Re: [Xen-devel] xen-gntdev gets stuck unmapping a 2nd page

[Dave Scott <Dave.Scott@xxxxxxxxxx>]

On 10 Sep 2014, at 13:41, David Vrabel <david.vrabel@xxxxxxxxxx> wrote:

> On 05/09/14 22:04, Dave Scott wrote:
>> Hi,
>> 
>> I've been playing more with vchan and I think I've hit a bug in xen-gntdev.
>> It works ok if I map/unmap in a single page. If I increase the buffer size
>> and cause vchan to map a second page (non-contiguous mappings via 2 distinct
>> libxc calls), the process gets stuck in disk sleep when unmapping the second
>> page. The same happens if I comment out the unmap and let the program exit.
>> 
>> I'm using a 3.13 kernel:
> 
> Can you try the latest kernel?  This looks like it may be a bug in the
> generic memory hotplug device driver rather than something specific to
> gntdev.

OK, will give it a go.

Thanks,
Dave


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