From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53637C5DF61 for ; Thu, 7 Nov 2019 17:41:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 284AC218AE for ; Thu, 7 Nov 2019 17:41:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="cIm6jVZ0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389538AbfKGRk7 (ORCPT ); Thu, 7 Nov 2019 12:40:59 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:50350 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727132AbfKGRk6 (ORCPT ); Thu, 7 Nov 2019 12:40:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=dLNx8yX02Kzj1oRWP3mQD5vnGq79lBQ8cwVKhpycAZU=; b=cIm6jVZ03X0FF3ZUZEVUBNxG2 TzFrLwgk9odu/08Us6Nlkwas9WZ15XFdpPT2mAfyh3/Q3/Jfr87m38La8EyX3BRe/M5B+OsKGdj78 bLUUAIvM0bNRoeNsydjx3SfAzM8kAGyt4E78aHVnQkSQwU3ifXbxIotnL525AOyqb3r2IXzsDv0K5 DgvUNXavRIyemwxa8KPa9J6lWpHc9hTtoDxV+ZQrBpoU5JEDCWfOy4WXKCChV1Xw2SXz+QHiTWoLC i6PvhObHRRkUQS7SizmzKHusOkrT5aoQyK6Winw83d4cMSqk05qzHLFHvvtU3ShbRr5DoB3Q9XZhg sk/4vf4xw==; Received: from [2001:4bb8:184:e48:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iSllt-0002NX-Tu; Thu, 07 Nov 2019 17:40:38 +0000 From: Christoph Hellwig To: Jonas Bonn , Stefan Kristiansson , Stafford Horne Cc: Marek Szyprowski , Robin Murphy , Will Deacon , Mark Rutland , openrisc@lists.librecores.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: provide in-place uncached remapping for dma-direct Date: Thu, 7 Nov 2019 18:40:33 +0100 Message-Id: <20191107174035.13783-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, this series provides support for remapping places uncached in-place in the generic dma-direct code, and moves openrisc over from its own in-place remapping scheme. The arm64 folks also had interest in such a scheme to avoid problems with speculating into cache aliases. Also all architectures that always use small page mappings for the kernel and have non-coherent DMA should look into enabling this scheme, as it is much more efficient than the vmap remapping. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: provide in-place uncached remapping for dma-direct Date: Thu, 7 Nov 2019 18:40:33 +0100 Message-ID: <20191107174035.13783-1-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Jonas Bonn , Stefan Kristiansson , Stafford Horne Cc: Mark Rutland , linux-arch@vger.kernel.org, Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, openrisc@lists.librecores.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Marek Szyprowski List-Id: linux-arch.vger.kernel.org Hi all, this series provides support for remapping places uncached in-place in the generic dma-direct code, and moves openrisc over from its own in-place remapping scheme. The arm64 folks also had interest in such a scheme to avoid problems with speculating into cache aliases. Also all architectures that always use small page mappings for the kernel and have non-coherent DMA should look into enabling this scheme, as it is much more efficient than the vmap remapping. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6158C43331 for ; Thu, 7 Nov 2019 17:42:06 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7779F20673 for ; Thu, 7 Nov 2019 17:42:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="cIm6jVZ0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7779F20673 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 6F839E43; Thu, 7 Nov 2019 17:40:59 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 0ABB5E28 for ; Thu, 7 Nov 2019 17:40:58 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id C3029756 for ; Thu, 7 Nov 2019 17:40:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=dLNx8yX02Kzj1oRWP3mQD5vnGq79lBQ8cwVKhpycAZU=; b=cIm6jVZ03X0FF3ZUZEVUBNxG2 TzFrLwgk9odu/08Us6Nlkwas9WZ15XFdpPT2mAfyh3/Q3/Jfr87m38La8EyX3BRe/M5B+OsKGdj78 bLUUAIvM0bNRoeNsydjx3SfAzM8kAGyt4E78aHVnQkSQwU3ifXbxIotnL525AOyqb3r2IXzsDv0K5 DgvUNXavRIyemwxa8KPa9J6lWpHc9hTtoDxV+ZQrBpoU5JEDCWfOy4WXKCChV1Xw2SXz+QHiTWoLC i6PvhObHRRkUQS7SizmzKHusOkrT5aoQyK6Winw83d4cMSqk05qzHLFHvvtU3ShbRr5DoB3Q9XZhg sk/4vf4xw==; Received: from [2001:4bb8:184:e48:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iSllt-0002NX-Tu; Thu, 07 Nov 2019 17:40:38 +0000 From: Christoph Hellwig To: Jonas Bonn , Stefan Kristiansson , Stafford Horne Subject: provide in-place uncached remapping for dma-direct Date: Thu, 7 Nov 2019 18:40:33 +0100 Message-Id: <20191107174035.13783-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Cc: Mark Rutland , linux-arch@vger.kernel.org, Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, openrisc@lists.librecores.org, Will Deacon , linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org Hi all, this series provides support for remapping places uncached in-place in the generic dma-direct code, and moves openrisc over from its own in-place remapping scheme. The arm64 folks also had interest in such a scheme to avoid problems with speculating into cache aliases. Also all architectures that always use small page mappings for the kernel and have non-coherent DMA should look into enabling this scheme, as it is much more efficient than the vmap remapping. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA15FC5DF60 for ; Thu, 7 Nov 2019 17:40:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7ACFF2077C for ; Thu, 7 Nov 2019 17:40:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="g3MIjnW/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ACFF2077C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=MFKp/M5VwiM//MFHitj+sUTomzBkvafhg/z4cTkxUx4=; b=g3MIjnW/6G6K8E M0xS9Cn0aLyT/2ZYYzFBaUbDaAV5G5Q7zEutN18BEoemggTt36WDCCzUutUI4Sy1qIRmLdf3BlcU3 MGm937POySjUgP81pLwLS1jueOu5zUWk4G0Pr01bKu9rmhTBfXwsLYn+z+5XbF1TQy8SOJaaUdOiU 2ElvqZsHgoE0OGEB9kjpc20CH9a3ya0qDp1EU5bKJaTHttAJHeK5f/VXZEcaq4LBJuaanZESeeeIL NKNrXWEOe6ADjtOnU9HnkNbTmFYCJspVLW40dnfsG+6gk+K4Gx6kMik8SfDlphN0KThp4GGb4AFst 7AmDp5kWvu0WdhI0hSrA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iSlm0-0002Of-7M; Thu, 07 Nov 2019 17:40:44 +0000 Received: from [2001:4bb8:184:e48:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1iSllt-0002NX-Tu; Thu, 07 Nov 2019 17:40:38 +0000 From: Christoph Hellwig To: Jonas Bonn , Stefan Kristiansson , Stafford Horne Subject: provide in-place uncached remapping for dma-direct Date: Thu, 7 Nov 2019 18:40:33 +0100 Message-Id: <20191107174035.13783-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-arch@vger.kernel.org, Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, openrisc@lists.librecores.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Marek Szyprowski Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi all, this series provides support for remapping places uncached in-place in the generic dma-direct code, and moves openrisc over from its own in-place remapping scheme. The arm64 folks also had interest in such a scheme to avoid problems with speculating into cache aliases. Also all architectures that always use small page mappings for the kernel and have non-coherent DMA should look into enabling this scheme, as it is much more efficient than the vmap remapping. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Thu, 7 Nov 2019 18:40:33 +0100 Subject: [OpenRISC] provide in-place uncached remapping for dma-direct Message-ID: <20191107174035.13783-1-hch@lst.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org Hi all, this series provides support for remapping places uncached in-place in the generic dma-direct code, and moves openrisc over from its own in-place remapping scheme. The arm64 folks also had interest in such a scheme to avoid problems with speculating into cache aliases. Also all architectures that always use small page mappings for the kernel and have non-coherent DMA should look into enabling this scheme, as it is much more efficient than the vmap remapping.