From: sashiko-bot@kernel.org
To: "Leon Romanovsky" <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org, kvm@vger.kernel.org,
linux-pci@vger.kernel.org, media-ci@linuxtv.org,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v9 10/18] PCI/P2PDMA: Route Translated Requests under Direct Translated P2P
Date: Thu, 01 Oct 2026 12:02:42 +0000 [thread overview]
Message-ID: <20261001120242.70F261F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20261001-fix-p2p-acs-v4-0-v9-10-1a8e0f50ddd9@nvidia.com>
> From: Leon Romanovsky <leonro@nvidia.com>
>
> A Downstream Port with ACS Direct Translated P2P enabled routes a Request
> whose Address Type is Translated "to the peer Egress Port without
> redirection, regardless of ACS P2P Request Redirect and ACS P2P Egress
> Control", per PCIe r7.0 sec 6.12.3. P2PDMA assumes every Request carries an
> Untranslated address, so it sends an ATS client through the host bridge
> even where the fabric would route it straight to the peer.
>
> Add PCI_P2PDMA_TLP_TRANSLATED and consult Direct Translated P2P for the
> Requests it describes.
>
> Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
> Tested-by: Tushar Dave <tdave@nvidia.com>
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261001-fix-p2p-acs-v4-0-v9-0-1a8e0f50ddd9@nvidia.com?part=10
next prev parent reply other threads:[~2026-10-01 12:02 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 11:55 [PATCH v9 00/18] PCI/P2PDMA: Route peer-to-peer DMA by TLP class Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 01/18] PCI/P2PDMA: Document the TLP attribute assumptions Leon Romanovsky
2026-10-01 11:58 ` sashiko-bot
2026-10-07 20:12 ` Bjorn Helgaas
2026-10-12 11:02 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 02/18] PCI/P2PDMA: Derive routing from directional ACS controls Leon Romanovsky
2026-10-01 12:03 ` sashiko-bot
2026-10-06 20:49 ` Bjorn Helgaas
2026-10-07 6:32 ` Leon Romanovsky
2026-10-07 20:40 ` Bjorn Helgaas
2026-10-09 17:43 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 03/18] PCI: Reject unreadable ACS controls in isolation checks Leon Romanovsky
2026-10-01 12:05 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 04/18] PCI/P2PDMA: Evaluate ACS controls at the path divergence Leon Romanovsky
2026-10-01 12:02 ` sashiko-bot
2026-10-06 21:08 ` Bjorn Helgaas
2026-10-07 10:51 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 05/18] PCI/P2PDMA: Document directional ACS routing Leon Romanovsky
2026-10-01 11:59 ` sashiko-bot
2026-10-01 15:25 ` Leon Romanovsky
2026-10-06 21:32 ` Bjorn Helgaas
2026-10-07 13:46 ` Leon Romanovsky
2026-10-07 20:10 ` Bjorn Helgaas
2026-10-01 11:55 ` [PATCH v9 06/18] PCI/P2PDMA: Collect the path's ACS controls before deciding Leon Romanovsky
2026-10-01 12:01 ` sashiko-bot
2026-10-06 21:48 ` Bjorn Helgaas
2026-10-07 13:50 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 07/18] PCI/P2PDMA: Answer routing per TLP class Leon Romanovsky
2026-10-01 12:02 ` sashiko-bot
2026-10-09 21:25 ` Bjorn Helgaas
2026-10-12 11:57 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 08/18] PCI/P2PDMA: Route Relaxed Ordering Completions directly Leon Romanovsky
2026-10-01 12:04 ` sashiko-bot
2026-10-06 22:21 ` Bjorn Helgaas
2026-10-12 10:57 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 09/18] PCI/P2PDMA: Reject Translated Requests blocked by Translation Blocking Leon Romanovsky
2026-10-01 12:04 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 10/18] PCI/P2PDMA: Route Translated Requests under Direct Translated P2P Leon Romanovsky
2026-10-01 12:02 ` sashiko-bot [this message]
2026-10-06 22:28 ` Bjorn Helgaas
2026-10-12 11:53 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 11/18] PCI/P2PDMA: Log detailed ACS routing diagnostics Leon Romanovsky
2026-10-01 12:06 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 12/18] PCI/P2PDMA: Add KUnit tests for the ACS routing decisions Leon Romanovsky
2026-10-01 12:01 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 13/18] PCI/P2PDMA: Test the ACS P2P routing walk Leon Romanovsky
2026-10-01 12:07 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 14/18] PCI: Add KUnit coverage for ACS isolation checks Leon Romanovsky
2026-10-01 12:02 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 15/18] PCI/P2PDMA: Document TLP-class routing Leon Romanovsky
2026-10-01 11:58 ` sashiko-bot
2026-10-01 11:55 ` [PATCH v9 16/18] PCI/P2PDMA: Let a client declare that it selects ATS per mapping Leon Romanovsky
2026-10-01 12:08 ` sashiko-bot
2026-10-01 12:59 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 17/18] PCI/P2PDMA: Evaluate the ATS path for clients with ATS enabled Leon Romanovsky
2026-10-01 12:07 ` sashiko-bot
2026-10-01 15:23 ` Leon Romanovsky
2026-10-01 11:55 ` [PATCH v9 18/18] PCI/P2PDMA: Test the routing of " Leon Romanovsky
2026-10-01 12:04 ` sashiko-bot
2026-10-06 19:29 ` [PATCH v9 00/18] PCI/P2PDMA: Route peer-to-peer DMA by TLP class Bjorn Helgaas
2026-10-06 21:22 ` Leon Romanovsky
2026-10-06 21:36 ` Bjorn Helgaas
2026-10-07 6:56 ` Bjorn Helgaas
2026-10-07 10:54 ` Leon Romanovsky
2026-10-07 11:31 ` Bjorn Helgaas
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