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=1793702708; b=uaSKJxWJQMmTqlkjOmHlWboMtakiN6AJ/I3QJVkjcImiv/vWJuz8Jh9aLKtHx6R0Zu9b PPQ7WkiegI4v8O1971HzYMILsmVek1YDWfWzIBD54unIepJpiA8jAvB+5ki9x96ax8KKB k7oy5x5RUKDvoY8mt3rYAizm7k90qlaad3GrqYOE8OsqV2kfJN9h1LXoQ91i7Ji/Z9Ab9 9T4TZ3Day0j6FQtVDk1qZFmhSGb00GlqWxmMfsAf6Hbjh/qQbHn0tUNHHLLstZgCmE7GX 0vf6N1h6WYGWyBTsyyCK+PgXWG6x/YcEpYU4KZ3FFcUn4Tr/JYejCt+6wQ925qf+LBw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793702708; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=qnS50xnySAL/6F0jbhmiWNpPeJrO3ISpGQeuKxN4ZQY=; b=a11BMtbVnNfyJyXEWCikr8MQ1E3OZ6Ulo56hWFt//1ImMlo+l07KHDLlXl2tDKxk4dLN NqdWi3wKytjrr75YpCSxHF9wZyr8VElVYWB4xv0nfbXCnuPEaY+z8/yo1e165MLzrUDB0 MI9cyuWfOi6p8/U8uqgzfT3UD/Z9TOky3P4IxkhhnTRm2lFQyNu8OAsrvk2CU2TUCUki0 zKX/PxiiY6ETctoDpmLrIHmZzc2KLxvYzexfsiqusZkPBm4u3knurW/pVkY+/AWJfsAdk q3Voj2vAhkuhcqcm7N/TjjU/MsEVXMK7m87ELUDVcLiq17cjktbOgvNzII71bo4a8Sg== 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=ZahngiXW; 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 7EB5660700A9; Tue, 3 Nov 2026 10:45:08 +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=ZahngiXW Received: by smtp.kernel.org (Postfix) with ESMTPSA id D671C1F00919; Tue, 3 Nov 2026 10:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793702708; bh=qnS50xnySAL/6F0jbhmiWNpPeJrO3ISpGQeuKxN4ZQY=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=ZahngiXWtOzdD9btYHY2QEX7lG02wm0jFp1z6fypAdYkNQGyHqU1l1+7IYcfibP+w UCL3jCFhzOBN4WpnLkS5YHEZ5jaCnt+oZlCRiwuGbC/Mt59y+zEnxP1sT8JlNmVnbZ 9M4dvMS3F+Bh3levPj5B+xmMjTCzuufpewvndiwMXs7qJBIvUKJdbv8Iz1B3XUV7ZO 0YYHV1/y25oQSeJ4i4ktyNdWanUWR0wEnvP1RbvliOinnICyitt/qJ57I2LQmolTkz FY61wBNRj7Ui+UULXaq41Bm3BcDraFENkGpPWhmr4+hWli6FisIS3VMCICj5vPNdZo RORfz9yul/5Ig== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v12 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: <20261103-fix-p2p-acs-v4-0-v12-11-912101f93517@nvidia.com> References: <20261103-fix-p2p-acs-v4-0-v12-0-912101f93517@nvidia.com> <20261103-fix-p2p-acs-v4-0-v12-11-912101f93517@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 03 Nov 2026 10:45:07 +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/20261103-fix-p2p-ac= s-v4-0-v12-0-912101f93517@nvidia.com?part=3D11