Julian Elischer wrote:
> > Are you actually going ahead with the PAE support?
> >
> > Will this be a compile-time option, so that it can be
> > turned off?
> >
> > I considered doing the same, about 4 months ago but it's not
> > like I could use the additional memory for mbufs, sockets, or
> > other useful kernel structures, so I bailed on completing it.
>
> If you have the correct hardware, it can be used for
> mbufs, bufs, or normal user memeory..
That would be MIPS R4400, AMD "Sledgehammer", UltraSPARC64, or
Itanium hardware? 8-).
I don't see how the hardware you pick -- unless it's 64 bit
hardware -- is going to make it usable as mbuf targets from
userspace, unless you have a big change in mind for the
uiomove code that you aren't telling us about, so that the
copyin can be bounced properly... just having 64 bit PCI
cards that can access the memory directly via DMA isn't
enough, I think.
-- Terry
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