From: Andi Kleen <ak@suse.de>
To: jim.houston@comcast.net
Cc: akpm@osdl.org, amitkale@emsyssoft.com, linux-kernel@vger.kernel.org
Subject: Re: Fixes for .cfi directives for x86_64 kgdb
Date: Thu, 18 Mar 2004 00:53:45 +0100 [thread overview]
Message-ID: <20040318005345.330abf19.ak@suse.de> (raw)
In-Reply-To: <m33c8788ac.fsf@new.localdomain>
On 17 Mar 2004 16:37:15 -0500
Jim Houston <jim.houston@comcast.net> wrote:
>
> Hi Andi, Andrew, Amit,
>
> The attached patch fixes the .cfi directives for the common_interrupt
> path for opteron. It seems that the existing .cfi directives in this
> path only work by accident.
>
> I spent yesterday decoding a stack by hand and looking at the
> dwarf unwind data using "readelf -wF". I found that the existing
> .cfi directives describe registers sharing the same stack addresses
> (not a good thing).
>
> This patch makes the unwind data make sense and makes gdb/kgdb more
> likely to produce a useful stack traces.
Thanks. I applied it. The calling.h part gave rejects, but I applied it
by hand. It would be nice if you could check in the final kernel if I didn't
make a mistake.
-Andi
next prev parent reply other threads:[~2004-03-17 23:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-17 21:37 Fixes for .cfi directives for x86_64 kgdb Jim Houston
2004-03-17 23:53 ` Andi Kleen [this message]
2004-03-18 16:51 ` Jim Houston
2004-03-19 13:17 ` Amit S. Kale
2004-03-19 19:23 ` Andi Kleen
2004-03-21 13:12 ` Amit S. Kale
2004-03-23 0:17 ` [PATCH]Call frame debug info for 2.6 kernel George Anzinger
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