Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits

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To: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
From: Borislav Petkov <bp@xxxxxxxxx>
Date: Fri, 27 Jun 2025 12:43:45 +0200
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Ard Biesheuvel <ardb@xxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxx>, Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, Xiongwei Song <xiongwei.song@xxxxxxxxxxxxx>, Xin Li <xin3.li@xxxxxxxxx>, "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>, Brijesh Singh <brijesh.singh@xxxxxxx>, Michael Roth <michael.roth@xxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Alexey Kardashevskiy <aik@xxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Sohil Mehta <sohil.mehta@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>, Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>, Kai Huang <kai.huang@xxxxxxxxx>, Sandipan Das <sandipan.das@xxxxxxx>, Breno Leitao <leitao@xxxxxxxxxx>, Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Hou Tao <houtao1@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Vegard Nossum <vegard.nossum@xxxxxxxxxx>, Kees Cook <kees@xxxxxxxxxx>, Eric Biggers <ebiggers@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, "Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Luis Chamberlain <mcgrof@xxxxxxxxxx>, Yuntao Wang <ytcoode@xxxxxxxxx>, Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Tejun Heo <tj@xxxxxxxxxx>, Changbin Du <changbin.du@xxxxxxxxxx>, Huang Shijie <shijie@xxxxxxxxxxxxxxxxxxxxxx>, Geert Uytterhoeven <geert+renesas@xxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-efi@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, Yian Chen <yian.chen@xxxxxxxxx>
In-reply-to: <h47uwzno7oqer72sjwyc4spxaduggqi4meccjvai6v42iwnqnh@uhloooww25mo>
References: <20250620163504.GCaFWNuI-8QFqAM0yI@fat_crate.local> <6y2iqv6c2idn7yebaec7tyhzl5zcsrwqq4lcsokumlqeophzaf@ljnmxorblgcj> <20250620182943.GDaFWolxhwogB2tTxb@fat_crate.local> <tmd5llufitosphzhiik2tlemjuwyi7xkcjlhbqhibrgjjhsqcj@b3xtgub42p45> <20250623102105.GCaFkqkatFSbyl1YeN@fat_crate.local> <ztkgdk72p2z3q6z4hslfg4gj6pejirh7cnssxhd7u72mo4enn4@viqrwrycderf> <20250626151837.GFaF1kzfLtesXLqaAQ@fat_crate.local> <20250626160707.GGaF1wK5tW37P6xt0O@fat_crate.local> <2768baad-1b1f-40c2-9cd9-9f4489e14f4d@intel.com> <h47uwzno7oqer72sjwyc4spxaduggqi4meccjvai6v42iwnqnh@uhloooww25mo>

On Fri, Jun 27, 2025 at 01:25:12PM +0300, Kirill A. Shutemov wrote:
> So, we want an entry for SLAM?
> 
> I don't think it is very useful as we don't allow LAM if LASS is missing.

Nah, it is all clear now.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

References:
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Borislav Petkov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Kirill A. Shutemov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Borislav Petkov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Kirill A. Shutemov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Borislav Petkov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Kirill A. Shutemov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Borislav Petkov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Borislav Petkov
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Dave Hansen
- Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits
  - From: Kirill A. Shutemov

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