On Thu, Apr 12, 2012 at 9:40 AM, Steven Newbury <steve@xxxxxxxxxxxxxxx> 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
Attachment:
assign_sorting.patch
Description: Binary data
Attachment:
find_one_just_fit_1.patch
Description: Binary data
Attachment:
find_one_just_fit_2.patch
Description: Binary data
Attachment:
save_big_align.patch
Description: Binary data
