linux-kernel - Re: [PATCH v2 1/2] x86: Enable x2apic during resume from suspend if used previously

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Message-ID: <878r7imlb0.ffs@tglx>
Date:   Wed, 01 Nov 2023 00:20:03 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Mario Limonciello <mario.limonciello@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Linux kernel regressions list <regressions@...ts.linux.dev>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Sandipan Das <sandipan.das@....com>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-perf-users@...r.kernel.org>,
        "open list:PERFORMANCE EVENTS SUBSYSTEM" 
        <linux-kernel@...r.kernel.org>,
        "open list:SUSPEND TO RAM" <linux-pm@...r.kernel.org>,
        "open list:ACPI" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] x86: Enable x2apic during resume from suspend if
 used previously

On Tue, Oct 31 2023 at 13:53, Mario Limonciello wrote:
> Thank you for looking this over.  I've reviewed it with the internal 
> team and confirmed there was a BIOS bug where the MSR wasn't restored 
> after the S3 cycle completed.  The BIOS team has fixed it.

Why am I not surprised?

Thanks for the heads up!

       tglx