Re: 2.3.43 alpha broken with >2g of ram

[Richard Henderson]

On Sat, Feb 12, 2000 at 12:29:15PM -0800, Linus Torvalds wrote:
> With the highmem approach, no other devices will ever see the
> non-PCI-DMA'able pages, which is EXACTLY what we want.
> 
> That's the whole point of using the high-mem approach: the high pages are
> still used, but they are used only for a controlled subset of the problems
> space.

Ah, I see.  I was unclear how this was done.  In which case, I think
the command line switch is most definitely the best option.

Andrea, if you still feel the need to forward port the highmem stuff,
you'd better make it a configure option only.  Otherwise you'd be
punishing systems that do have all devices converted.

r~