linux-kernel - Re: Revisiting XFD-based AMX and heterogenous systems

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Message-ID: <CAJvTdKkUxTYuUp3BjzF-hChEpmRrWB0Ai-xgqdHHvXiD_5b7-Q@mail.gmail.com>
Date:   Tue, 23 Nov 2021 15:24:24 +0100
From:   Len Brown <lenb@...nel.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Arjan van de Ven <arjan@...ux.intel.com>,
        Asit K Mallick <asit.k.mallick@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "Brown, Len" <len.brown@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Bae, Chang Seok" <chang.seok.bae@...el.com>,
        Andrew Cooper <andrew.cooper3@...rix.com>
Subject: Re: Revisiting XFD-based AMX and heterogenous systems

On Tue, Nov 16, 2021 at 1:22 AM Andy Lutomirski <luto@...nel.org> wrote:

> Sure, but I bet the demand will be there.  The desktop gamer types will flip off E cores and flip on AVX512 and call it a day.  But the ones who want battery life will be annoyed, and I bet someone at Intel is contemplating how to switch it at runtime.

The premise of this thread is erroneous.
See Arjan's response.


-- 
Len Brown, Intel Open Source Technology Center