Re: [PATCH] x86,pci: detect end_bus_number according to acpi/e820reserved

From: Ingo Molnar
Date: Sun Jul 20 2008 - 02:48:52 EST



* Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote:

> On Friday, July 18, 2008 3:27 pm Yinghai Lu wrote:
> > On Fri, Jul 18, 2008 at 2:48 PM, Jack Howarth <howarth@xxxxxxxxxxxxxxxxx>
> wrote:
> > > YH,
> > > I'll test the new patch shortly. When I do, I'll put back in
> > > your debug patches to try to get a complete log with pci=verbose
> > > and initcall_debug with PCIEASPM disabled.
> >
> > tip tree has the two debug patches.
> >
> > > Hopefully the probing
> > > is done in the same general fashion with and without PCIEASPM so
> > > we can deduce what exactly is being probed when my MacBook Pro
> > > freezes during boot with PCIEASPM enabled. I consider the fact
> > > that booting 2.6.26 always freezes the kernel when PCIEASPM
> > > is enabled to be the more serious bug (since once Fedora ships
> > > 2.6.26 kernels I'll be stuck always building my own).
> >
> > another laptop : Acer ... suffer this problem too with ASPM...
>
> Yeah, looks like we'll have to be more conservative about enabling
> ASPM. Maybe a whitelist approach would be better...

all my testsystems boot fine with it. Maybe a blacklist? :)

Ingo
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