From: Ulrich Drepper <drepper@redhat.com>
To: phil-list@redhat.com
Cc: Mark Gross <markgross@thegnar.org>, Andi Kleen <ak@muc.de>,
Ingo Molnar <mingo@elte.hu>, Alexander Viro <viro@math.psu.edu>,
S Vamsikrishna <vamsi_krishna@in.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [patch] thread-aware coredumps, 2.5.43-C3
Date: Sat, 02 Nov 2002 23:32:01 -0800 [thread overview]
Message-ID: <3DC4D0F1.309@redhat.com> (raw)
In-Reply-To: <20021021151747.GA227@elf.ucw.cz>
Pavel Machek wrote:
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>>Having the last branch before a crash would be cool. Its easy to
>>add note
>
>
> How do you get that info in the first place? I do not think CPU stores
> info about last branch it did...
Haven't seen a reply so far so here it goes.
Look at Intel's System Programming manual for P4. One of the MSRs
stores this information. 0x1d7 on P4/P4 Xeon.
- --
- --------------. ,-. 444 Castro Street
Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA
Red Hat `--' drepper at redhat.com `---------------------------
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next prev parent reply other threads:[~2002-11-03 7:26 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-08 12:09 [patch] thread-aware coredumps part 1, tcore-2.5.41-A6 Ingo Molnar
2002-10-08 13:30 ` mgross
2002-10-17 9:11 ` [patch] thread-aware coredumps, 2.5.43-C3 Ingo Molnar
2002-10-17 16:40 ` Daniel Jacobowitz
2002-10-21 14:29 ` Alan Cox
2002-10-21 14:54 ` Daniel Jacobowitz
2002-10-21 16:16 ` Alan Cox
2002-10-21 16:04 ` Daniel Jacobowitz
2002-10-17 21:07 ` mgross
2002-10-18 0:48 ` Daniel Jacobowitz
2002-10-18 13:57 ` Mark Gross
2002-10-18 14:03 ` Mark Gross
2002-10-19 13:26 ` Mark Kettenis
2002-10-19 19:26 ` Bill Davidsen
2002-10-19 19:34 ` Ulrich Drepper
2002-10-19 13:20 ` Mark Kettenis
2002-10-19 18:42 ` Mark Gross
2002-10-18 1:10 ` Andi Kleen
2002-10-18 1:35 ` Mark Gross
2002-10-18 2:12 ` Andi Kleen
2002-10-18 2:58 ` Mark Gross
2002-10-18 3:55 ` Daniel Jacobowitz
2002-10-18 14:00 ` mgross
2002-10-21 15:17 ` Pavel Machek
2002-11-03 7:32 ` Ulrich Drepper [this message]
2002-10-19 17:32 ` Ulrich Drepper
2002-10-18 2:23 ` Ulrich Drepper
2002-10-18 2:40 ` Andi Kleen
2002-10-08 18:04 ` [patch] thread-aware coredumps part 1, tcore-2.5.41-A6 mgross
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