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Subject: RE: PCI Resource allocation
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Flores, Raul" <raul.flores@lmco.com>
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Date: Mon, 08 Dec 2008 10:00:30 +1100
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On Thu, 2008-12-04 at 18:12 -0600, Flores, Raul wrote:
> A bit off topic, but since the subject is pci resource allocation:
> 
> As entered here:
> http://bugs.gentoo.org/show_bug.cgi?id=249832
> 
> the 2.6.24-gentoo-r3 kernel; iomem tree for my video display works, but
> has not worked in the following kernels:
> 2.6.26-gentoo-r2
> 2.6.27-gentoo-r2
> 2.6.28-rc4 (perfmon2 git)
> 
> Using g5_defconfig on an iMac G5 iSight PowerMac 12,1 ppc64 (cross 32
> userspace) PPC970FX
> 
> Had to hack to arch/powerpc/kernel/pci-common.c in alloc_resource() so
> that I could run the 2.6.28 kernel with perfmon2.

That's strange... looks like something fishy with the PCI-E root
complex, can you enable DEBUG in pci-common.c and pci_64.c and send me
the resulting dmesg output ?

Cheers,
Ben.