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=1793704032; b=wkDxwYLcrafhQNN6l2Dd2Q2uF3Fm5JI/Ay0xB3T3T78wuHAAbtq3wyi+lnOojf2m5zCd klDzkmn6VDk6FxRWE0SOoWzSHfWO6tkE1BI8j2sccLgy3tcznSNBl+iQFhjlZxfC54aL5 IFbehQjuaGRME4YD+y/8+K1GV9PSn9AWLck1CRBc2H2wPkdWVuhkZ2Fw6jQlk+g515So4 7hDjug0onSGEzg+r5Qx1PgEyY+A2XbzQPrwlIo3cyU2K2yEbDLrIt9/UMHWF/Kz9jVcOi Np2aDTcAj82041olgMlKRf//j5EgzIA6VdwRPG1yuvNazkO7hD0Ew81s6PBa8FVqaAg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793704032; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=VufiRBhB7eiuNM6tbNQyIOaETyuiGMibcekOp0wf2tU=; b=Doz9GS/wC8KXRq9tHRaZOShMsj8ZET1tasLGeqkw/FcWz6ht2CNQYMQnivLYEvcZvd/1 3uu9p+jg1JCN0/fvLc3ZDIRWFZK5LOLy1sxrUU7gzjFj1o8tKpfm5Kt8FmLBJD5WiCC/U zPeh/voPEmhg8NPE/W5VgKgh6vpI83kchel80BJFw1DhaUGNXmMPsDyiTWYGK3eyUz8dO pAaFPhGn0nxvlfhesBWV/V2YwSw/NHQCNnpYrQYUis0OIGyBtUUynOED/C8VcGdzn66O5 G0JoqQH5tM11G9HrMTTe012o+8istIfBxDULypXo/CT70ULYxy9a8AjnetgrHhxANbg== 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="TO0ClN/S"; 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 00FE36083627; Tue, 3 Nov 2026 11:07:11 +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=TO0ClN/S Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77D801F00A1A; Tue, 3 Nov 2026 11:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793704031; bh=VufiRBhB7eiuNM6tbNQyIOaETyuiGMibcekOp0wf2tU=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=TO0ClN/SjUHbftbHB7HjlAMa6Rr795JjSDfBLQp06b4khgmEe4GZFr+krjj5G+/Sr JdWCyXmFCWgKxUS7805ncPDhNNvne4+wwMzBjlibSO8ldFpSnambbew0BjPM0zUAj8 Dou/IM7emLf5H6/9C2ldzDfywSivRUJSh3OLwCYO0YRH0gVSSEM0zsIL45eIlPcrsj a2pJy/H8UPmMmS73RUKPuJ+ElUGpCtVEgjcQdchzyMVCXQwEo+U+xzZquVmx7YS0Le SCHX/xG5MvqbG3sC3gxqg7adSABWVTa/BjtWnFf9VYTzGwnGgulJrKqDAbkmxp4tGH ntxxwlqnvCCeQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v12 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: <20261103-fix-p2p-acs-v4-0-v12-14-912101f93517@nvidia.com> References: <20261103-fix-p2p-acs-v4-0-v12-0-912101f93517@nvidia.com> <20261103-fix-p2p-acs-v4-0-v12-14-912101f93517@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 03 Nov 2026 11:07:10 +0000 X-Mailing-List: linux-pci@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, > translation blocking, host allowlisting and packed cache values. Keep > external peers and self-DMA 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/20261103-fix-p2p-ac= s-v4-0-v12-0-912101f93517@nvidia.com?part=3D14