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    |   xen-ia64-devel
Re: [Xen-devel] [PATCH 5/5] changes of common files for xen/ia64 dom0	vp 
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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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