From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C5B2413C8EA for ; Wed, 26 Mar 2025 15:16:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743002161; cv=none; b=aG90lGs5DCH5iiPgK+CeVerXxmWZNh8rGX0TqL2emHKo6DKhz7y1ALriv/uWtCFNf5ZZTfi44Q17cynCyR8J5EYfkEmBE+dVNl/lX2/Nk2ANudQEV2ARXc/LMoyIc7CeRpnrKWoAkVgh68Gbm0L1l6dhKjFlgzvNgWTxdZMimWY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743002161; c=relaxed/simple; bh=pRe/Us8yRQHDlKQLHSWJ7A5NovV1DYDJYNZQ7w5XL9E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bJe5FPZJrE2P6WodO/qLA5Yt4csjRtxScRMqL4n579p4LezedJ6/+AVlgENPO0AdhOXVEJ7QxFeILKs9kA2nPyR3WmSJIxbby8+zxpFx5t8OM/m5JSt1jKOxi+ejgeps19fQGB7+3wzGmE/NjRFCkDLLXYLSnrU/L12p4Ketslc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bcPsi9Eo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bcPsi9Eo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93F50C4CEE2; Wed, 26 Mar 2025 15:16:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743002161; bh=pRe/Us8yRQHDlKQLHSWJ7A5NovV1DYDJYNZQ7w5XL9E=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=bcPsi9EoySYtvkMWBZ/qmmyF65AfxE4JSnKRcZW1k92O3wWKAWwLjQVs/hudWmVou P8g6FZRaaT9Y81y9LPQnEjTtJlnO4is8A/B+eFohIw/1+jshfMrX5RRIYDhEg0Ix4n vPHedi3FUWM1L32RCVgXRYjoT39X08ALaQHahLDXaqSbcsxeS8bPEA/DF6NprCAxmq Qfz+a2RAJGRKA8AQ26x4cIgo10iUZHSBo/vpytMh7Mj6jgp9LJJ8wiwaE2Fi7INwBh /yuw4CKRvsg7pIBJrbbWW7n4Gj5+CyFrUI4TOxWCYbcurZESAcgBjyUwkOBG2nqB6k 7Il54AKH9liBA== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1txSU7-000000007cw-16XN; Wed, 26 Mar 2025 16:16:03 +0100 Date: Wed, 26 Mar 2025 16:16:03 +0100 From: Johan Hovold To: Jeff Johnson Cc: Johan Hovold , Jeff Johnson , Stephan Gerhold , ath12k@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] wifi: ath12k: extend dma mask to 36 bits Message-ID: References: <20250321162331.19507-1-johan+linaro@kernel.org> <8edf77d9-1afd-402a-b966-d1b3e5b4ba1b@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8edf77d9-1afd-402a-b966-d1b3e5b4ba1b@oss.qualcomm.com> On Wed, Mar 26, 2025 at 08:11:11AM -0700, Jeff Johnson wrote: > On 3/21/2025 9:23 AM, Johan Hovold wrote: > > Extend the DMA mask to 36 bits to avoid using bounce buffers on machines > > without an iommu (under OS control) similar to what was done for ath11k > > in commit dbd73acb22d8 ("wifi: ath11k: enable 36 bit mask for stream > > DMA"). > > > > This specifically avoids using bounce buffers on Qualcomm Snapdragon X > > Elite machines like the Lenovo ThinkPad T14s when running at EL1. > > > > Note that the mask could possibly be extended further but unresolved DMA > > issues with 64 GiB X Elite machines currently prevents that from being > > tested. > > > > Also note that the driver is limited to 32 bits for coherent > > allocations and that there is no need to check for errors when setting > > masks larger than 32 bits. > > > > Tested-on: WCN7850 hw2.0 WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 > > > > Signed-off-by: Johan Hovold > > --- > > Please make sure to include linux-wireless for all ath.git patches so that > they are processed by patchwork.kernel.org Ok, I'll try to remember that, but it seems you need to update MAINTAINERS to include that list: $ scripts/get_maintainer.pl 0001-wifi-ath12k-extend-dma-mask-to-36-bits.patch Jeff Johnson (supporter:QUALCOMM ATH12K WIRELESS DRIVER) ath12k@lists.infradead.org (open list:QUALCOMM ATH12K WIRELESS DRIVER) linux-kernel@vger.kernel.org (open list) Do you want me to resend? Johan