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Date:	Mon, 10 Feb 2014 14:33:35 -0700
From:	Bjorn Helgaas <>
To:	Paul Bolle <>
Cc:	Steven Newbury <>,
	Daniel Vetter <>,
	David Airlie <>,
	intel-gfx <>,
	Linux Kernel Mailing List <>,
	Yinghai Lu <>
Subject: Re: [Intel-gfx] agp/intel: can't ioremap flush page - no chipset flushing

On Sun, Feb 9, 2014 at 6:25 AM, Paul Bolle <> wrote:
> On Sun, 2014-02-09 at 13:15 +0000, Steven Newbury wrote:
>> PCI resource allocation is undergoing some changes at the moment, it's
>> definitely a bug if the Flush Page isn't getting allocated.  I'm looking
>> forward to hopefully getting pci_bus_alloc_resource_fit() behaviour in
>> mainline, it will provide much better resource allocation in the 32 bit
>> PCI address space, and prevent problems like this from cropping up.
>> See Yinghai Lu's for-pci-res-alloc branch.
>> I've been carrying the changes in my local tree, but right now the
>> upstream PCI changes are quite extensive.  He's planning on rebasing the
>> branch soon.
> Does this mean I might be better of not bisecting this just yet? Or are
> these changes targeted at v3.15 (or later)?

Yinghai's changes would probably be in v3.15 or later.

Can you open a bugzilla report and attach complete dmesg
logs of the working and broken kernels to it?  There might be more
useful resource-related messages from the PCI core.

I wouldn't start bisecting yet, but if you're in the mood, this
commit: 96702be56037 "Merge branch 'pci/resource' into next" looks
like a good place to start, so you could try the pre-merge commit:
04f982beb900 "Merge branch 'pci/msi' into next".  If 04f982beb900 is
good, there are only about 15 commits on the pci/resource branch to
look at.

Thanks for the report!

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