From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793873690; b=yzjYeOZTWQt5zHlBez4L3uZIDvf9zkRztQkB8H1H3JwGjIwCDhtIbHl+bM/N3kVhIH/7 T4X2hCvu0fnWKoj+5DdgM1mTxeqBe/GaeD0lbEdJzx7w4GlGM9sd3gXFGyIWJxHqYjlzm mG/M8O3k/tqmWAoDkJ1aY4x72lxjDJpEtnN7O8PfjeIvRLUuWWhfmgT/vWov8qj31dMsv I9SfTN5zEN66EG4aol0D+QWk6at1r6U1D7WTI5CMx9iy7Z/8TgzNuG2jseD0mvxqg3cEG gL/3Ha0qZPNrLkMxcR1nsjWYaQeuu0lVh7eqk55vKlvV4H7U7CLgt/00rqOJQ5O7yew== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793873690; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=CYYFIwuIDggklTvJ5pkhzsoy3a1GnhIAHhHZ0/5ECyc=; b=L9V/c15XEuszgTWUwOg/+W8k5SMQGChBR61bRgIfaibhz3WqL8mWFkZ3CwR7BCVidByu izdOibh2E0DiIGeQG1zyNr8Ce2Apm4ZYEsWfZkKxK03W04Mt2fAQZ1+E/k0t9J3phLa3z 5TkL66qQMSN92cbZTEWLAlrjcUg10MO//GfFwh+ZHpRDfXG856A2NJaKTICrauGVtFlvK 2umxisBg+stmTaFG3rvh8P5WmwMyTdjlrYMNZzrCp2TE/DFlDq4ajQrFbLxHTpvT3Up3a yWBqCBYji4yKGbLPAQ9mc2WkgBb8qWQD8d0byMz6VpBIJB+4fHYlMYvsZNXKsO/4vBQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=mqODm4q8; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 08129606A33B; Thu, 5 Nov 2026 10:14:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=mqODm4q8 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 724891F000C1; Thu, 5 Nov 2026 10:14:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793873689; bh=CYYFIwuIDggklTvJ5pkhzsoy3a1GnhIAHhHZ0/5ECyc=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=mqODm4q8HN1d1UzIe1PRjV+mMNsgDaLtXAGt0CiybA9428vphIDS7LMWSa1Zpv5eX bybx5KZCc83UOIJIU5+rpL+s338FIXGvzINp/LwjEOGTbLglwPWPIKG1ubrJyWqUAu ZoxTTW4rlygmPbN//ZaxlH75m3UIH2kwoODBu1w1wOA0ERqMUs1OTEAslm7vcOIeOw sVvzna7DyQ2eJJaCMLwlbfxnEiCExxCPzM3TY2dT7Mk1/7xp359Lh5l0cVTdqgCN14 9xtWZUqInDy+NizG6L32u9Gkqjalc0HBJEqMh7KvSwI7FA176S95n5ebGCLmFGQ+zC 8jdj2lrTjT4qA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v13 11/19] PCI/P2PDMA: Route Translated Requests under Direct Translated P2P Reply-To: sashiko-reviews@lists.linux.dev To: "Leon Romanovsky" Cc: linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org In-Reply-To: <20261105-fix-p2p-acs-v4-0-v13-11-3dd065907c3b@nvidia.com> References: <20261105-fix-p2p-acs-v4-0-v13-0-3dd065907c3b@nvidia.com> <20261105-fix-p2p-acs-v4-0-v13-11-3dd065907c3b@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 10:14:49 +0000 X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Leon Romanovsky >=20 > 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. >=20 > Consult Direct Translated P2P for the PCI_P2PDMA_TLP_TRANSLATED classes. >=20 > Reviewed-by: Logan Gunthorpe > Tested-by: Tushar Dave > Signed-off-by: Leon Romanovsky Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261105-fix-p2p-ac= s-v4-0-v13-0-3dd065907c3b@nvidia.com?part=3D11