Re: [PATCH v2 0/2] Fixes for s3 with parallel bootup

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To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@xxxxxxxxxx>
Subject: Re: [PATCH v2 0/2] Fixes for s3 with parallel bootup
From: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Fri, 27 Oct 2023 14:29:24 -0500
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Ian Rogers <irogers@xxxxxxxxxx>, Adrian Hunter <adrian.hunter@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H . Peter Anvin" <hpa@xxxxxxxxx>, "Rafael J . Wysocki" <rafael@xxxxxxxxxx>, Len Brown <len.brown@xxxxxxxxx>, Pavel Machek <pavel@xxxxxx>, David Woodhouse <dwmw@xxxxxxxxxxxx>, Sandipan Das <sandipan.das@xxxxxxx>, "open list:PERFORMANCE EVENTS SUBSYSTEM" <linux-perf-users@xxxxxxxxxxxxxxx>, "open list:PERFORMANCE EVENTS SUBSYSTEM" <linux-kernel@xxxxxxxxxxxxxxx>, "open list:SUSPEND TO RAM" <linux-pm@xxxxxxxxxxxxxxx>, "open list:ACPI" <linux-acpi@xxxxxxxxxxxxxxx>
In-reply-to: <87zg0327i4.ffs@tglx>
References: <20231026170330.4657-1-mario.limonciello@amd.com> <87zg0327i4.ffs@tglx>
User-agent: Mozilla Thunderbird

On 10/27/2023 14:24, Thomas Gleixner wrote:

On Thu, Oct 26 2023 at 12:03, Mario Limonciello wrote:

Parallel bootup on systems that use x2apic broke suspend to ram.
This series ensures x2apic is re-enabled at startup and fixes an exposed
pre-emption issue.


The PMU issue has absolutely nothing to do with parallel bootup.

Can you please describe stuff coherently?


They are both issues found with S3 testing.
The PMU issue wasn't being observed with cpuhp.parallel=0.

Follow-Ups:
- Re: [PATCH v2 0/2] Fixes for s3 with parallel bootup
  - From: Thomas Gleixner

References:
- [PATCH v2 0/2] Fixes for s3 with parallel bootup
  - From: Mario Limonciello
- Re: [PATCH v2 0/2] Fixes for s3 with parallel bootup
  - From: Thomas Gleixner

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