linux-kernel - Re: 5.16-rc: "x86/boot: Pull up cmdline" breaks mem=

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Message-ID: <e3bc75b-54e-ac84-fcd8-3549aaaf3017@google.com>
Date:   Wed, 8 Dec 2021 21:49:24 -0800 (PST)
From:   Hugh Dickins <hughd@...gle.com>
To:     Borislav Petkov <bp@...e.de>
cc:     Dan Williams <dan.j.williams@...el.com>,
        Anjaneya Chagam <anjaneya.chagam@...el.com>,
        linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: 5.16-rc: "x86/boot: Pull up cmdline" breaks mem=

Typo, sorry Anjaneya.

On Wed, 8 Dec 2021, Hugh Dickins wrote:

> Bad news, I'm afraid: I boot with "mem=1G" on the cmdline for testing,
> which worked fine on 5.16-rc1, but does not work on 5.16-rc2 onwards.
> 
> Bisection arrived at 8d48bf8206f7 ("x86/boot: Pull up cmdline preparation
> and early param parsing"); and reverting c0f2077baa41 ("x86/boot: Mark
> prepare_command_line() __init") then 8d48bf820cf7 does fix my "mem=1G".
> 
> I have not tried 5.15-stable, but guess that is likewise afflicted.
> Sympathy, but no suggestions from me: early init ordering is hard!
> 
> Hugh
>