Re: [Xen-devel] [Xen-users] Xen memory allocation for dom0 and domU

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 04.02.15 at 17:41, <Ian.Campbell@xxxxxxxxxx> wrote:
> I originally used to think that domheap allocations would fall back to
> the xenheap if the domheap was exhausted, but I think I was mistaken in
> that.

That's an arch choice actually - there are two variants of the Xen
heap allocation function.

> Patch for all this below. Jan, I don't think there is any (possibly
> historical on x86_32) x86 option we should be trying to be consistent
> with.

On x86-32 it was always fixed 16M. On x86-64 we had a
"xenheap_megabytes=" option before the sharing of the pools
got introduced.

Jan


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