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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 Cc: benh@kernel.crashing.org, david@gibson.dropbear.id.au, mpe@ellerman.id.au, paulus@ozlabs.org, mdroth@linux.vnet.ibm.com, hch@lst.de, linuxram@us.ibm.com, andmike@us.ibm.com, sukadev@linux.vnet.ibm.com, mst@redhat.com, ram.n.pai@gmail.com, aik@ozlabs.ru, cai@lca.pw, tglx@linutronix.de, bauerman@linux.ibm.com, linux-kernel@vger.kernel.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=644 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1911040205 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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) -- 1.8.3.1