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SubjectRe: [099/244] PCI: Set PCI-E Max Payload Size on fabric
On Fri, Sep 30, 2011 at 4:40 PM, Jon Mason <mason@myri.com> wrote:
>
> On Fri, Sep 30, 2011 at 5:33 PM, Bjorn Helgaas <bhelgaas@google.com> wrote:
> > On Wed, Sep 28, 2011 at 4:01 PM, Greg KH <gregkh@suse.de> wrote:
> >> 3.0-stable review patch.  If anyone has any objections, please let us know.
> >
> > I object to this :)  I think the following patches should be omitted
> > from -stable:
> >
> > [099/244] PCI: Set PCI-E Max Payload Size on fabric
> > [100/244] PCI: export pcie_bus_configure_settings symbol
> > [101/244] PCI: Remove MRRS modification from MPS setting code
> > [212/244] pci: Dont crash when reading mpss from root complex
> >
> > I've heard rumors that these patches are required to make 3.0 boot on
> > some machines, but I don't really believe it, and I haven't seen the
> > problem reports myself.
>
> Would it be acceptable to disable MPS modification by default (as you
> have been suggesting for 3.1) and have the machines who are having the
> boot issues pass a boot parm to enable the MPS modification?

I'm OK with 3.1 having MPS modification disabled by default, but
having a command line switch to enable it.

Should that same thing go in 3.0-stable? I dunno. My first reaction
is "No, because I still don't have a concrete problem report that says
it fixes anything." I can't tell if these are secret machines, people
thinking the 3.1-rcX regressions are a problem in 3.0, or what.

Bjorn
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