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From:   Len Brown <lenb@kernel.org>
Date:   Fri, 16 Apr 2021 18:10:51 -0400
Message-ID: <CAJvTdKkSt-O6TkxJmE+Q2VCDqc9AzpovbpafsME2NBUqRpHEJw@mail.gmail.com>
Subject: Re: Candidate Linux ABI for Intel AMX and hypothetical new related features
To:     Andy Lutomirski <luto@kernel.org>
Cc:     Willy Tarreau <w@1wt.eu>, Florian Weimer <fweimer@redhat.com>,
        "Bae, Chang Seok" <chang.seok.bae@intel.com>,
        Dave Hansen <dave.hansen@intel.com>, X86 ML <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, linux-abi@vger.kernel.org,
        "libc-alpha@sourceware.org" <libc-alpha@sourceware.org>,
        Rich Felker <dalias@libc.org>, Kyle Huey <me@kylehuey.com>,
        Keno Fischer <keno@juliacomputing.com>
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> 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.