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=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 37743C433DF for ; Mon, 3 Aug 2020 06:44:48 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 E4FAA20738 for ; Mon, 3 Aug 2020 06:44:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4FAA20738 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 localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 56B4A8777C; Mon, 3 Aug 2020 06:44:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fJyxSgROr+5s; Mon, 3 Aug 2020 06:44:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id D014E878A5; Mon, 3 Aug 2020 06:44:47 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id A0498C0050; Mon, 3 Aug 2020 06:44:47 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id DA31EC004C for ; Mon, 3 Aug 2020 06:44:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id C29B6877B1 for ; Mon, 3 Aug 2020 06:44:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2etKG-An6sr8 for ; Mon, 3 Aug 2020 06:44:43 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by hemlock.osuosl.org (Postfix) with ESMTPS id 7F9488777C for ; Mon, 3 Aug 2020 06:44:43 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id A655E68CFC; Mon, 3 Aug 2020 08:44:38 +0200 (CEST) Date: Mon, 3 Aug 2020 08:44:38 +0200 From: Christoph Hellwig To: David Rientjes Subject: Re: revert scope for 5.8, was Re: dma-pool fixes Message-ID: <20200803064438.GA19014@lst.de> References: <20200731130903.GA31110@lst.de> <20200801085706.GA2991@lst.de> <20200801173952.GA15542@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Amit Pundir , Linus Torvalds , iommu , jeremy.linton@arm.com, Caleb Connolly , linux-rpi-kernel@lists.infradead.org, Robin Murphy , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 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 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Sun, Aug 02, 2020 at 09:14:41PM -0700, David Rientjes wrote: > Christoph: since we have atomic DMA coherent pools in 5.8 now, recall our > previous discussions, including Greg KH, regarding backports to stable > trees (we are interested in 5.4 and 5.6) of this support for the purposes > of confidential VM users who wish to run their own SEV-enabled guests in > cloud. > > Would you have any objections to backports being offered for this support > now? We can prepare them immediately. Or, if you would prefer we hold > off for a while, please let me know and we can delay it until you are more > comfortable. (For confidential VM users, the ability to run your own > unmodified stable kernel is a much different security story than a guest > modified by the cloud provider.) Before we start backporting I think we need the two fixes from the "dma pool fixes" series. Can you start reviewing them? I also think we should probably wait at least until -rc2 for any fallout before starting the backport. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu