linux-kernel - Re: [PATCH v3 05/14] PCI/P2PDMA: Apply host bridge whitelist for ACS

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Message-ID: <20190816080914.GE9249@lst.de>
Date:   Fri, 16 Aug 2019 10:09:14 +0200
From:   Christoph Hellwig <hch@....de>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-rdma@...r.kernel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Christoph Hellwig <hch@....de>,
        Christian Koenig <Christian.Koenig@....com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Dan Williams <dan.j.williams@...el.com>,
        Eric Pilmore <epilmore@...aio.com>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH v3 05/14] PCI/P2PDMA: Apply host bridge whitelist for
 ACS

On Mon, Aug 12, 2019 at 11:30:39AM -0600, Logan Gunthorpe wrote:
> When a P2PDMA transfer is rejected due to ACS being set, we can also check
> the whitelist and allow the transactions.
> 
> Do this by pushing the whitelist check into the upstream_bridge_distance()
> function.
> 
> Link: https://lore.kernel.org/r/20190730163545.4915-6-logang@deltatee.com
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
> Reviewed-by: Christian König <christian.koenig@....com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>