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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 9 Jul 2019 11:06:10 +0100 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 x69A5uIN39190860 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 9 Jul 2019 10:05:56 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E3D89A4054; Tue, 9 Jul 2019 10:06:08 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2346BA405F; Tue, 9 Jul 2019 10:06:07 +0000 (GMT) Received: from in.ibm.com (unknown [9.85.81.51]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 9 Jul 2019 10:06:06 +0000 (GMT) Date: Tue, 9 Jul 2019 15:36:04 +0530 From: Bharata B Rao To: Paul Mackerras Cc: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org, linux-mm@kvack.org, paulus@au1.ibm.com, aneesh.kumar@linux.vnet.ibm.com, jglisse@redhat.com, linuxram@us.ibm.com, sukadev@linux.vnet.ibm.com, cclaudio@linux.ibm.com Subject: Re: [RFC PATCH v4 6/6] kvmppc: Support reset of secure guest Reply-To: bharata@linux.ibm.com References: <20190528064933.23119-1-bharata@linux.ibm.com> <20190528064933.23119-7-bharata@linux.ibm.com> <20190617040632.jiq73ogxqyccvfjl@oak.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190617040632.jiq73ogxqyccvfjl@oak.ozlabs.ibm.com> User-Agent: Mutt/1.12.0 (2019-05-25) X-TM-AS-GCONF: 00 x-cbid: 19070910-0028-0000-0000-000003824118 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19070910-0029-0000-0000-000024424CDC Message-Id: <20190709100604.GD27933@in.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-07-09_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907090122 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Jun 17, 2019 at 02:06:32PM +1000, Paul Mackerras wrote: > On Tue, May 28, 2019 at 12:19:33PM +0530, Bharata B Rao wrote: > > Add support for reset of secure guest via a new ioctl KVM_PPC_SVM_OFF. > > This ioctl will be issued by QEMU during reset and in this ioctl, > > we ask UV to terminate the guest via UV_SVM_TERMINATE ucall, > > reinitialize guest's partitioned scoped page tables and release all > > HMM pages of the secure guest. > > > > After these steps, guest is ready to issue UV_ESM call once again > > to switch to secure mode. > > Since you are adding a new KVM ioctl, you need to add a description of > it to Documentation/virtual/kvm/api.txt. Adding in the next version. Regards, Bharata.