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=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 0223AC3A59E for ; Wed, 21 Aug 2019 15:25:38 +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 CC62722CF7 for ; Wed, 21 Aug 2019 15:25:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="JoGtZHbZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="gUDPg5D2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC62722CF7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oyKrY0jUVoReWFHSGEldMitYMXXFji4Iu82UBhaHTsU=; b=JoGtZHbZza8iND wf/IVfZj+jGYZRXAE41vYsnwptBPydaaF/SH23PMoyQsGFrJ0Y7Y+YbPZjcm7aE0Ax+5OWDRFIfAB PbC0JbwB8sllV3zPH61FPWm6DQd9O/UlYceqlKZ+E9xd+unbASgXUqq30WsDU+1apXh2SwhPo8Ppt fDOVXdWXZuDzLmee6RSd9M5cCqVEmpsAVBtG1m7L8mMghfPurs0TQtfyoYorgZL5BHx2nyiRz9ztA 6pWHq3zuhzTcqVTcfYeh5IWV2qZ/1PshT0p0SzsPfKBgx9/wFL2nE117UmsDShhFRzmqjuH/AwUcy 8ppgeVTTlIzeSEe3qnDQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i0SUT-0001wy-FQ; Wed, 21 Aug 2019 15:25:37 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i0SUQ-0001wY-Fl; Wed, 21 Aug 2019 15:25:35 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0307C206BA; Wed, 21 Aug 2019 15:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566401134; bh=Z133FCcaUexJ59kOIXUWJUTamhLJKJ6ldqxj9NWa3tk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gUDPg5D2HGetVoKEHsW8DXI3N8IRAZgH4Tai4x88ildrlJztU+xVCdx4+3RGx2O2c N5xYByPeiRxepUcdRhHOkougwAECZWjBWIx9W0p1/W0+2p3czw/xCZjOZAh7KO7B+o cfMKfQyFaTQVwpV34sGMhCCZ2nWA2Elrqu5sjzPE= Date: Wed, 21 Aug 2019 16:25:28 +0100 From: Will Deacon To: Yong Wu Subject: Re: [PATCH v10 07/23] iommu/io-pgtable-arm-v7s: Use ias/oas to check the valid iova/pa Message-ID: <20190821152527.6rkgf4g5wgsc7fyq@willie-the-truck> References: <1566395606-7975-1-git-send-email-yong.wu@mediatek.com> <1566395606-7975-8-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1566395606-7975-8-git-send-email-yong.wu@mediatek.com> User-Agent: NeoMutt/20170113 (1.7.2) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190821_082534_541038_74BA0B90 X-CRM114-Status: GOOD ( 14.30 ) 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: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , cui.zhang@mediatek.com, srv_heupstream@mediatek.com, chao.hao@mediatek.com, Joerg Roedel , linux-kernel@vger.kernel.org, Evan Green , Tomasz Figa , iommu@lists.linux-foundation.org, Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , ming-fan.chen@mediatek.com, anan.sun@mediatek.com, Robin Murphy , Matthias Kaehlcke , 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 Wed, Aug 21, 2019 at 09:53:10PM +0800, Yong Wu wrote: > Use ias/oas to check the valid iova/pa. Synchronize this checking with > io-pgtable-arm.c. > > Signed-off-by: Yong Wu > --- > drivers/iommu/io-pgtable-arm-v7s.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c > index 72f1880..fa1b38f 100644 > --- a/drivers/iommu/io-pgtable-arm-v7s.c > +++ b/drivers/iommu/io-pgtable-arm-v7s.c > @@ -504,7 +504,8 @@ static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova, > if (!(prot & (IOMMU_READ | IOMMU_WRITE))) > return 0; > > - if (WARN_ON(upper_32_bits(iova) || upper_32_bits(paddr))) > + if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias) || > + paddr >= (1ULL << data->iop.cfg.oas))) > return -ERANGE; Acked-by: Will Deacon Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel