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xen-devel
Re: [Xen-devel] [PATCH 5/5] changes of common files for xen/ia64 dom0 vp
On 28 Apr 2006, at 03:56, Isaku Yamahata wrote:
Work around for vnif support of xen/ia64 with dom0 vp model.
This is a temporal work around until figuring out how to place a new
page
after grant table page transfer.
Does netback work *at all* for you with vp model? Looks like this patch
may make it build but not actually work, which makes it seem a bit
pointless.
Anyway, two possible solutions are apparent to me:
1. netback gathers 'transmitted' skbuffs and then, in one batch, does
a populate_physmap() call to get new pages for all of them, the
kfree_skb()s each one back to system pool.
2. change semantics of grant transfers for vp guests so that the
operation automatically gets you a fresh page at the same
pseudo-physical address.
Option (2) is maybe the better one? Then this patch would make more
sense (except that the code would be made run-time dependent on
autotranslate feature flag).
-- Keir
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