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Re: user-level drivers

From: Richard Braun
Subject: Re: user-level drivers
Date: Mon, 9 May 2011 13:19:22 +0200
User-agent: Mutt/1.5.18 (2008-05-17)

On Mon, May 09, 2011 at 12:17:51PM +0200, Samuel Thibault wrote:
> > Hmm, I guess we don't have anything that is better than using
> > vm_address_t for physical addresses?  At least not in
> > include/mach/std_types.h, i386/include/mach/i386/vm_types.h.  Should we?
> > (phys_address_t based on natural_t?)
> Maybe we should, indeed, else we can't do PAE.

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.

Richard Braun

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