linux-kernel - Re: [PATCH 2/2] x86/boot/compressed: Remove unnecessary sections from bzImage

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Message-ID: <202002060320.2B76A4E6@keescook>
Date:   Thu, 6 Feb 2020 03:44:52 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Arvind Sankar <nivedita@...m.mit.edu>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] x86/boot/compressed: Remove unnecessary sections
 from bzImage

On Thu, Jan 09, 2020 at 10:02:18AM -0500, Arvind Sankar wrote:
> Discarding the sections that are unused in the compressed kernel saves
> about 10 KiB on 32-bit and 6 KiB on 64-bit, mostly from .eh_frame.
> 
> Signed-off-by: Arvind Sankar <nivedita@...m.mit.edu>

Looks good to me. I was worried this would paper over the problem, but
actually this solves it even more directly by removing the troublesome
sections. So, yes, let's do this too. :)

Acked-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook