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Date: Tue, 7 May 2013 13:11:57 +0800
From: Gavin Shan <shangw@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH 2/3] powerpc/powernv: Disable IO space for PCI buses
Message-ID: <20130507051157.GA31911@shangw.(null)>
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Cc: bhelgaas@google.com, linux-pci@vger.kernel.org,
 linuxppc-dev@lists.ozlabs.org, yinghai@kernel.org,
 Gavin Shan <shangw@linux.vnet.ibm.com>
Reply-To: Gavin Shan <shangw@linux.vnet.ibm.com>
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On Tue, May 07, 2013 at 07:33:02AM +1000, Benjamin Herrenschmidt wrote:
>On Mon, 2013-05-06 at 21:44 +0800, Gavin Shan wrote:
>> The patch intends to set the special flag (PCI_BUS_FLAGS_NO_IO) for
>> root buses so PCI core will skip assignment for IO stuff. Besides,
>> we also clear the IO resources on all PCI devices for PHB3.
>
>Why the new hook ? Can't this be detected simply because there is
>no aperture in the pci_host_bridge with IORESOURCE_IO set in the flags ?
>

Yeah, Ben. I've changed it accordingly in v2 and the problem is that we
need the proposed patches from Yinghai or mine :-)

Thanks,
Gavin