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=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 3014EC38149 for ; Thu, 6 Aug 2020 11:04:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1FBD422CF6 for ; Thu, 6 Aug 2020 11:04:39 +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="G++1zEYu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728441AbgHFG6L (ORCPT ); Thu, 6 Aug 2020 02:58:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36820 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728294AbgHFG6I (ORCPT ); Thu, 6 Aug 2020 02:58:08 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BF75C061574 for ; Wed, 5 Aug 2020 23:58:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=uoVENN0m/ajn2+m/T1lGKfdUU/BbhArpJv86UOgrRFY=; b=G++1zEYuNW9wXk5l0CTikmwm7j XAhofXvtYgeP2y9ZRieOg0FzoOmetBTMRG5Oebq2G+6Mcx8W527IjexwCAWbi7rJkmAAaaCvTUB60 JgABgCTJiJ/MFx0GT7e5LWEHFGtDOAHpgpDklN1DpxZ1Nh23895Kup+CbMGo5+8rkDzayMtuzdRK8 yoK0gL1HWZYL3818vyyzxov9q01JFaS2aG7aaQDXY1UOTkx+z2U7jAgwGQU5PxhhC598dTrt4Bk3s ZYWIBoKwA0AqMzpVM2yTw9BLpemDZWgap8e6tzZn+Z5TsUAU0M2595ECneDjUatfOyVaz3nOkCE1c YQefsxRw==; Received: from hch by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1k3Zqj-0002iU-Ug; Thu, 06 Aug 2020 06:58:01 +0000 Date: Thu, 6 Aug 2020 07:58:01 +0100 From: Christoph Hellwig To: Ajay Kumar Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, mark.rutland@arm.com, will@kernel.org, joro@8bytes.org, robin.murphy@arm.com, nleeder@codeaurora.org Subject: Re: [RFC PATCH] dma-iommu: allow devices to set IOVA range dynamically Message-ID: <20200806065801.GA9618@infradead.org> References: <20200803133620.13840-1-ajaykumar.rs@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200803133620.13840-1-ajaykumar.rs@samsung.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.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 I'm not entirely sure this is the right mechanism. Can you please send it along with your intended user so that we can get a better picture? Also the export needs to be a _GPL one for any kind of functionality like this,