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

From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 11 Jan 2008 13:12:12 -0800 (PST)

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
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References:
- Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
  - From: Greg KH
- Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
  - From: Matthew Wilcox
- Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
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- Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
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- Re: [Patch v2] Make PCI extended config space (MMCONFIG) a driver opt-in
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