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From: Ulrich Drepper <drepper@gmail.com>
Date: Wed, 20 Jun 2012 17:21:51 -0400
Message-ID: <CAOPLpQfRSOm4mYFciDky9XqZdb+7nG29ZxR0CpVFzNsnPiPO7w@mail.gmail.com>
Subject: Re: SNB PCI root information
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Ingo Molnar <mingo@kernel.org>, Yinghai Lu <yinghai@kernel.org>,
        jbarnes@virtuousgeek.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        lenb@kernel.org, x86@kernel.org, linux-pci@vger.kernel.org
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On Wed, Jun 20, 2012 at 4:16 PM, Bjorn Helgaas <bhelgaas@google.com> wrote:
> It's not a question of "do BIOSes get this wrong?"  The question is
> "what does a user expect to happen when she supplies
> 'pci=busnum_node=00:00,80:01'?"  I contend that the user expects us to
> use that info whether the BIOS gave us correct info, wrong info, or
> nothing at all.

Think about busnum_node as busnum_default_node.  Then the behavior
makes perfect sense.

I contend that the really the only reason for overwriting is if there
are wrong BIOS.
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