Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport

[Michael S. Tsirkin]

On Wed, Mar 20, 2013 at 04:56:01PM -0400, Michael R. Hines wrote:
> 
> Forgive me, vmsplice system call? Or some other interface?
> 
> I'm not following......
> 
> On 03/20/2013 04:46 PM, Michael S. Tsirkin wrote:
> >On Wed, Mar 20, 2013 at 04:39:00PM -0400, Michael R. Hines wrote:
> >>Unmapped virtual addresses cannot be pinned for RDMA (the hardware
> >>will break),
> >>but there's no way to know they are unmapped without checking
> >>another data structure.
> >So for RDMA, when you try to register them, this will fault them in.

I'm just saying get_user_pages brings pages back in from swap.