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From: Thomas Gleixner <tglx@linutronix.de>
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To: Mario Limonciello <mario.limonciello@amd.com>, Peter Zijlstra
 <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov
 <bp@alien8.de>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
 <x86@kernel.org>, Linux kernel regressions list
 <regressions@lists.linux.dev>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>, Mark Rutland
 <mark.rutland@arm.com>, Alexander Shishkin
 <alexander.shishkin@linux.intel.com>, Jiri Olsa <jolsa@kernel.org>,
 Namhyung Kim <namhyung@kernel.org>, Ian Rogers <irogers@google.com>,
 Adrian Hunter <adrian.hunter@intel.com>, Dave Hansen
 <dave.hansen@linux.intel.com>, "H . Peter Anvin" <hpa@zytor.com>, "Rafael
 J . Wysocki" <rafael@kernel.org>, Len Brown <len.brown@intel.com>, Pavel
 Machek <pavel@ucw.cz>, David Woodhouse <dwmw@amazon.co.uk>, Sandipan Das
 <sandipan.das@amd.com>, "open list:PERFORMANCE EVENTS SUBSYSTEM"
 <linux-perf-users@vger.kernel.org>, "open list:PERFORMANCE EVENTS
 SUBSYSTEM" <linux-kernel@vger.kernel.org>, "open list:SUSPEND TO RAM"
 <linux-pm@vger.kernel.org>, "open list:ACPI" <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH v2 1/2] x86: Enable x2apic during resume from suspend if
 used previously
In-Reply-To: <d7c3a03e-6f52-4bcf-aaae-668f6601ceb8@amd.com>
References: <20231026170330.4657-1-mario.limonciello@amd.com>
 <20231026170330.4657-2-mario.limonciello@amd.com> <87wmv721nm.ffs@tglx>
 <d7c3a03e-6f52-4bcf-aaae-668f6601ceb8@amd.com>
Date: Wed, 01 Nov 2023 00:20:03 +0100
Message-ID: <878r7imlb0.ffs@tglx>
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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