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=1794578431; b=Jik5/sHAgbHU2BgZLk9Vzi5zRsAgjBuNnrkXOyAK3my6BSMouf7DAriZVHRZWl0+4XdZ eZSPLvNEJ5xEJuhRcJxhF+nt3RTtycu1dyxlfO5Sw4ENr1ntaDMToHnwLGJsG39SyHeRK YXQm9zI4IZFhS85YEl6Ta2kC21j1ySmg0aD1pPtkrUNTIkiOjDkR7y0pfuXx1puVvC+gm HfL47JPpfrgL3J/hRoLAoR9dpCZvMnMmgAqTNRYmoo6yv8NhqplJ/DEP4lJ3EsAhzx3/E UUoH77FlMWL2fpQOga3lu7NVF0l54mC01Tvtu/kpzgD48kPy7fFKng8zNA0JgNYdyiQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794578431; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=/8c1fTcxUx309d6lNsioFI28hznPcne6U2gkParSE1Q=; b=c1psIddwtNMg18rbRKpv5BpxlFo/Pm7klMb3qh5Rc3LPI/c8kyfdvQUmRpUlhooarcVc uL8rZkps+lebHRPxiAX9WMAK0lfqVFiCzU/3p1xUmw1iNQcLVwEeLpJjCPGXcRYFGfO1O 4+nuHnWv0OlOtWcUWkMjHKJ7TIxFMZRg/rNJsiQlDJBvOPtGq7fL3HE2LeQVh4DHzB5f1 UFJU6h0oLbAAuDA4ter/dYneHIY/orNWCg31aUzi7415Idw5bqC2IW2Ba7azC1pEqHA9L Tqrxj0iNAjEGxNBRhPsG2LcBQ5LabZcNaZYKKE58IgbSh9oDxbd5Dggg9PVGJcYdk0w== 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=Br8weBF+; 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 76343606A33E for ; Fri, 13 Nov 2026 14:00:31 +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=Br8weBF+ Received: by smtp.kernel.org (Postfix) with ESMTPSA id F420B1F000C4; Fri, 13 Nov 2026 14:00:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794578431; bh=/8c1fTcxUx309d6lNsioFI28hznPcne6U2gkParSE1Q=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=Br8weBF+zgWFCDPsAf7wDXFTn6+LvvlJlfsaq2HObJWs6eodhT1VvzonJu5ion84d cfwkoff4FwUKMtAadINd9lDARMLScbcba+cMPQWxqi1iuMlewsocUA8MUp1zLMNS8g fO9TmO95hB8FGzNXhnOXGEaNM01LePV0WdBoWx+gutENlxxabUefmkbzIU8222vbBS OBo8VCdzBHgreWcjozHtIur7sTBStECUmjTS0ZSLb+shXZJrDKb2Aj80odsECtC8tM v6qvg6dxY8UUNxstNuJo4Ku12PSlKVEzfveVbgcYmeo+atQlHjWBnFqqWQDUnnq9DH rXoXtcNxekJMg== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v10 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: <20261113132935.4152566-6-den@valinux.co.jp> References: <20261113132935.4152566-1-den@valinux.co.jp> <20261113132935.4152566-6-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 13 Nov 2026 14:00:30 +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/20261113132935.4152= 566-1-den@valinux.co.jp?part=3D5