From patchwork Mon Nov 4 21:28:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ram Pai X-Patchwork-Id: 1189188 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 476R085F2vz9s7T for ; Tue, 5 Nov 2019 08:34:48 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=us.ibm.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 476R084JsYzF4Kr for ; Tue, 5 Nov 2019 08:34:48 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=us.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=linuxram@us.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=us.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 476QtS6Nf9zF4HS for ; Tue, 5 Nov 2019 08:29:52 +1100 (AEDT) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id xA4LTD17004878 for ; Mon, 4 Nov 2019 16:29:51 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2w2rhn8fvs-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 04 Nov 2019 16:29:50 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 4 Nov 2019 21:29:43 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xA4LT7fY41943420 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 4 Nov 2019 21:29:08 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B1E36A405F; Mon, 4 Nov 2019 21:29:42 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CB1FFA4054; Mon, 4 Nov 2019 21:29:38 +0000 (GMT) Received: from oc0525413822.ibm.com (unknown [9.85.192.56]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 4 Nov 2019 21:29:38 +0000 (GMT) From: Ram Pai To: linuxppc-dev@lists.ozlabs.org Subject: [RFC v1 2/2] powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell. Date: Mon, 4 Nov 2019 13:28:43 -0800 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1572902923-8096-2-git-send-email-linuxram@us.ibm.com> References: <1572902923-8096-1-git-send-email-linuxram@us.ibm.com> <1572902923-8096-2-git-send-email-linuxram@us.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19110421-4275-0000-0000-0000037AC033 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19110421-4276-0000-0000-0000388E0841 Message-Id: <1572902923-8096-3-git-send-email-linuxram@us.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-11-04_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=646 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1911040205 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: andmike@us.ibm.com, mst@redhat.com, aik@ozlabs.ru, linuxram@us.ibm.com, mdroth@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, ram.n.pai@gmail.com, cai@lca.pw, tglx@linutronix.de, sukadev@linux.vnet.ibm.com, hch@lst.de, bauerman@linux.ibm.com, david@gibson.dropbear.id.au Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This enables IOMMU support for pseries Secure VMs. Signed-off-by: Ram Pai --- arch/powerpc/platforms/pseries/iommu.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index 07f0847..189717b 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -1333,15 +1333,7 @@ void iommu_init_early_pSeries(void) of_reconfig_notifier_register(&iommu_reconfig_nb); register_memory_notifier(&iommu_mem_nb); - /* - * Secure guest memory is inacessible to devices so regular DMA isn't - * possible. - * - * In that case keep devices' dma_map_ops as NULL so that the generic - * DMA code path will use SWIOTLB to bounce buffers for DMA. - */ - if (!is_secure_guest()) - set_pci_dma_ops(&dma_iommu_ops); + set_pci_dma_ops(&dma_iommu_ops); } static int __init disable_multitce(char *str)