Message-ID: <47E85766.7020108@theshore.net>
Date: Mon, 24 Mar 2008 21:37:42 -0400
From: "Christopher S. Aker" <caker@theshore.net>
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To: Jeremy Fitzhardinge <jeremy@goop.org>
CC: Xen-devel <xen-devel@lists.xensource.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       virtualization@lists.linux-foundation.org, xming <xmingske@gmail.com>
Subject: Re: [Xen-devel] Re: Xen paravirt frontend block hang
References: <4772AC8E.7010007@theshore.net> <47C712EF.1060703@goop.org>	<47C9F818.4020200@theshore.net> <47CAC931.1000107@goop.org> <47CACFBE.5010007@theshore.net> <47DFE75B.7080404@goop.org>
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Jeremy Fitzhardinge wrote:
> Christopher S. Aker wrote:
>> Jeremy Fitzhardinge wrote:
>>> Are you running an SMP or UP domain?  I found I could get hangs very 
>>> easily with UP (but I need confirm it isn't a result of some other 
>>> very experimental patches).
>>
>> The hang occurs with both SMP and UP compiled pv_ops kernels.  SMP 
>> kernels are still slightly responsive after the hang occurs, which 
>> makes me think only one proc gets stuck at a time, not the entire kernel. 
> 
> The patch I posted yesterday - "xen: fix RMW when unmasking events" - 
> should definitively fix the hanging-under-load bugs (I hope). 

Confirmed-by: caker@theshore.net

Nice work!

-Chris

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