linux-kernel - Re: [Xen-devel] Re: Xen paravirt frontend block hang

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Message-ID: <47E85766.7020108@theshore.net>
Date:	Mon, 24 Mar 2008 21:37:42 -0400
From:	"Christopher S. Aker" <caker@...shore.net>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Xen-devel <xen-devel@...ts.xensource.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	virtualization@...ts.linux-foundation.org,
	xming <xmingske@...il.com>
Subject: Re: [Xen-devel] Re: Xen paravirt frontend block hang

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@...shore.net

Nice work!

-Chris

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