Re: [Xen-devel] [patch] nr_pfns miscalculated

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 May 2005, at 14:58, Christian Limpach wrote:

> On Thu, May 12, 2005 at 02:58:10PM +0100, Keir Fraser wrote:
> > On 12 May 2005, at 14:45, Christian Limpach wrote:
> >
> > > Looks to me like the current code tries to handle the case where an
> > > e820 entry starts not on a page boundary -- not sure this is 
> > > needed...
> > It's probably rounding the wrong way: should consider only pages
> > completely covered by the e820 range.
> At least the current code is consistent.
>
>     christian
Actually it's deciding what should be marked as 'I/O memory'. The 
current code includes fractional pages -- since such pages are never 
registered with the RAM allocator, this policy doesn't seem harmful.
 -- Keir


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