From: Jeff Dike <jdike@addtoit.com>
To: "Bradshaw, James" <jbradsha@enterasys.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] vmalloc and shared memory question
Date: Tue, 18 Sep 2007 20:34:29 -0400 [thread overview]
Message-ID: <20070919003429.GA10568@c2.user-mode-linux.org> (raw)
In-Reply-To: <5A9C383ECECEEE4F82BD5E7DCCD318E9C570C2@MABOSEVS1.ets.enterasys.com>
On Tue, Sep 18, 2007 at 05:00:39PM -0400, Bradshaw, James wrote:
> I'm running into a problem with a 2.6.14.7 UML kernel and I wonder if
> anyone can help. The issue appears to be that memory allocated by a call
> to vmalloc lies outside the UML's virtual memory map, so that a
> subsequent pointer dereference ends up causing a seg fault.
> Continuing past the breakpoint results in a seg fault:
I think this is probably OK. UML uses SIGSEGV for page faults, and
vmalloc memory is faulted in just like process memory.
(gdb) handle SIGSEGV nostop noprint pass
should have the effect that you want.
Jeff
--
Work email - jdike at linux dot intel dot com
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prev parent reply other threads:[~2007-09-19 0:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 21:00 [uml-devel] vmalloc and shared memory question Bradshaw, James
2007-09-19 0:34 ` Jeff Dike [this message]
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