Subject: Re: kvm PCI assignment & VFIO ramblings

From: Joerg Roedel <[email-masked]>
Date: Tue, 30 Aug 2011 18:14:33 +0200

On Sun, Aug 28, 2011 at 05:04:32PM +0300, Avi Kivity wrote:
> On 08/28/2011 04:56 PM, Joerg Roedel wrote:

>> This can't be secured by a lock, because it introduces potential
>> A->B<-->B->A lock problem when two processes try to take each others mm.
>> It could probably be solved by a task->real_mm pointer, havn't thought
>> about this yet...
>>
>
> Or a workqueue -  you get a kernel thread context with a bit of boilerplate.

Right, a workqueue might do the trick. We'll evaluate that. Thanks for
the idea :)

	Joerg