From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAA4DC433ED for ; Sun, 11 Apr 2021 23:21:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81F5D61206 for ; Sun, 11 Apr 2021 23:21:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235611AbhDKXVw (ORCPT ); Sun, 11 Apr 2021 19:21:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235229AbhDKXVu (ORCPT ); Sun, 11 Apr 2021 19:21:50 -0400 Received: from mail-ej1-x634.google.com (mail-ej1-x634.google.com [IPv6:2a00:1450:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64F9CC061574 for ; Sun, 11 Apr 2021 16:21:33 -0700 (PDT) Received: by mail-ej1-x634.google.com with SMTP id u17so17262183ejk.2 for ; Sun, 11 Apr 2021 16:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amacapital-net.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=kOV4oCzTeKO+DA448DhGZDKH57V9k69RD8UX+W5GrQw=; b=xp75p+4y3LiZM8+S3YPtJIniiQEvAJV3ACclpLITT7/xhMeJrc+Q4Hz53rIfGXZ4MI MLsSZa9XS+/0xkGF4hxgTDCU3wLmvPQ05XJAlPKkpdYOe7Eu9IBDhaC8a5zENXvw4IOq iPk/VECaTXzOaHWtIyDopVoZxla1pmwl7wGEPU9i/EmlRbdJYIhzE0cLVxFdueZmstim Myx04sO1pNpmjZWN67KWHSq4gIFb1kvqF8Njv0LIZjbbkT8AJ+2pcA9bSqOpeLyMET40 7XDMpy9U3dfoYtgCqvZWgsWqy+sZpGW9osxlAoEYOWhOArrSZxPX0iJxU87EdP4Xvtm9 rEWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=kOV4oCzTeKO+DA448DhGZDKH57V9k69RD8UX+W5GrQw=; b=tPq8D91+xen34tuB4WGwUAl3NwkPNPurcKsPehMWFm3EixTBWVBWuGyrGGIhFwpUkG gIQ5Pnu5rz+xaNQ2ZM7KIdRzTSekfYfdTOKoT3c6Ecsz0v65l/uY4fFBj2+4pPS+kaBZ gOjVcpQVO7R5JVTr+cyhUE+Uy1LXjWEzfNCUeL/2Q5WRJs1X7khKZkDaeUiByDJzAxRi nS4JYL1bYuVLvXArVReR5DC+1J5wg+x8R+qXPwjcmxuKGRlOlyQetbfW3c3OCNw/r2zM GGjOZ8Thid10MqTs3Ap2xeMWLgJp7y5YUBd351uwIjlqCbadY7WT9aym+ZLbi7ntIyDS FmZA== X-Gm-Message-State: AOAM533EjCeXirXfx8RW5zAiWUHSEOh4rjNhb+sFboC0Yf4xggftUCuP chvK7zDNhepEtAzBS8JnckMU9RaQ3dhcysFQoRk5JA== X-Google-Smtp-Source: ABdhPJxjtdtw+2AGwJoxd9f8r05aCVGmtHs9nZ8Y3SeTGk6FjnhIMAJkBPjdTqco5EajS7pVj7lyv4VXZSCGnaYqvmA= X-Received: by 2002:a17:906:4f91:: with SMTP id o17mr25029799eju.503.1618183292216; Sun, 11 Apr 2021 16:21:32 -0700 (PDT) MIME-Version: 1.0 References: <20210411164342.GL3762101@tassilo.jf.intel.com> <20210411170357.GD14022@zn.tnic> In-Reply-To: <20210411170357.GD14022@zn.tnic> From: Andy Lutomirski Date: Sun, 11 Apr 2021 16:21:21 -0700 Message-ID: Subject: Re: [PATCH] x86/msr: Block writes to certain MSRs unconditionally To: Borislav Petkov Cc: Andi Kleen , Thomas Gleixner , Feng Tang , Ingo Molnar , "H . Peter Anvin" , Peter Zijlstra , X86 ML , LKML , "Zhang, Rui" , "Kleen, Andi" , Dave Hansen , Len Brown Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 11, 2021 at 10:04 AM Borislav Petkov 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