PCI resources above 4GB

[Yinghai Lu]

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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: assign_sorting.patch
Type: application/octet-stream
Size: 1259 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20120413/76a55111/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: find_one_just_fit_1.patch
Type: application/octet-stream
Size: 2803 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20120413/76a55111/attachment-0001.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: find_one_just_fit_2.patch
Type: application/octet-stream
Size: 11856 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20120413/76a55111/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: save_big_align.patch
Type: application/octet-stream
Size: 1096 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20120413/76a55111/attachment-0003.obj>