From: Jan Kiszka <jan.kiszka@web.de>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
utrace-devel@redhat.com, Avi Kivity <avi@redhat.com>
Subject: Re: x86: do_debug && PTRACE_SINGLESTEP broken by 08d68323d1f0c34452e614263b212ca556dae47f
Date: Mon, 21 Dec 2009 17:48:17 +0100 [thread overview]
Message-ID: <4B2FA6D1.20408@web.de> (raw)
In-Reply-To: <20091221165304.GA5061@redhat.com>
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Oleg Nesterov wrote:
> On 12/21, Jan Kiszka wrote:
>> Oleg Nesterov wrote:
>>> Hmm. Now I see how wrong I was when I said this code is "obviously wrong" ;)
>
> Yes, it is easy to blame the code you don't understand.
>
> My apologies to all.
>
>>> I'll add the debugging printk's and report the output. Sorry for delay,
>>> can't do this today.
>> Can't reproduce, runs fine here with with 2.6.33-rc1 as both host&guest
>> and qemu-kvm latest git. Host uses kvm-intel.
>
> Everything runs fine under 2.6.32 as a _host_ kernel. Previously I did
> the testing under 2.6.26.5-45.fc9.
Makes sense: that kernel (most probably) predates any debug register
virtualization in kvm.
>
> Sorry for noise, thanks all for your help.
Never mind.
Jan
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next prev parent reply other threads:[~2009-12-21 16:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-18 0:56 x86: do_debug && PTRACE_SINGLESTEP broken by 08d68323d1f0c34452e614263b212ca556dae47f Oleg Nesterov
2009-12-18 1:40 ` Roland McGrath
2009-12-18 2:10 ` Oleg Nesterov
2009-12-18 2:58 ` Frederic Weisbecker
2009-12-18 3:09 ` Frederic Weisbecker
2009-12-18 3:53 ` Roland McGrath
2009-12-18 3:06 ` Frederic Weisbecker
2009-12-18 17:27 ` Oleg Nesterov
2009-12-18 17:58 ` K.Prasad
2009-12-18 18:24 ` Oleg Nesterov
2009-12-18 20:05 ` Roland McGrath
2009-12-18 22:32 ` Oleg Nesterov
2009-12-21 10:22 ` Jan Kiszka
2009-12-21 16:53 ` Oleg Nesterov
2009-12-21 16:48 ` Jan Kiszka [this message]
2009-12-18 23:15 ` Frederic Weisbecker
2009-12-20 8:30 ` Avi Kivity
2009-12-18 17:37 ` K.Prasad
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