Re: i386 PAE support (Patches)

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Mon, Dec 21, 2009 at 11:19:05PM +0000, Jeremy Morse wrote:
> In addition paddr_t's would be needlessly large for systems without PAE.

IMO paddr_t being 64bit is mostly a red hering. A proper runtime
constant for drivers might be useful to switch between 32bit and 64bit
mode depending on the highest memory address. Some drivers have nasty
hacks for that ATM (e.g. twa(4)) and using 64bit without good reason
adds overhead e.g. for PCI.

Joerg