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From: Bjorn Helgaas <helgaas@kernel.org>
To: Pratyush Anand <panand@redhat.com>
Cc: dongbo4@huawei.com, bhelgaas@google.com, jingoohan1@gmail.com,
	linux-pci@vger.kernel.org
Subject: Re: [PATCH 0/2] pcie/designware: Viewport assignment update
Date: Mon, 22 Aug 2016 13:49:15 -0500	[thread overview]
Message-ID: <20160822184915.GH18628@localhost> (raw)
In-Reply-To: <cover.1467647958.git.panand@redhat.com>

On Mon, Jul 04, 2016 at 09:44:41PM +0530, Pratyush Anand wrote:
> Most of the designware PCIe platforms have more than 2 viewports. So, patch
> 1/2 allows to fix viewport-2 for IO transaction for such cases.
> When we have only two viewports, then patch 2/2 exchange viewport
> assignment of memory and cfg transaction. It helps to fix a possibility of
> corruption for memory transaction. However, there still exist possibility
> of an IO transaction to be corrupted. We can not do much for <=2 viewports.
> See, patch log for detail.
> 
> Dong Bo (1):
>   pcie/designware: Exchange viewport of `MEMORYs' and `CFGs/IOs'
> 
> Pratyush Anand (1):
>   pcie/designware: Keep viewport fixed for IO transaction if
>     num_viewport > 2
> 
>  .../devicetree/bindings/pci/designware-pcie.txt    |  3 ++
>  drivers/pci/host/pcie-designware.c                 | 32 +++++++++++++++-------
>  drivers/pci/host/pcie-designware.h                 |  1 +
>  3 files changed, 26 insertions(+), 10 deletions(-)

Applied (with Rob's ack on 1/2) to pci/host-designware for v4.9, thanks!

      parent reply	other threads:[~2016-08-22 18:49 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-04 16:14 [PATCH 0/2] pcie/designware: Viewport assignment update Pratyush Anand
2016-07-04 16:14 ` [PATCH 1/2] pcie/designware: Keep viewport fixed for IO transaction if num_viewport > 2 Pratyush Anand
2016-07-04 16:14   ` Pratyush Anand
2016-07-05 16:23   ` Rob Herring
2016-07-05 16:23     ` Rob Herring
2016-07-04 16:14 ` [PATCH 2/2] pcie/designware: Exchange viewport of `MEMORYs' and `CFGs/IOs' Pratyush Anand
2016-08-22 18:49 ` Bjorn Helgaas [this message]

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