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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 7303AC2BA19 for ; Tue, 21 Apr 2020 08:55:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 49FD422244 for ; Tue, 21 Apr 2020 08:55:31 +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="LLXaj31F" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727891AbgDUIza (ORCPT ); Tue, 21 Apr 2020 04:55:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726018AbgDUIza (ORCPT ); Tue, 21 Apr 2020 04:55:30 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3DBDFC061A0F; Tue, 21 Apr 2020 01:55:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=TpKuw/piS7tkOzNHb5163BQiSydgsqXnGL17Bi9pIXc=; b=LLXaj31F1SppFy6MghvYaRRE1+ QqN2HC2nMR5iG9DkLgeCfPVGYcB4g4jeeLucL7dv26bQ8SVNgS3U9esD3F2Ge10NEC1XL8P1AvKUV Kx5PxSvAsln7Q5hWK6bySudtYQ3j1gReRrxf2EAFELegUA1Kmq2/+xUd9WUjMxkpNOueRqf3LyXuI HHvGbluS5RXGfgaXsdlFNN1aPeqMVrTJrYubQJ+gCQSB6JA0J1l2NrpGO6h7eyBbxJ0hkYbzdKY3Q 6VKqB4BS0aoY1WQQgGz2pa/GMrSRSy40hCXicGCzTViwqYOBDw8NG3bdMKvluYftNIYbak9jqL9uu TriHhV6A==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jQogf-0005Gs-NA; Tue, 21 Apr 2020 08:55:25 +0000 Date: Tue, 21 Apr 2020 01:55:25 -0700 From: Christoph Hellwig To: Fenghua Yu Cc: Jacob Pan , Jason Gunthorpe , Jean-Philippe Brucker , Christoph Hellwig , iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, joro@8bytes.org, catalin.marinas@arm.com, will@kernel.org, robin.murphy@arm.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, Jonathan.Cameron@huawei.com, christian.koenig@amd.com, zhangfei.gao@linaro.org, xuzaibo@huawei.com, "Raj, Ashok" Subject: Re: [PATCH v5 02/25] iommu/sva: Manage process address spaces Message-ID: <20200421085525.GA6900@infradead.org> References: <20200414170252.714402-1-jean-philippe@linaro.org> <20200414170252.714402-3-jean-philippe@linaro.org> <20200416072852.GA32000@infradead.org> <20200416085402.GB1286150@myrica> <20200416121331.GA18661@infradead.org> <20200420074213.GA3180232@myrica> <20200420135727.GO26002@ziepe.ca> <20200420104850.60531cb6@jacob-builder> <20200420181437.GA229170@romley-ivt3.sc.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200420181437.GA229170@romley-ivt3.sc.intel.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, Apr 20, 2020 at 11:14:37AM -0700, Fenghua Yu wrote: > > Agreed, perhaps Fenghua can consider that in his patchset. It would > > help align life cycles as well. > > https://lkml.org/lkml/2020/3/30/910> > > Seems we depend on each other: my patch defines pasid in mm_struct. > I can free PASID in your detach() function. Looks like this should go into the same series. I also don't see any good reason to have the pasid in the x86-specific context vs the common mm_struct.