Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in

Linus Torvalds
2008-01-11T21:12:59Z

On Fri, 11 Jan 2008, Matthew Wilcox wrote:
>
> But they can't. We limit the size they can access to 256 bytes, unless
> the kernel probed address 256 and it worked.

Umm. Probing address 256 (or *any* address) using MMCONFIG will simply
lock up the machine. HARD.

What's so hard to understand about MMCONFIG being broken on certain
hardware?

Linus