From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tim Deegan <tim@xen.org>
Subject: Re: [RFC/PATCH v2] XENMEM_claim_pages (subop of
	existing) hypercall
Date: Tue, 20 Nov 2012 16:47:44 +0000
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To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Zhigang Wang <zhigang.x.wang@oracle.com>, "Keir (Xen.org)" <keir@xen.org>, Ian Campbell <Ian.Campbell@citrix.com>, Konrad Wilk <konrad.wilk@oracle.com>, Dave Mccracken <dave.mccracken@oracle.com>, Jan Beulich <JBeulich@suse.com>, xen-devel@lists.xen.org
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At 08:33 -0800 on 20 Nov (1353400380), Dan Magenheimer wrote:
> I agree it's possible, just saying it's not trivial... one has to
> account not only for superpages system-wide (which isn't currently
> done) but a mix of unclaimed superpages and unclaimed order==0 pages
> per-domain.  Especially since that would improve launch of only a small
> and shrinking class of domains (PV && superpages=1 && mem="huge"),
> can we please consider it a possible future enhancement, not a showstopper?

Please, no.  Either you need this benighted hypercall, or you don't.  
If you really need it, do it properly.

Tim.