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=1793873876; b=VUQUqnwDguhXvzE837PV14P+GcG04Jv0dAQOu2JukLQpjTzDQlaGAHCkPaxPCocJi0/z pBT7rB1ziPR9MlBJXUxm+SwqDbHS8h+FLQ3GDprc8n4XLMJAk+++A1FQpZsS5JHCxGb96 uTQM//flAw1moiw1nXzkzY9CR78JAL4ZlWlJ3FPeA2LUwKvIPq0+I+bUaWxJxBP4JJXii ApRRnL5THY9JFo5je0J+YR6gkshRC4qyQXx/nDYRODsxkYJqbmol2SgqE0JbAS4nmket9 ejdVuywQPJH5Ib3ZxpLGz88dy7G37tUAey7AzDff9TGRUyifo7yb5ClC8ljljd5RpxA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793873876; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=CKlQQcu/bsNmWjxulbgTG1iIeFjRU6Z75waIx0GlYIA=; b=FAxqSlVpH9zvJJR2w+4xJsu5/gnHegIPbQnPfLPYdygpGve5B8dThp8lM1ow4yZX6lzc D7C9OkmtRGyD80e2FVEC+Pr1RB17G9wk8OzOtFiArGC33wGBsn+UJl1+U9gwZfeeJ9FUr BBswB56sRLC1CToBjXVG2z09IJqYDs1hITzkTrBf23I3VO791RylpnvgmVdgD8lv7Nr+9 j9GjU43i6p54+SPVoBfjvdTTUqdeydgEoWZMNacLFCA2WEYmm1zosJ0Oc1ILR0uUQqZOD ENyQX29nc0jMEZJj5R6B1XM0XdgUdBg8Pzl6Aq/xX9Lw2EoJOtzM45Y2leP0VeIgBDA== 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=GN5nWIDF; 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 C40C2606A329; Thu, 5 Nov 2026 10:17:55 +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=GN5nWIDF Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B2591F00A02; Thu, 5 Nov 2026 10:17:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793873875; bh=CKlQQcu/bsNmWjxulbgTG1iIeFjRU6Z75waIx0GlYIA=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=GN5nWIDFBg9H+7J4LRhZkgfTStoUxzmiqa6/dleOvJ1rgsTuyyKHsNWLkcuwG3vla sA9ox5uF0S0/mdqy+tEM9PbLX3iIFV+7wZHv8+MEErQV0MWtHwd3SYDV66nd8WSgm9 P/bFKVUM4UHakVqHORIZeU+eQrJ/M6Xpj8tRoYjAglhjfLiP9KZt3ipk9qcmrIhZCN sQY6wpjDuPEdzFLhLULhAE5bWKw66sn3BV6/CmxRXMdZ8pCj7d6B7qPy/O4z6Q1VgX wt991pO6jW5od171qrF4msCavolZhFhMDkHUiHmlPPFZ84aWWXD5IWqXgQRQqy4imx EBL544wqb8P+Q== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v13 14/19] PCI/P2PDMA: Test the ACS P2P routing walk 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-v13-14-3dd065907c3b@nvidia.com> References: <20261105-fix-p2p-acs-v4-0-v13-0-3dd065907c3b@nvidia.com> <20261105-fix-p2p-acs-v4-0-v13-14-3dd065907c3b@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 10:17:54 +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 > Routing depends on which ports share each path, not just individual ACS > registers. Sibling functions without internal peer routes must use the ho= st > bridge even when redirect controls read as zero. >=20 > Drive the walk over fabricated switch and multifunction topologies with > fake configuration space. Cover directional controls, nested ports, TLP > attributes, hardwired isolation, ARI, PF/VF paths, forwarding failures > above shared links and switches, Intel PCH register layouts, translation > blocking, host allowlisting and packed cache values. Keep direct classes > usable when forwarding is unavailable, and keep external peers and self-D= MA > independent of sibling routing restrictions. >=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=3D14