Re: [Xen-devel] [PATCH] increase initial memory reservation for stubdom based HVM domains

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Keir Fraser, le Thu 15 Jan 2009 17:04:36 +0000, a écrit :
> On 15/01/2009 16:46, "Stefano Stabellini" <stefano.stabellini@xxxxxxxxxxxxx>
> wrote:
> > this patch requests 32 additional MB of free RAM from dom0 when an HVM
> > domain is started, if the device model for the domain is provided by a
> > stubdom.
> > This way there is no risk that a stubdom fails to populate the videoram
> > because the RAM freed for the videoram by dom0 has already been used to
> > create the stubdom.
> 
> Does this mean you're giving up on 'properly' fixing the auto ballooner? :-)
> 
> At least the +32 needs a comment. Perhaps abstraction into a function or
> variable as well as a comment. Is the value 32 as arbitrary as it seems?

32 comes from stubdom/stubdom-dm. It is a bit arbitrary in that it may
not be enough if you add a lot of network cards etc. but should usually
be fine.

Samuel

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