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

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Message-ID: <CAJvTdKkSt-O6TkxJmE+Q2VCDqc9AzpovbpafsME2NBUqRpHEJw@mail.gmail.com>
Date:   Fri, 16 Apr 2021 18:10:51 -0400
From:   Len Brown <lenb@...nel.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Willy Tarreau <w@....eu>, 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

> I get it.  That does not explain why LDMXCSR and VLDMXCSR cause
> pipelines stalls.

Sorry, I thought this thread was about AMX.
I don't know the answer to your LDMXCSR and VLDMXCSR question.