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Date:   Sun, 23 Apr 2023 15:10:37 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Alyssa Ross <hi@alyssa.is>
Cc:     stable@vger.kernel.org, Nick Cao <nickcao@nichi.co>,
        Ingo Molnar <mingo@kernel.org>,
        Pingfan Liu <kernelfans@gmail.com>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Steve Wahl <steve.wahl@hpe.com>, Dave Young <dyoung@redhat.com>
Subject: Re: [PATCH v4.14] x86/purgatory: Don't generate debug info for
 purgatory.ro
Message-ID: <2023042328-prelaw-elastic-7d96@gregkh>
References: <20230421224048.1236703-1-hi@alyssa.is>
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On Fri, Apr 21, 2023 at 10:40:48PM +0000, Alyssa Ross wrote:
> From: Pingfan Liu <kernelfans@gmail.com>
> 
> Purgatory.ro is a standalone binary that is not linked against the rest of
> the kernel.  Its image is copied into an array that is linked to the
> kernel, and from there kexec relocates it wherever it desires.
> 
> Unlike the debug info for vmlinux, which can be used for analyzing crash
> such info is useless in purgatory.ro. And discarding them can save about
> 200K space.
> 
>  Original:
>    259080  kexec-purgatory.o
>  Stripped debug info:
>     29152  kexec-purgatory.o
> 
> Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
> Signed-off-by: Ingo Molnar <mingo@kernel.org>
> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
> Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
> Acked-by: Dave Young <dyoung@redhat.com>
> Link: https://lore.kernel.org/r/1596433788-3784-1-git-send-email-kernelfans@gmail.com
> (cherry picked from commit 52416ffcf823ee11aa19792715664ab94757f111)
> Signed-off-by: Alyssa Ross <hi@alyssa.is>
> ---
>  arch/x86/purgatory/Makefile | 3 +++
>  1 file changed, 3 insertions(+)
>

All now queued up, thanks.

greg k-h