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[Xen-ia64-devel] RE: Implementing both (was: Xen/ia64 - global or per VP VHPT)


  • To: "Dong, Eddie" <eddie.dong@xxxxxxxxx>
  • From: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>
  • Date: Tue, 3 May 2005 07:52:14 -0700
  • Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 03 May 2005 14:51:47 +0000
  • List-id: DIscussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
  • Thread-index: AcVPb3JXMihcD89IQYupUNJEM3YWVAAEihcQAAFcjdAABKuvsAAVXHAgAAAcwiA=
  • Thread-topic: Implementing both (was: Xen/ia64 - global or per VP VHPT)

Oops, accidentally hit reply instead of reply-to-all.

> Hi Eddie --
> 
> Could you explain again what the foreignmap is?
> Is it mappings for other domains (e.g. for domainA
> to access memory in domainB)?  Or is it for
> the hypervisor to access domainA space?  Or
> something else?
> 
> Since the current implementation doesn't have
> this, I just want to ensure I understand it.
> (And it would probably be useful for others
> on the mailing list too!)
> 
> Thanks,
> Dan 
> 
> > -----Original Message-----
> > From: Dong, Eddie [mailto:eddie.dong@xxxxxxxxx] 
> > Sent: Monday, May 02, 2005 10:38 PM
> > To: Magenheimer, Dan (HP Labs Fort Collins); Munoz, Alberto J
> > Cc: ipf-xen; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: RE: Implementing both (was: Xen/ia64 - global or 
> per VP VHPT)
> > 
> > Magenheimer, Dan (HP Labs Fort Collins) wrote:
> > > I _was_ proposing that both mechanisms be present at run time,
> > > but not necessarily permanently -- just to allow easier
> > > testing/comparison during development. By the time we have
> > > real users doing lots of domains, I would hope we would
> > > have enough data to make a decision.
> > > 
> > > Compile-time option would be OK too, but I suspect it
> > > will lead to a debate about what the distribution-default
> > > should be :-) or it will keep changing back and forth
> > > depending on who did the last checkin :-)
> > > 
> > > Either way is OK with me.
> > > 
> > So you have thought of a way to support foreignmap?
> > Eddie
> > 
> 

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