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Re: [Xen-devel] [PATCH 2 of 5] x86: make the pv-only e820 array be dynam

On Fri, Apr 08, 2011 at 09:22:05AM +0100, Ian Campbell wrote:
> On Thu, 2011-04-07 at 21:25 +0100, Konrad Rzeszutek Wilk wrote:
> > # HG changeset patch
> > # User Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > # Date 1302202697 14400
> > # Node ID 01d0d338b97491a3aa816dab43cc709a234214f7
> > # Parent  decab6c21cc3d7ce4d4dad949d34ba35d4600490
> > x86: make the pv-only e820 array be dynamic.
> > 
> > During creation of the PV domain we allocate the E820 structure to be
> > the E820MAX. This will allow the tool stack to fill the E820 with more
> > than three entries.
> Is it possible to defer this allocation to set_memory_map time so we can
> allocate only the required size? I guess E820MAX (128) entries is only
> 2.5k but a typical e820 is capped at more like 20 entries in practice
> (<0.5k).

The later patch does that. If I figure out how to "squash" the hg commits
together I can post it as one patch..

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