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Message-ID: <CANGBn6-sWv81czvi+_pTMm4J4X=TGUR1Jg50k6BOqcCczDwONQ@mail.gmail.com>
Date:   Fri, 10 Dec 2021 14:32:38 -0600
From:   "Patrick J. Volkerding" <volkerdi@...il.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Mike Rapoport <rppt@...nel.org>, Juergen Gross <jgross@...e.com>,
        John Dorminy <jdorminy@...hat.com>, tip-bot2@...utronix.de,
        anjaneya.chagam@...el.com, dan.j.williams@...el.com,
        LKML <linux-kernel@...r.kernel.org>,
        linux-tip-commits@...r.kernel.org, stable@...r.kernel.org,
        x86@...nel.org, Hugh Dickins <hughd@...gle.com>
Subject: Re: [tip: x86/urgent] x86/boot: Pull up cmdline preparation and early
 param parsing

On Fri, Dec 10, 2021 at 5:28 AM Borislav Petkov <bp@...en8.de> wrote:
>
> On Thu, Dec 09, 2021 at 05:37:42PM +0100, Borislav Petkov wrote:
> > Whatever we do, it needs to be tested by all folks on Cc who already
> > reported regressions, i.e., Anjaneya, Hugh, John and Patrick.
>
> Ok, Mike is busy so here are some patches for testing:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git/log/?h=rc4-boot
>
> I'd appreciate it if folks who reported an issue, verify those.
>
> The first two are reverts which should address the issues with mem=
> folks have reported. And the last one should address Anjaneya's issue.

I applied the two revert patches to 5.15.7 (the last one won't apply
so I skipped it) and the resulting x86 32-bit kernel boots fine here
on the Thinkpad X1E that was having issues previously.

Then I tested an unpatched 5.16-rc4, which (as expected) got the boot
hang on the affected machine. Applied the three patches, and the
resulting kernel boots fine.

Take care,

Pat

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