linux-kernel - Re: Candidate Linux ABI for Intel AMX and hypothetical new related features

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Date:   Thu, 15 Apr 2021 07:29:38 +0200
From:   Willy Tarreau <w@....eu>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Len Brown <lenb@...nel.org>, Andy Lutomirski <luto@...nel.org>,
        Florian Weimer <fweimer@...hat.com>,
        "Bae, Chang Seok" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...el.com>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, linux-abi@...r.kernel.org,
        "libc-alpha@...rceware.org" <libc-alpha@...rceware.org>,
        Rich Felker <dalias@...c.org>, Kyle Huey <me@...ehuey.com>,
        Keno Fischer <keno@...iacomputing.com>
Subject: Re: Candidate Linux ABI for Intel AMX and hypothetical new related
 features

On Thu, Apr 15, 2021 at 06:43:43AM +0200, Borislav Petkov wrote:
> On Wed, Apr 14, 2021 at 05:57:22PM -0400, Len Brown wrote:
> > I'm pretty sure that the "it isn't my use case of interest, so it
> > doesn't matter" line of reasoning has long been established as -EINVAL
> > ;-)
> 
> I have only a very faint idea what you're trying to say here. Please
> explain properly and more verbosely what exactly has been established
> where?

What Len is saying is that not being interested in a feature is not an
argument for rejecting its adoption, which I'm perfectly fine with. But
conversely not being interested in a feature is also an argument for
insisting that its adoption doesn't harm other use cases (generally
speaking, not this specific case here).

Willy