Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI motherboard resources

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From: David Miller
Date: Wednesday, May 23, 2007 - 4:04 pm

From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 23 May 2007 15:16:23 -0700 (PDT)


I knew mmconfig was broken conceptually the first time I started
seeing write posting "bug fixes" for it that would do a read back from
PCI config space via mmconfig to post the write, which of course has
potential side-effects on the device and is absolutely illegal if the
write just performed put the device into a PM state or whatever.

Truth is stranger than fiction at times.

MMCONFIG is very much an ill-conceived idea.

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Messages in current thread:
Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI ..., Olivier Galibert, (Mon Apr 30, 3:59 pm)
Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI ..., Olivier Galibert, (Wed May 23, 3:24 pm)
Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI ..., David Miller, (Wed May 23, 4:04 pm)
Re: [RFC PATCH] PCI MMCONFIG: add validation against ACPI ..., Stephen Hemminger, (Wed May 23, 4:07 pm)