From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3BF29CA5FCB for ; Thu, 1 Oct 2026 12:02:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 90F9910F0C3; Thu, 1 Oct 2026 12:02:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="FDyw4QA6"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id B6CCD10E252 for ; Thu, 1 Oct 2026 12:02:21 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 730F64126C; Thu, 1 Oct 2026 12:02:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B2F81F00898; Thu, 1 Oct 2026 12:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790856141; bh=J7Fz2fGdas5nxrosVdDGPjVhOboZiCIyF6h6TA5VWQg=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=FDyw4QA6zHe1gLo+paZPiy4GOkYwGI8cjysK+I1ZvtKGxLf4xIVSswWH9uaWHxxeX P7kG48C9DNacdZEzaqhc8nY/tnAO0aIfX0xHH4JTr4WjitnChcZZgzEUT4GlAg8jQ+ EnFYNqaVLVdOpMKAj1jpR5HJpvUul/dArhQqQz2qKOrHHjyRKd5isTtwV7jFe49s0H rx7O9l6nZqLW5ctriMbSQMk61I8d68bYiq9tsTp7lUIqbYPHGHxXIOQ8XcwqV/9xYi Afn4j9EpPvbABjgSJURsx2Q3+XMLOWZyQZsy8WNlyFX1dzyMIKOtONjLlDTwZ+LmpS JtVinbG1S/D3g== From: sashiko-bot@kernel.org Subject: Re: [PATCH v9 04/18] PCI/P2PDMA: Evaluate ACS controls at the path divergence To: "Leon Romanovsky" Cc: linux-rdma@vger.kernel.org, media-ci@linuxtv.org, kvm@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-pci@vger.kernel.org In-Reply-To: <20261001-fix-p2p-acs-v4-0-v9-4-1a8e0f50ddd9@nvidia.com> References: <20261001-fix-p2p-acs-v4-0-v9-0-1a8e0f50ddd9@nvidia.com> <20261001-fix-p2p-acs-v4-0-v9-4-1a8e0f50ddd9@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 01 Oct 2026 12:02:20 +0000 Message-Id: <20261001120221.0B2F81F00898@smtp.kernel.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" > From: Leon Romanovsky >=20 > ACS redirect controls choose between peer and upstream routes only at the > path divergence. Applying them below that point rejects valid nested > topologies because traffic already has only an upstream route. >=20 > Evaluate Request controls on the client-side divergence port and Completi= on > Redirect on the provider-side port and reject an unreadable ACS Control > register. >=20 > Fixes: 52916982af48 ("PCI/P2PDMA: Support peer-to-peer memory") > Reviewed-by: Logan Gunthorpe > Tested-by: Tushar Dave > Signed-off-by: Leon Romanovsky Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261001-fix-p2p-ac= s-v4-0-v9-0-1a8e0f50ddd9@nvidia.com?part=3D4