linux-kernel - Re: 2.6.22-rc4-mm1

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Date:	Wed, 06 Jun 2007 18:01:11 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Gabriel C <nix.or.die@...glemail.com>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.22-rc4-mm1

Andrew Morton wrote:
> Yeah, this caused test.kernel.org to fail as well.
> 
> There are a couple of fixes in
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc4/2.6.22-rc4-mm1/hot-fixes/
> which should get things going again.
> 
> Robert, I spent some time picking at
> mmconfig-validate-against-acpi-motherboard-resources.patch then got bored
> with fiddling with it and reverted it outright.

The minimal fix would be to put #ifdef CONFIG_PCI_MMCONFIG around the 
call to pci_mmcfg_late_init in drivers/acpi/bus.c.

> 
> Please, we need to get those prototypes of pci_mmcfg_early_init() and
> pci_mmcfg_late_init() into some sane place which works on all
> architectures, not duplicate one of them in a C file and even see if we can
> avoid the #ifdef CONFIG_PCI_MMCONFIG in arch/i386/pci/init.c
> 
> This code area is really messy, due partly to the x86_64 and i386 sharing. 
> Any changes in there need careful testing and checking.

I'm not sure there's a point in making the prototypes for those 
functions global to all architectures, since it's unlikely anything 
non-X86 could make use of them with any similar semantics. We could 
provide a no-op definition of those functions to avoid the need to ifdef 
the calls, though.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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