Re: kvm PCI assignment & VFIO ramblings

On Sun, Aug 28, 2011 at 05:04:32PM +0300, Avi Kivity wrote:

On 08/28/2011 04:56 PM, Joerg Roedel wrote:

quoted

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