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=1794300640; b=oQjwihRIJZqkB0IVQOWRt4TfDLrKi/oDD7LzRX1j2T628PMRdY/TGje0UXgH/UnwAyHO aQuzLz68JFPsJG3WGOLKedPDfD+AzKaTjMkQEyRCV+W1OPvxP4+WfD3+SAwsRVBpi2b3Q ralvjS7f5j54B7elGOlvD5vOIWnTlDYGXUQHBvKzMK1PZd2lIgRSKP98sJRNO2Ug/7JcV wRGmNzski2Wqb1e+gLcpe7KU2rhB76IG8hHwu13Ho69lz3v3z/Eut204iD272/Lepvsdq ViPGiFlKQpga4AkSYISHIMi52uaKg6yfX0W7rCvBnGTCtTn1uKsVyiRwYvqwvJUAc9g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794300640; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=bmu09YCM3B0f7iPIV9QACx+8SnU/r/NTv5+O5dh4SDY=; b=nMxu70Jn+cgoqidq/tlDA2pySW8L+2keV8XVEnIf40Jmx9AYgYjm+ds3PruFYnJh2ihg 3/uDO4K3v9b3iopX2lTHY3SXfNjAKVJHnl+0RF8ZY001QatMUrZZnduFxuKLGmcGT27BH fUV8VDmpPTZczbs1eWEFHOj0KiTiRJTvpjkJbjHHqic1mpEdVuXF9fDf7OCRRdYSci0+R ty92nuqqDImuOa2y7ZA7K/6ZdtjmLphnMRQ4MpSeO+D2yXGGa1w9Ar/DdOdKkAuJO6g5C Yms46MTU7AL7GhUEuGnAcTqXXis7VW6Ka6QlM2GReiicZ5mYIBr8omHpPTLUL3QMoZw== 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="id/O6Juz"; 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 ADCFD606A31C for ; Tue, 10 Nov 2026 08:50:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=id/O6Juz Received: by smtp.kernel.org (Postfix) with ESMTPSA id 161971F0089F; Tue, 10 Nov 2026 08:50:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794300639; bh=bmu09YCM3B0f7iPIV9QACx+8SnU/r/NTv5+O5dh4SDY=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=id/O6JuzukFE/YEUPS+ndmObu5PkEu4an1Y5ZO96nsRLGfngkdJU93Ncb2XmpzMvu xL/Z1IN925FtCJ5rAvnnO0guxNVfz2FsjeBePA6BBQjqIQe9GSVC6FTHqpRloGZtBO F1zHIxq+FXJuWMmCUV61gpADtnYtyRAWunF/jj6pbO8YZhxtYSd0HpJRh2kDTD1pVl RjYN4GoELRzQHB7amL5cBYk/ghU0si6WeJnHoAgZ3R+VwJOsVysbhkUbP7pmMIyNv+ ucEcgrCGYgrGbqoWcAU80wUkQhNAjNgzut4cSMAVk4vIlMhO4oy+C7GGFNdGePe+P/ SwLRZ0RWqSqzQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v9 05/10] PCI: endpoint: pci-epf-vntb: Export endpoint DMA channels Reply-To: sashiko-reviews@lists.linux.dev To: "Koichiro Den" Cc: linux-pci@vger.kernel.org In-Reply-To: <20261110082459.1798763-6-den@valinux.co.jp> References: <20261110082459.1798763-1-den@valinux.co.jp> <20261110082459.1798763-6-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 10 Nov 2026 08:50:38 +0000 X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > An RC may use endpoint-local DMA read channels to transfer data directly > to an endpoint DMA address once both sides agree to use them. Quiescing > an unrolled eDMA channel disables its whole direction, so reserve the > complete read direction and route its interrupts to the RC when dma_bar > is configured. >=20 > Describe the controller and per-channel descriptor memory in a private > control-region extension. >=20 > Add a dma_bar configfs attribute. An explicit BAR selection enables DMA > export. Leaving it unassigned keeps the feature disabled. >=20 > Keep resources already assigned to a BAR in place, and map the rest > through the selected dma_bar. >=20 > Reviewed-by: Frank Li > Signed-off-by: Koichiro Den Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261110082459.1798= 763-1-den@valinux.co.jp?part=3D5