linux-kernel - Re: [git pull] PCI changes for 2.6.34

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Date:	Sun, 28 Feb 2010 12:34:24 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Yinghai Lu <yinghai@...nel.org>
cc:	linux-pci@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [git pull] PCI changes for 2.6.34



On Fri, 26 Feb 2010, Jesse Barnes wrote:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 linux-next
> 
> There are a few somewhat scary bits in this request:
>   - Bjorn's _CRS data changes
>   - Yinghai's resource reallocation code
>   - Rafael's runtime PM code

Yinghai's resource reallocation code is broken.

I just bisected a Nouveau boot failure to commit 977d17bb17 ("PCI: update 
bridge resources to get more big ranges in PCI assign unssigned"), and I'm 
going to revert that today one unless I can get a patch that fixes it for 
me.

Attached is good/bad versions of
 - dmesg 
 - /proc/iomem
 - lspci -vvxxx

and note how the bad run is missing this whole thing from iomem:

	-d0000000-efffffff : PCI Bus 0000:02
	-  d0000000-efffffff : PCI Bus 0000:03
	-    d0000000-dfffffff : PCI Bus 0000:05
	-      d0000000-dfffffff : 0000:05:00.0
	-    e0000000-efffffff : PCI Bus 0000:04
	-      e0000000-efffffff : 0000:04:00.0

which is why Nouveau no longer works.

		Linus
View attachment "dmesg.good" of type "TEXT/PLAIN" (61071 bytes)

View attachment "dmesg.bad" of type "TEXT/PLAIN" (74069 bytes)

View attachment "iomem.good" of type "TEXT/PLAIN" (1946 bytes)

View attachment "iomem.bad" of type "TEXT/PLAIN" (1708 bytes)

View attachment "lspci.good" of type "TEXT/PLAIN" (78822 bytes)

View attachment "lspci.bad" of type "TEXT/PLAIN" (78372 bytes)