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=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 3A57AC43219 for ; Fri, 3 May 2019 11:33:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 151362075C for ; Fri, 3 May 2019 11:33:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727539AbfECLd6 (ORCPT ); Fri, 3 May 2019 07:33:58 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:58866 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726372AbfECLd5 (ORCPT ); Fri, 3 May 2019 07:33:57 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5B750374; Fri, 3 May 2019 04:33:57 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C3E1B3F220; Fri, 3 May 2019 04:33:55 -0700 (PDT) Date: Fri, 3 May 2019 12:33:53 +0100 From: Catalin Marinas To: Christoph Hellwig Cc: Robin Murphy , Joerg Roedel , Will Deacon , Tom Lendacky , iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/25] arm64/iommu: handle non-remapped addresses in ->mmap and ->get_sgtable Message-ID: <20190503113352.GA55449@arrakis.emea.arm.com> References: <20190430105214.24628-1-hch@lst.de> <20190430105214.24628-2-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190430105214.24628-2-hch@lst.de> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 30, 2019 at 06:51:50AM -0400, Christoph Hellwig wrote: > DMA allocations that can't sleep may return non-remapped addresses, but > we do not properly handle them in the mmap and get_sgtable methods. > Resolve non-vmalloc addresses using virt_to_page to handle this corner > case. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Robin Murphy Acked-by: Catalin Marinas 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=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 6C67CC43219 for ; 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Fri, 3 May 2019 11:33:57 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5B750374; Fri, 3 May 2019 04:33:57 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C3E1B3F220; Fri, 3 May 2019 04:33:55 -0700 (PDT) Date: Fri, 3 May 2019 12:33:53 +0100 From: Catalin Marinas To: Christoph Hellwig Subject: Re: [PATCH 01/25] arm64/iommu: handle non-remapped addresses in ->mmap and ->get_sgtable Message-ID: <20190503113352.GA55449@arrakis.emea.arm.com> References: <20190430105214.24628-1-hch@lst.de> <20190430105214.24628-2-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190430105214.24628-2-hch@lst.de> User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Tom Lendacky , Will Deacon , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Robin Murphy , 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 On Tue, Apr 30, 2019 at 06:51:50AM -0400, Christoph Hellwig wrote: > DMA allocations that can't sleep may return non-remapped addresses, but > we do not properly handle them in the mmap and get_sgtable methods. > Resolve non-vmalloc addresses using virt_to_page to handle this corner > case. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Robin Murphy Acked-by: Catalin Marinas _______________________________________________ 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=-5.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 5CE05C43219 for ; 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Fri, 3 May 2019 04:33:55 -0700 (PDT) Date: Fri, 3 May 2019 12:33:53 +0100 From: Catalin Marinas To: Christoph Hellwig Subject: Re: [PATCH 01/25] arm64/iommu: handle non-remapped addresses in ->mmap and ->get_sgtable Message-ID: <20190503113352.GA55449@arrakis.emea.arm.com> References: <20190430105214.24628-1-hch@lst.de> <20190430105214.24628-2-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190430105214.24628-2-hch@lst.de> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190503_043358_439436_769310F0 X-CRM114-Status: GOOD ( 12.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tom Lendacky , Joerg Roedel , Will Deacon , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Robin Murphy , linux-arm-kernel@lists.infradead.org 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 On Tue, Apr 30, 2019 at 06:51:50AM -0400, Christoph Hellwig wrote: > DMA allocations that can't sleep may return non-remapped addresses, but > we do not properly handle them in the mmap and get_sgtable methods. > Resolve non-vmalloc addresses using virt_to_page to handle this corner > case. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Robin Murphy Acked-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel