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

From: Bjorn Helgaas
Date: Thu Sep 25 2014 - 12:05:14 EST

On Thu, Sep 25, 2014 at 9:49 AM, Joseph Salisbury
<joseph.salisbury@xxxxxxxxxxxxx> wrote:
> On 09/16/2014 06:27 PM, Yinghai Lu wrote:
>> On Tue, Sep 16, 2014 at 1:21 PM, Joseph Salisbury
>> <joseph.salisbury@xxxxxxxxxxxxx> 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]
>>> [1]

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.

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