From: Bjorn Helgaas <helgaas@kernel.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Logan Gunthorpe <logang@deltatee.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jens Axboe <axboe@kernel.dk>, Chaitanya Kulkarni <kch@nvidia.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Ankit Agrawal <ankita@nvidia.com>,
Alex Williamson <alex@shazbot.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Tushar Dave <tdave@nvidia.com>, Jason Gunthorpe <jgg@nvidia.com>
Subject: Re: [PATCH 5/5] PCI/P2PDMA: Gate the host bridge whitelist warning on verbose
Date: Tue, 8 Sep 2026 21:18:59 -0500 [thread overview]
Message-ID: <20260909021859.GA159841@bhelgaas> (raw)
In-Reply-To: <20260830-batch-p2p-fixes-v1-5-5044e8dfbe2e@nvidia.com>
On Sun, Aug 30, 2026 at 02:16:23PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@nvidia.com>
>
> calc_map_type_and_dist() prints every other diagnostic under its verbose
> argument, but reaches the "Host bridge not in P2PDMA whitelist" warning
> through host_bridge_whitelist(), which it hands acs_redirects instead.
> A caller that asked for a silent answer still gets the warning whenever
> any port on the path has an ACS redirect bit set, the CPU is not
> whitelisted by cpu_supports_p2pdma(), and the host bridge is not in
> pci_p2pdma_whitelist[].
Not in this series, but I would like to see the "whitelist" term
removed from drivers/pci. p2pdma.c and pci-pf-stub.c are the only
current uses, and I don't think a change would cause any API issue.
There are similar "blacklist" uses in pci.c, aspm.c, and vpd.c.
next prev parent reply other threads:[~2026-09-09 2:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-30 11:16 [PATCH 0/5] Batch of PCI peer-to-peer fixes Leon Romanovsky
2026-08-30 11:16 ` [PATCH 1/5] PCI/P2PDMA: Do not tear down the allocate attribute on registration failure Leon Romanovsky
2026-08-30 11:16 ` [PATCH 2/5] PCI/P2PDMA: Wait for RCU readers before freeing state Leon Romanovsky
2026-08-30 11:16 ` [PATCH 3/5] PCI/P2PDMA: Restrict the p2pmem search to pool backed providers Leon Romanovsky
2026-08-30 11:16 ` [PATCH 4/5] PCI/P2PDMA: Safely terminate ACS redirect lists Leon Romanovsky
2026-08-30 11:16 ` [PATCH 5/5] PCI/P2PDMA: Gate the host bridge whitelist warning on verbose Leon Romanovsky
2026-09-09 2:18 ` Bjorn Helgaas [this message]
2026-09-10 15:25 ` Leon Romanovsky
2026-09-08 5:54 ` [PATCH 0/5] Batch of PCI peer-to-peer fixes Leon Romanovsky
2026-09-09 2:16 ` Bjorn Helgaas
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