On 24/09/2010 21:33, "Olaf Hering" <olaf@aepfle.de> 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superceded years ago.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
>
>
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