On Fri, 13 Apr 2012, 09:26:55 BST, Yinghai Lu <yinghai at kernel.org> wrote:
> On Thu, Apr 12, 2012 at 9:40 AM, Steven Newbury <steve at snewbury.org.uk> > wrote: > > > > > > > > It would be useful to preserve as much low PCI memory address > > > > space as possible for hotplug devices (like my Radeon), but the > > > > other problem is small regions get allocated at the bottom, > > > > resulting in the inability to find large aligned regions later on. > > > > ?I see code to default to top-down allocation was reverted, I > > > > guess I'm going to have to dig into the archive to find out why... > > Please check attached patches that will find_resource with fit. It may > leave space for your hotplug devices. > >? ? PCI: Should add children device res to fail list >? ? PCI: Try to allocate mem64 above 4G at first >? ? intel-gtt: Read 64bit for gmar_bus_addr >? ? PCI: Make sure assign same align with large size resource at first >? ? resource: make find_resource could return just fit resource >? ? PCI: Don't allocate small resource in big empty space. >? ? resource: only return range with needed align > > You can get them from > >? ? ? ? ? ? > git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git > for-pci-res-alloc > Thanks Yinghai, I'll give it a spin.
