From: Ulrich Drepper <drepper@redhat.com>
To: Matt Mackall <mpm@selenic.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Make sysenter support optional
Date: Thu, 29 Dec 2005 20:03:59 -0800 [thread overview]
Message-ID: <43B4B1AF.3020303@redhat.com> (raw)
In-Reply-To: <20051230033803.GG3356@waste.org>
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Matt Mackall wrote:
> Ok, let me be explicit: think systems with absolutely no facility for
> recording or displaying a backtrace.
You don't know much about unwinding, do you? The same information is
needed for C++ exception handling, thread cancellation, etc. Now go on
and tell me you don't need this either.
> As far as I'm aware, uclibc has no vdso support, so it might as well
> not exist for systems using it.
And I told you that the support which magically makes all this sometimes
work without the unwind info in the vdso will sooner or later break.
Then whatever other libc is out there has to get vdso support to be able
to function correctly.
--
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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next prev parent reply other threads:[~2005-12-30 4:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-28 21:24 [PATCH] Make sysenter support optional Matt Mackall
[not found] ` <a36005b50512281407x74415958tb0fa2b52f4dd7988@mail.gmail.com>
2005-12-28 22:13 ` Fwd: " Ulrich Drepper
2005-12-29 19:56 ` Matt Mackall
[not found] ` <a36005b50512291901l6a5acb77ha17d3552ea9c9fd9@mail.gmail.com>
2005-12-30 3:04 ` Ulrich Drepper
2005-12-30 3:38 ` Matt Mackall
2005-12-30 4:03 ` Ulrich Drepper [this message]
2005-12-30 11:20 ` Bernd Petrovitsch
2005-12-29 8:48 ` Ingo Molnar
2005-12-29 19:48 ` Matt Mackall
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