linux-kernel - Re: [PATCH] x86/msr: Block writes to certain MSRs unconditionally

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Message-ID: <CALCETrX-WvuK0hC21Zes6auU9gM702wd0fV2FyP9ha-ma3=71g@mail.gmail.com>
Date:   Sun, 11 Apr 2021 16:21:21 -0700
From:   Andy Lutomirski <luto@...capital.net>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Feng Tang <feng.tang@...el.com>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>, X86 ML <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        "Kleen, Andi" <andi.kleen@...el.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Len Brown <len.brown@...el.com>
Subject: Re: [PATCH] x86/msr: Block writes to certain MSRs unconditionally

On Sun, Apr 11, 2021 at 10:04 AM Borislav Petkov <bp@...en8.de> wrote:
>
> On Sun, Apr 11, 2021 at 09:57:20AM -0700, Andy Lutomirski wrote:
> > Working around a kernel bug. The workaround only worked on AMD
> > systems. The correct solution was to fix the kernel bug, not poke
> > MSRs.
>
> Do you remember which program(s) and where I can get them to have a
> look?
>

https://bugs.winehq.org/show_bug.cgi?id=33275#c19

I sure hope no one is still doing this.

--Andy