linux-kernel - Re: [PATCH 0/3] PCI: P2P bridge window fixes

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Message-ID: <CAErSpo7zprm-iHMRbCp0xh0so_ozqvN1uF8P4UhsDV5c0tu_nw@mail.gmail.com>
Date:	Mon, 9 Jul 2012 21:24:26 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	linux-pci@...r.kernel.org
Cc:	Yinghai Lu <yinghai@...nel.org>, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 0/3] PCI: P2P bridge window fixes

On Mon, Jul 9, 2012 at 2:31 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> Two fixes here:
>
> 1) Zero is a legal P2P bridge window base and BAR value and is likely to
> occur when there is an offset between bus addresses and CPU addresses.
> Stop disallowing it.
>
> 2) The Intel-specific 1K I/O window granularity for P2P bridges was
> implemented in a way that precluded reassignment of the window after
> FINAL quirks.  Fix that.
>
> And also replace the sparc pci_cfg_fake_ranges() with the functionally
> equivalent generic version.
>
> ---
>
> Bjorn Helgaas (3):
>       PCI: allow P2P bridge windows starting at PCI bus address zero
>       PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
>       sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
>
>
>  arch/sparc/kernel/pci.c  |   89 +---------------------------------------------
>  drivers/pci/probe.c      |   31 +++++++++-------
>  drivers/pci/quirks.c     |   39 +-------------------
>  drivers/pci/setup-bus.c  |   11 +++++-
>  include/linux/pci.h      |    1 +
>  include/linux/pci_regs.h |    3 +-
>  6 files changed, 31 insertions(+), 143 deletions(-)

I applied these, as well as Yinghai's patch for 1K support in
pbus_size_io(), to my "next" branch.  Thanks, Yinghai!

Bjorn
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