Re: [Xen-devel] using GNTTABOP_transfer on hvm guests

[Keir Fraser <keir@xxxxxxx>]

On 24/09/2010 21:33, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> 
> While looking for more missing p2m_is_paging(p2mt) checks I noticed that
> also the GNTTABOP_transfer code path may return GNTST_eagain if all code
> paths get changed to verify the p2mt.
> But can this really happen? Reading the comments for
> MODPARM_rx_copy/MODPARM_rx_flip in drivers/xen/netfront/netfront.c
> indicates that hvm guests will not use the GNTTABOP_transfer path.
> 
> Are there any possible users for GNTTABOP_transfer in a hvm guest?
> Could xenpaging ever work for paravirtualized guests?

GNTTABOP_transfer used to be used in our pv network drivers, but was
superceded years ago. It's really never used these days.

 -- Keir

> Olaf
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel