Re: [PATCH 2/2] PCI: Only enable realloc auto when root bus has 64bit mmio

[Yinghai Lu]

On Wed, Dec 11, 2013 at 11:19 AM, Joseph Salisbury
<joseph.salisbury@xxxxxxxxxxxxx> wrote:
> On 12/09/2013 03:10 PM, Yinghai Lu wrote:
>> On Mon, Dec 9, 2013 at 11:42 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
>>> That doesn't answer my question at all.
>>>
>>> I understand that this change makes it so Joseph doesn't have to use
>>> "pci=realloc=off".  But why should auto-reallocation be limited to
>>> buses that have resources above 4GB?  That doesn't make any sense.
>>>
>>> We should fix the reallocation code so it can deal with this case.  If
>>> there's not enough space for everything, obviously we have to leave
>>> something unassigned.  A ROM BAR is a good candidate for leaving
>>> unassigned, because most of the time we can get along without it.
>> Yes, that is ideal and not that simple.
>> but that would be hard to backport to old kernels.
>>
>> BTW, Joseph, can you try
>> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git
>> for-pci-3.14
>> with pci=realloc=on
>>
>> on that system?
>>
>> Thanks
>>
>> Yinghai
> I noticed there was some back and forth on this thread.  Do you still
> want me to test this version, Yinghai?

Yes, if that works, we would not need to put the patch in upstream for limiting
realloc auto scope.

Thanks

Yinghai
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/