From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steven Newbury <steve@snewbury.org.uk>
Subject: Re: agp/intel: can't ioremap flush page - no chipset
 flushing
Date: Sun, 09 Feb 2014 13:32:40 +0000
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To: Paul Bolle <pebolle@tiscali.nl>
Cc: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel.vetter@ffwll.ch>, intel-gfx <intel-gfx@lists.freedesktop.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Bjorn Helgaas <bhelgaas@google.com>, Yinghai Lu <yinghai@kernel.org>
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On Sun, 2014-02-09 at 14:25 +0100, 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)?
> 
> 
> Paul Bolle
> 

It's an aside really for now.  The bug has probably been introduced by
the recent pci allocation changes so it should be easier for you to
bisect, hopefully.