Re: [Xen-devel] [PATCH v2 03/30] xen/x86: fix parameters and return value of *_set_allocation functions

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

On Thu, Sep 29, 2016 at 04:39:02AM -0600, Jan Beulich wrote:
> >>> On 27.09.16 at 17:56, <roger.pau@xxxxxxxxxx> wrote:
> > Return should be an int, and the number of pages should be an unsigned long.
> 
> I can see the former, but why the latter? Acting on 32-bit quantities
> is a little cheaper after all.

This was requested by Andrew in the previous version:

https://lists.xenproject.org/archives/html/xen-devel/2016-07/msg03126.html

But yes, an unsigned int is enough to hold the maximum number of pages for 
a domain given than we support up to 1TB for HVM guests. Or maybe there are 
plans to increase the maximum supported memory per guest?

Roger.

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