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

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Message-ID: <CAErSpo7unezE4hRYDUsHbmAV+dxgaMFqBOU=svpUEFKieG=omA@mail.gmail.com>
Date:	Thu, 25 Sep 2014 10:04:44 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Joseph Salisbury <joseph.salisbury@...onical.com>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH 2/2] PCI: Only enable realloc auto when root bus has 64bit mmio

On Thu, Sep 25, 2014 at 9:49 AM, Joseph Salisbury
<joseph.salisbury@...onical.com> wrote:
> On 09/16/2014 06:27 PM, Yinghai Lu wrote:
>> On Tue, Sep 16, 2014 at 1:21 PM, Joseph Salisbury
>> <joseph.salisbury@...onical.com> wrote:
>>> A new bug[0] was opened due to enabling PCI_REALLOC_ENABLE_AUTO, which
>>> is similar to the original bug[1] we discussed.
>>>
>>> Just wondering if there have been any additional ideas on realloc since
>>> this was last discussed?
>>>
>>> [0] http://pad.lv/1363313
>>> [1] http://pad.lv/1245938

As a side-note, this looks like a regression and I should have given
it more attention, but I don't track all the vendor bug databases.  If
you open a kernel.bug bugzilla and mark it as a regression, I *do*
track that regularly.  For regressions, it's helpful if you can attach
dmesg logs from working and non-working kernels that are as close
together as possible.  It'd be ideal if those were upstream kernels,
but I doubt you apply any patches that would be relevant, so I think
logs from Ubuntu kernels would be enough.

Bjorn
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