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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 9 Dec 2019 07:00:28 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB970Rmr50594008 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 9 Dec 2019 07:00:27 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE32052050; Mon, 9 Dec 2019 07:00:26 +0000 (GMT) Received: from bharata.in.ibm.com (unknown [9.109.247.23]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id CABBE52071; Mon, 9 Dec 2019 07:00:24 +0000 (GMT) From: Bharata B Rao To: qemu-devel@nongnu.org Subject: [PATCH v1 ppc-for-5.0 2/2] ppc/spapr: Support reboot of secure pseries guest Date: Mon, 9 Dec 2019 12:30:12 +0530 X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191209070012.14766-1-bharata@linux.ibm.com> References: <20191209070012.14766-1-bharata@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 x-cbid: 19120907-0008-0000-0000-0000033EFFE3 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120907-0009-0000-0000-00004A5E2B54 Message-Id: <20191209070012.14766-3-bharata@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-09_01:2019-12-09,2019-12-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=1 impostorscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912090059 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxram@us.ibm.com, Bharata B Rao , qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" A pseries guest can be run as a secure guest on Ultravisor-enabled POWER platforms. When such a secure guest is reset, we need to release/reset a few resources both on ultravisor and hypervisor side. This is achieved by invoking this new ioctl KVM_PPC_SVM_OFF from the machine reset path. As part of this ioctl, the secure guest is essentially transitioned back to normal mode so that it can reboot like a regular guest and become secure again. This ioctl has no effect when invoked for a normal guest. Signed-off-by: Bharata B Rao --- hw/ppc/spapr.c | 1 + target/ppc/kvm.c | 7 +++++++ target/ppc/kvm_ppc.h | 6 ++++++ 3 files changed, 14 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index f11422fc41..4c7ad3400d 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1597,6 +1597,7 @@ static void spapr_machine_reset(MachineState *machine) void *fdt; int rc; =20 + kvmppc_svm_off(); spapr_caps_apply(spapr); =20 first_ppc_cpu =3D POWERPC_CPU(first_cpu); diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 7406d18945..1a86fa4f0c 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -2900,3 +2900,10 @@ void kvmppc_set_reg_tb_offset(PowerPCCPU *cpu, int64= _t tb_offset) kvm_set_one_reg(cs, KVM_REG_PPC_TB_OFFSET, &tb_offset); } } + +int kvmppc_svm_off(void) +{ + KVMState *s =3D KVM_STATE(current_machine->accelerator); + + return kvm_vm_ioctl(s, KVM_PPC_SVM_OFF); +} diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h index 47b08a4030..5cc812e486 100644 --- a/target/ppc/kvm_ppc.h +++ b/target/ppc/kvm_ppc.h @@ -37,6 +37,7 @@ int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu); target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu, bool radix, bool gtse, uint64_t proc_tbl); +int kvmppc_svm_off(void); #ifndef CONFIG_USER_ONLY bool kvmppc_spapr_use_multitce(void); int kvmppc_spapr_enable_inkernel_multitce(void); @@ -201,6 +202,11 @@ static inline target_ulong kvmppc_configure_v3_mmu(Pow= erPCCPU *cpu, return 0; } =20 +static inline int kvmppc_svm_off(void) +{ + return 0; +} + static inline void kvmppc_set_reg_ppc_online(PowerPCCPU *cpu, unsigned int online) { --=20 2.21.0