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Re: user-level drivers

From: Samuel Thibault
Subject: Re: user-level drivers
Date: Tue, 10 May 2011 03:29:11 +0200
User-agent: Mutt/1.5.12-2006-07-14

Richard Braun, le Mon 09 May 2011 13:33:37 +0200, a écrit :
> On Mon, May 09, 2011 at 01:27:32PM +0200, Thomas Schwinge wrote:
> > > I'd suggest using natural_t (or unsigned long) too. But then, it can't
> > > be used to address >4 GiB physical memory. Consider expressing physical
> > > memory in page frame numbers.
> > 
> > Good idea!  But: what about differently sized frames (4 KiB/2
> > MiB/whatever amd64 allows)?  (In case it'd make sense to support these at
> > some point?)  Or is this over-engineering already?
> These are virtual frames.

There are archs which have varying page size.  I'd rather avoid
introducing the page size, can't mig cope with 64bit values on 32bit


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