On Fri, Jun 20, 2025 at 04:53:09PM +0300, Kirill A. Shutemov wrote: > > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h > > index ee176236c2be..4473a6f7800b 100644 > > --- a/arch/x86/include/asm/cpufeatures.h > > +++ b/arch/x86/include/asm/cpufeatures.h > > @@ -313,6 +313,7 @@ > > #define X86_FEATURE_SM4 (12*32+ 2) /* SM4 instructions */ > > #define X86_FEATURE_AVX_VNNI (12*32+ 4) /* "avx_vnni" AVX VNNI instructions */ > > #define X86_FEATURE_AVX512_BF16 (12*32+ 5) /* "avx512_bf16" AVX512 BFLOAT16 instructions */ > > +#define X86_FEATURE_LASS (12*32+ 6) /* "lass" Linear Address Space Separation */ > > This needs to be in /proc/cpuinfo because...? What is current policy around it ? I think it is useful to advertise security features in cpuinfo. LASS fits next to SMAP/SMEP/UMIP. -- Kiryl Shutsemau / Kirill A. Shutemov
