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=1793873518; b=K1XuQLjTqEopFJ6AenhHzNjatKzWcqD8JiR/5cEMlTXMTKRkw+A2/4P48lZM5LPO3Bc6 LNTBwjMUEBKktbWfg4Nq+d6HdFEROWTmfBNIeD0kmkjm/9NSs4Y5Yovkpd9CZ1xTJaX/A FYMIYtoSbHYYvHwIpq0vVs/Ao6IM6vI4DI8TUelvuM2KojnHff0wTiboCSne7NFlbMaQQ tOPBCXvkXtEOnQ/xmEPfiIIBiHUHVuhws6S8T1pLLUE1GBLeeCy1cqXVY5BIBRHlaTdG2 jepmcSzM58e3pJe63MCdfWABZXAWDDuyJbfOSnwo9qZg6hSD0UMvhxcttOKlbG6V5Yw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793873518; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=QuKK9QKD88egRoEiPff5CwHsj/iKSCv/MI/iRQBX8xE=; b=XGkp8kb0qCFxRJ2XfMPoH0IviQcya5YGSa7PqbE2sr4qJilTEVgaywUPwSS28NGeqRD7 O72pruSdSJlKO8vB7XgzDkZ4138ju+OLN8zlUiDDKvYe8E9pIdCG3kzExoScfEh3uAkXm EIKanNya1rcu7IudPP+FLOpDwlxCSvmC7370SQ8dlaxkttOBQD6fviGwBZPHbpEtbH73+ d4FoK9DdsEMlgJava/BdZTtHieyoXlJUxGWxA/6zOZ8okqp/xlyRBxvvRLWESE84Tc3Xk ouW4AdKX+jBdfsD+Aw9PvB59WbVTFdC6ulu8TlN9g3LvW0FR8QRoKNTE7x//Ft+xekg== 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=c1DA15X0; 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 7719D606A336; Thu, 5 Nov 2026 10:11:58 +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=c1DA15X0 Received: by smtp.kernel.org (Postfix) with ESMTPSA id D942F1F000C1; Thu, 5 Nov 2026 10:11:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793873518; bh=QuKK9QKD88egRoEiPff5CwHsj/iKSCv/MI/iRQBX8xE=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=c1DA15X0t8oUic2cKMFbgNE9q1/1WHi6H/32wiXgsJqiuEzzgopUSEgPYq8RdMtnT dUYGeVu37QctJTs2B9CAaC46uHTYMMC4oz3c5DOkV7wTV/96JYhnQKJJgzpV5jAAn6 40r5azCyQu0qf5rYAMpOEuHsENMVqq7qge6SRK+Xa9Zmd5kF++wg85uqRP7m6CUC3m 9gqg62ii+U1WeyLxNwB4DczA+wFdNMdG9LVA4IBHijop6NfpLGrLzm55o/31NyPlLA dAdLruJZFfO86H6SJVGXLwqd+Qmp22fB2eSu4pk4ml5Nk1feVXAA2cZ3dXGnD5WWLx mwhAgHNZXANkA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v13 06/19] PCI/P2PDMA: Document directional ACS routing 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-v13-6-3dd065907c3b@nvidia.com> References: <20261105-fix-p2p-acs-v4-0-v13-0-3dd065907c3b@nvidia.com> <20261105-fix-p2p-acs-v4-0-v13-6-3dd065907c3b@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 10:11:57 +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 > P2PDMA documentation describes ACS controls as path-wide, although Request > and Completion controls apply to different transaction directions at the > path divergence. Functions sharing one PCIe link may instead have no > internal peer route even with redirect controls clear. >=20 > Document the Requester and Completer roles, the directional controls and > the forwarding requirements at shared ancestors for host routes. Explain > that unusable forwarding leaves direct routes available, while clearing > redirect controls cannot create an unsupported internal sibling route. >=20 > 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=3D6