Re: [PATCH v1 0/7] PCI: try enabling "pci=use_crs" again

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On 02/05/2010 09:46 AM, Bjorn Helgaas wrote:
> On Wednesday 03 February 2010 07:13:33 pm Yinghai Lu wrote:
>> that may have some merging conflicts to pci_bridge updating patchset....
>>
>> http://lkml.org/lkml/2010/1/22/43
>> [PATCH -v19 0/9] pci: update pci bridge resources
> 
> Yep, it probably will.  I'll help fix up any conflicts.
> 
> Here's another question: there's a bunch of code in amd_bus.c that
> overlaps with the _CRS code.  How much of that will we still need
> if we can turn on _CRS for 2010 and newer machines?

didn't have new AMD machine on hand now.

> 
> The amd_bus.c I/O ECS code doesn't overlap with any of the _CRS stuff,
> but most of the rest looks like it does.

it you have _CRS enabled, other hostbrige read code still read them out, but will check if root resources is already updated by _CRS related code.

> 
> How many AMD boxes need amd_bus.c?  I assume it's mostly or even only
> those with multiple host bridges?  Do you have any idea how many of
> those shipped prior to 2010, and whether there are _CRS defects that
> we're avoiding by using amd_bus.c?
yes.

Sun have 8 or more those kinds systems. and mostly have those problem.

HP have simlair systems too.

YH





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