linux-kernel - Re: [PATCH] scripts/sorttable: Fix ORC unwind table sorting on big endian

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Date:   Tue, 24 Nov 2020 14:34:27 +0100
From:   Vasily Gorbik <gor@...ux.ibm.com>
To:     Josh Poimboeuf <jpoimboe@...hat.com>,
        Shile Zhang <shile.zhang@...ux.alibaba.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, Miroslav Benes <mbenes@...e.cz>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Julien Thierry <jthierry@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts/sorttable: Fix ORC unwind table sorting on big
 endian

On Sat, Nov 14, 2020 at 01:53:10PM +0100, Vasily Gorbik wrote:
> Currently when x86_64 kernel is cross compiled on big endian hardware
> ORC unwind table is not sorted correctly. Due to missing byte swaps and
> treating size as 4-byte value ORC sections sizes end up as 0 and the
> problem is silently ignored.
> 
> Make ORC unwind table sorting endianness aware.
> 
> Signed-off-by: Vasily Gorbik <gor@...ux.ibm.com>
> ---
>  This goes on top of the patch series:
>  http://lkml.kernel.org/r/cover.thread-1e2854.your-ad-here.call-01605220128-ext-6070@work.hours
> 
>  scripts/sorttable.h | 20 +++++++++++---------
>  1 file changed, 11 insertions(+), 9 deletions(-)

Friendly ping...