linux-kernel - Re: [PATCH] checkstack.pl: fix for aarch64

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Message-Id: <20181207122434.efb1941a3ded73267496c784@linux-foundation.org>
Date:   Fri, 7 Dec 2018 12:24:34 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Qian Cai <cai@....pw>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkstack.pl: fix for aarch64

On Fri,  7 Dec 2018 14:58:43 -0500 Qian Cai <cai@....pw> wrote:

> There is actually a space after "sp," like this,
> 
> ffff2000080813c8:       a9bb7bfd        stp     x29, x30, [sp, #-80]!
> 

Confused.  Why does this matter?  Why is the patched version superior?