From: sashiko-bot@kernel.org
To: "Leon Romanovsky" <leon@kernel.org>
Cc: linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org
Subject: Re: [PATCH v13 07/19] PCI/P2PDMA: Collect the path's ACS controls before deciding
Date: Thu, 05 Nov 2026 10:15:19 +0000 [thread overview]
Message-ID: <sashiko-outbox-198827@kernel.org> (raw)
In-Reply-To: <20261105-fix-p2p-acs-v4-0-v13-7-3dd065907c3b@nvidia.com>
> From: Leon Romanovsky <leonro@nvidia.com>
>
> calc_map_type_and_dist() combines ACS reads, routing decisions and
> diagnostics. Adding decisions for different TLP attributes would duplicate
> the walk or thread each attribute through its counters.
>
> Collect the divergence controls, internal-route restrictions and upstream
> forwarding state in struct pci_p2pdma_acs_path, then decide each direction
> from it. Check shared forwarding ports only when a host route is needed,
> and keep forwarding read failures separate so they do not suppress
> redirect advice.
>
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261105-fix-p2p-acs-v4-0-v13-0-3dd065907c3b@nvidia.com?part=7
next prev parent reply other threads:[~2026-11-05 10:15 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 10:04 [PATCH v13 00/19] PCI/P2PDMA: Route peer-to-peer DMA by TLP class Leon Romanovsky
2026-11-05 10:04 ` [PATCH v13 01/19] PCI/P2PDMA: Honor device-specific ACS redirection Leon Romanovsky
2026-11-05 10:26 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 02/19] PCI/P2PDMA: Document the TLP attribute assumptions Leon Romanovsky
2026-11-05 10:15 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 03/19] PCI/P2PDMA: Derive routing from directional ACS controls Leon Romanovsky
2026-11-05 10:21 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 04/19] PCI: Reject unreadable ACS controls in isolation checks Leon Romanovsky
2026-11-05 10:13 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 05/19] PCI/P2PDMA: Evaluate ACS controls at the path divergence Leon Romanovsky
2026-11-05 10:21 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 06/19] PCI/P2PDMA: Document directional ACS routing Leon Romanovsky
2026-11-05 10:11 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 07/19] PCI/P2PDMA: Collect the path's ACS controls before deciding Leon Romanovsky
2026-11-05 10:15 ` sashiko-bot [this message]
2026-11-05 10:04 ` [PATCH v13 08/19] PCI/P2PDMA: Answer routing per TLP class Leon Romanovsky
2026-11-05 10:22 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 09/19] PCI/P2PDMA: Route Relaxed Ordering Completions directly Leon Romanovsky
2026-11-05 10:12 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 10/19] PCI/P2PDMA: Reject Translated Requests blocked by Translation Blocking Leon Romanovsky
2026-11-05 10:18 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 11/19] PCI/P2PDMA: Route Translated Requests under Direct Translated P2P Leon Romanovsky
2026-11-05 10:14 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 12/19] PCI/P2PDMA: Log detailed ACS routing diagnostics Leon Romanovsky
2026-11-05 10:19 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 13/19] PCI/P2PDMA: Add KUnit tests for the ACS routing decisions Leon Romanovsky
2026-11-05 10:16 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 14/19] PCI/P2PDMA: Test the ACS P2P routing walk Leon Romanovsky
2026-11-05 10:17 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 15/19] PCI: Add KUnit coverage for ACS isolation checks Leon Romanovsky
2026-11-05 10:17 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 16/19] PCI/P2PDMA: Document TLP-class routing Leon Romanovsky
2026-11-05 10:16 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 17/19] PCI/P2PDMA: Let a client declare that it selects ATS per mapping Leon Romanovsky
2026-11-05 10:17 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 18/19] PCI/P2PDMA: Evaluate the ATS path for clients with ATS enabled Leon Romanovsky
2026-11-05 10:34 ` sashiko-bot
2026-11-05 10:04 ` [PATCH v13 19/19] PCI/P2PDMA: Test the routing of " Leon Romanovsky
2026-11-05 10:20 ` sashiko-bot
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