Re: [PATCH] PCI: Clear bridge MEM_64 flag if one child does not support it
From: Yinghai Lu
Date: Tue Dec 09 2014 - 18:16:31 EST
On Tue, Dec 9, 2014 at 2:15 PM, Marek KordÃk <kordikmarek@xxxxxxxxx> wrote:
> On 12/09/2014 08:42 PM, Yinghai Lu wrote:
>> On Tue, Dec 9, 2014 at 10:22 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>>> On Tue, Dec 9, 2014 at 11:07 AM, Marek KordÃk <kordikmarek@xxxxxxxxx>
>>>> I have built and booted your branch and it works well. Do you want me to
>>>> attach some logs?
>>>> (I am new here and I have read http://www.tux.org/lkml/ and I don't want
>> Can you run some graphics benchmark program to check the performance
>> branch: for-pci-allocate-fit-3.18
>> v 3.18 + clear mmio64 flags when children device does not support it
> I have run Unigine Heaven benchmark on both versions (I tried version 2.
> with and also without kernel parameters "debug ignore_loglevel pci=realloc")
> and the performance of each version was the same (70-71 points). I tried to
> run this benchmark also with kernel 3.15.10 and the result was 67 points.
> Tomorrow I can try to run some more benchmarks, today I didn't have much
so putting mem pref under bridge mem does not cause performance loss?
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