Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94B4FC636D3 for ; Mon, 30 Jan 2023 20:08:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236800AbjA3UIn (ORCPT ); Mon, 30 Jan 2023 15:08:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238045AbjA3UIf (ORCPT ); Mon, 30 Jan 2023 15:08:35 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 886B132E5C for ; Mon, 30 Jan 2023 12:08:33 -0800 (PST) Received: from notapiano.myfiosgateway.com (unknown [IPv6:2600:4041:5b1a:cd00:524d:e95d:1a9c:492a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nfraprado) by madras.collabora.co.uk (Postfix) with ESMTPSA id 3DB6D6602EB0; Mon, 30 Jan 2023 20:08:30 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1675109312; bh=04swUGoUqfLzO/4GYJ0FTGA8WmbYd7gvyrdjrpSIOFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GsSTtJHd2vBscdTddI8ZOpBQl8DfB5rTDqJC14DyiOnJnQa9rskw02+R9XAoYcBhQ 5yrOKECmzR7Q82W1zkPW1r87I0mdDqBSN7qf02llezIGDoDnEq7rzXXjfX0zpg9abL Jt/7wmrhBoB3HancDDfVamY2NMuF54uTZC/+gg7QoBtD1paCbMhKKYYirX+kkUVoFz Wt8TQXJLIXSTYVF0BpPdzv9UhDitROp2wJ3cmvw7EokCb4C9dgARtgzEnhIG84YQt8 9gdQU34TgpiFIx5hnOXRJUOnKLhazkqCVwVxQNLh+VUiGFL193+jT9z96R0Pxfd39w eDYjWJqVMy3dw== From: =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= To: Matthias Brugger Cc: kernel@collabora.com, AngeloGioacchino Del Regno , =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= , Arnd Bergmann , Bjorn Andersson , Catalin Marinas , Dmitry Baryshkov , Geert Uytterhoeven , Krzysztof Kozlowski , Marcel Ziswiler , Shawn Guo , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/2] arm64: defconfig: Enable DMA_RESTRICTED_POOL Date: Mon, 30 Jan 2023 15:08:20 -0500 Message-Id: <20230130200820.82084-2-nfraprado@collabora.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230130200820.82084-1-nfraprado@collabora.com> References: <20230130200820.82084-1-nfraprado@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable support for restricted DMA pools which provide a level of DMA memory protection on systems with limited hardware protection capabilities, such as those lacking an IOMMU. For instance, mt8192-asurada-spherion makes use of this to provide a restricted DMA region for WiFi since its MT7921E WiFi card is connected through PCIe, and the MT8192 SoC doesn't have an IOMMU context for the PCIe controller. Signed-off-by: Nícolas F. R. A. Prado --- Changes in v3: - Added this patch arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index be40004a0259..4e806d8068f6 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1422,6 +1422,7 @@ CONFIG_CRYPTO_DEV_HISI_SEC2=m CONFIG_CRYPTO_DEV_HISI_ZIP=m CONFIG_CRYPTO_DEV_HISI_HPRE=m CONFIG_CRYPTO_DEV_HISI_TRNG=m +CONFIG_DMA_RESTRICTED_POOL=y CONFIG_CMA_SIZE_MBYTES=32 CONFIG_PRINTK_TIME=y CONFIG_DEBUG_KERNEL=y -- 2.39.1