From: Chuck Ebbert <cebbert@redhat.com>
To: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86_64: make traps on 'iret' be debuggable in user space
Date: Thu, 07 Feb 2008 15:13:06 -0500 [thread overview]
Message-ID: <47AB6652.3010600@redhat.com> (raw)
In-Reply-To: <20080205081506.655CB2701A8@magilla.localdomain>
On 02/05/2008 03:15 AM, Roland McGrath wrote:
>> thanks, applied. I suppose you have a testcase for this that we could try?
>
> This should exit 0 and show "wait status 0xb7f", and does on i386.
> On 2.6.24 it exits 1 and shows "wait status 0xb".
>
> Note, on the current tree before [PATCH] x86_64: fix iret exception recovery
> that I also posted today, this will instead produce pathological weirdness
> probably with a quick crash or silent reboot, from running with the wrong GS.
>
Did you test without CONFIG_PARAVIRT, and CONFIG_PARAVIRT booted both with and
without the "noreplace-paravirt" parameter?
next prev parent reply other threads:[~2008-02-07 20:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-05 7:51 [PATCH] x86_64: make traps on 'iret' be debuggable in user space Roland McGrath
2008-02-05 8:01 ` Ingo Molnar
2008-02-05 8:15 ` Roland McGrath
2008-02-05 8:16 ` Roland McGrath
2008-02-07 20:13 ` Chuck Ebbert [this message]
2008-02-07 20:30 ` Roland McGrath
2008-02-07 23:28 ` Chuck Ebbert
2008-02-08 0:00 ` Roland McGrath
2008-02-08 0:06 ` Chuck Ebbert
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