linux-kernel - Re: [PATCH 1/2] pci: release that leaf bridge' resource that is not big -v11

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Date:	Mon, 23 Nov 2009 17:14:06 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
CC:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alex Chiang <achiang@...com>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Ingo Molnar <mingo@...e.hu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>
Subject: Re: [PATCH 1/2] pci: release that leaf bridge' resource that is not
 big -v11

Kenji Kaneshige wrote:
> Hi,
> 
> I tried v11 patches. This version seems to fix the problem I
> reported against previous version.
> 
> I have no objection against the idea of resource allocation
> changes for PCI express hotplug slots.

thanks

> 
> But I still have concern about changing resource allocation for
> other than PCI express hotplug slots. For example, some hotplug
> controller other than PCI express can have multiple slots under
> the same bus. If some hotplug slots are occupied and the others
> are empty at the boot time, I think your code try to shrink the
> bus resources for hotplug slots allocated by BIOS. It would break
> the hot-add on the empty slots due to the resource allocation
> failure.

no,
it will not touch bridge resources that already assigned by BIOS except
some bridge resource is not big enough. and get big one for them.

YH
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