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=-2.3 required=3.0 tests=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 4BDBBC742BD for ; Fri, 12 Jul 2019 15:13:51 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 0B5E82084B for ; Fri, 12 Jul 2019 15:13:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B5E82084B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45lbzc3scVzDqYq for ; Sat, 13 Jul 2019 01:13:48 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45lbx30SjMzDqKZ for ; Sat, 13 Jul 2019 01:11:33 +1000 (AEST) Received: by verein.lst.de (Postfix, from userid 2407) id 7887F227A81; Fri, 12 Jul 2019 17:11:29 +0200 (CEST) Date: Fri, 12 Jul 2019 17:11:29 +0200 From: Christoph Hellwig To: Halil Pasic Subject: Re: [PATCH 3/3] fs/core/vmcore: Move sev_active() reference to x86 arch code Message-ID: <20190712151129.GA30636@lst.de> References: <20190712053631.9814-1-bauerman@linux.ibm.com> <20190712053631.9814-4-bauerman@linux.ibm.com> <20190712150912.3097215e.pasic@linux.ibm.com> <20190712140812.GA29628@lst.de> <20190712165153.78d49095.pasic@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190712165153.78d49095.pasic@linux.ibm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, Mike Anderson , Konrad Rzeszutek Wilk , Robin Murphy , x86@kernel.org, Ram Pai , linux-kernel@vger.kernel.org, Alexey Dobriyan , iommu@lists.linux-foundation.org, Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , linux-fsdevel@vger.kernel.org, Thomas Gleixner , linuxppc-dev@lists.ozlabs.org, Christoph Hellwig , Thiago Jung Bauermann , Marek Szyprowski Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, Jul 12, 2019 at 04:51:53PM +0200, Halil Pasic wrote: > Thank you very much! I will have another look, but it seems to me, > without further measures taken, this would break protected virtualization > support on s390. The effect of the che for s390 is that > force_dma_unencrypted() will always return false instead calling into > the platform code like it did before the patch, right? > > Should I send a Fixes: e67a5ed1f86f "dma-direct: Force unencrypted DMA > under SME for certain DMA masks" (Tom Lendacky, 2019-07-10) patch that > rectifies things for s390 or how do we want handle this? Yes, please do. I hadn't noticed the s390 support had landed in mainline already.