To allow other types of launch security the SEV type specific parameters like e.g. policy need to be optional and be separated from other new launch security types. A test is added to ensure the previously required and now optional launch security policy remains required when launch security type is SEV. Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> --- docs/schemas/domaincommon.rng | 12 +- src/conf/domain_conf.c | 156 +++++++++++------- src/conf/domain_conf.h | 13 +- src/conf/virconftypes.h | 2 + src/qemu/qemu_cgroup.c | 4 +- src/qemu/qemu_command.c | 43 ++++- src/qemu/qemu_driver.c | 2 +- src/qemu/qemu_firmware.c | 8 +- src/qemu/qemu_namespace.c | 20 ++- src/qemu/qemu_process.c | 35 +++- src/qemu/qemu_validate.c | 22 ++- src/security/security_dac.c | 4 +- ...urity-sev-missing-policy.x86_64-2.12.0.err | 1 + .../launch-security-sev-missing-policy.xml | 34 ++++ tests/qemuxml2argvtest.c | 1 + 15 files changed, 257 insertions(+), 100 deletions(-) create mode 100644 tests/qemuxml2argvdata/launch-security-sev-missing-policy.x86_64-2.12.0.err create mode 100644 tests/qemuxml2argvdata/launch-security-sev-missing-policy.xml diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 5ea14b6dbf..8c1b6c3a09 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -483,7 +483,9 @@ <define name="launchSecurity"> <element name="launchSecurity"> <attribute name="type"> - <value>sev</value> + <choice> + <value>sev</value> + </choice> </attribute> <interleave> <optional> @@ -496,9 +498,11 @@ <data type="unsignedInt"/> </element> </optional> - <element name="policy"> - <ref name="hexuint"/> - </element> + <optional> + <element name="policy"> + <ref name="hexuint"/> + </element> + </optional> <optional> <element name="handle"> <ref name="unsignedInt"/> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index f65509d8ec..8c2f4fd227 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -3490,8 +3490,7 @@ virDomainResctrlDefFree(virDomainResctrlDef *resctrl) } -static void -virDomainSEVDefFree(virDomainSEVDef *def) +void virDomainSEVDefFree(virDomainSEVDef *def) { if (!def) return; @@ -3502,6 +3501,17 @@ virDomainSEVDefFree(virDomainSEVDef *def) g_free(def); } +void virDomainSecDefFree(virDomainSecDef *def) +{ + if (!def) + return; + + virDomainSEVDefFree(def->sev); + + g_free(def); +} + + static void virDomainOSDefClear(virDomainOSDef *os) { @@ -3703,7 +3713,7 @@ void virDomainDefFree(virDomainDef *def) if (def->namespaceData && def->ns.free) (def->ns.free)(def->namespaceData); - virDomainSEVDefFree(def->sev); + virDomainSecDefFree(def->sec); xmlFreeNode(def->metadata); @@ -14719,72 +14729,80 @@ virDomainSEVDefParseXML(xmlNodePtr sevNode, xmlXPathContextPtr ctxt) { VIR_XPATH_NODE_AUTORESTORE(ctxt) - virDomainSEVDef *def; + g_autoptr(virDomainSEVDef) sev = g_new0(virDomainSEVDef, 1); unsigned long policy; - g_autofree char *type = NULL; int rc = -1; - def = g_new0(virDomainSEVDef, 1); - ctxt->node = sevNode; - if (!(type = virXMLPropString(sevNode, "type"))) { - virReportError(VIR_ERR_XML_ERROR, "%s", - _("missing launch security type")); - goto error; - } - - def->sectype = virDomainLaunchSecurityTypeFromString(type); - switch ((virDomainLaunchSecurity) def->sectype) { - case VIR_DOMAIN_LAUNCH_SECURITY_SEV: - break; - case VIR_DOMAIN_LAUNCH_SECURITY_NONE: - case VIR_DOMAIN_LAUNCH_SECURITY_LAST: - default: - virReportError(VIR_ERR_XML_ERROR, - _("unsupported launch security type '%s'"), - type); - goto error; - } - if (virXPathULongHex("string(./policy)", ctxt, &policy) < 0) { virReportError(VIR_ERR_XML_ERROR, "%s", - _("failed to get launch security policy")); - goto error; + _("Failed to get launch security policy for " + "launch security type SEV")); + return NULL; } /* the following attributes are platform dependent and if missing, we can * autofill them from domain capabilities later */ - rc = virXPathUInt("string(./cbitpos)", ctxt, &def->cbitpos); + rc = virXPathUInt("string(./cbitpos)", ctxt, &sev->cbitpos); if (rc == 0) { - def->haveCbitpos = true; + sev->haveCbitpos = true; } else if (rc == -2) { virReportError(VIR_ERR_XML_ERROR, "%s", _("Invalid format for launch security cbitpos")); - goto error; + return NULL; } rc = virXPathUInt("string(./reducedPhysBits)", ctxt, - &def->reduced_phys_bits); + &sev->reduced_phys_bits); if (rc == 0) { - def->haveReducedPhysBits = true; + sev->haveReducedPhysBits = true; } else if (rc == -2) { virReportError(VIR_ERR_XML_ERROR, "%s", _("Invalid format for launch security " "reduced-phys-bits")); - goto error; + return NULL; } - def->policy = policy; - def->dh_cert = virXPathString("string(./dhCert)", ctxt); - def->session = virXPathString("string(./session)", ctxt); + sev->policy = policy; + sev->dh_cert = virXPathString("string(./dhCert)", ctxt); + sev->session = virXPathString("string(./session)", ctxt); - return def; + return g_steal_pointer(&sev); +} - error: - virDomainSEVDefFree(def); - return NULL; + +static virDomainSecDef * +virDomainSecDefParseXML(xmlNodePtr lsecNode, + xmlXPathContextPtr ctxt) +{ + g_autoptr(virDomainSecDef) sec = g_new0(virDomainSecDef, 1); + g_autofree char *type = NULL; + + if (!(type = virXMLPropString(lsecNode, "type"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("missing launch security type")); + return NULL; + } + + sec->sectype = virDomainLaunchSecurityTypeFromString(type); + switch ((virDomainLaunchSecurity) sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + sec->sev = virDomainSEVDefParseXML(lsecNode, ctxt); + if (!sec->sev) + return NULL; + break; + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + default: + virReportError(VIR_ERR_XML_ERROR, + _("unsupported launch security type '%s'"), + type); + return NULL; + } + + return g_steal_pointer(&sec); } @@ -20104,10 +20122,10 @@ virDomainDefParseXML(xmlDocPtr xml, ctxt->node = node; VIR_FREE(nodes); - /* Check for SEV feature */ + /* Check for launch security e.g. SEV feature */ if ((node = virXPathNode("./launchSecurity", ctxt)) != NULL) { - def->sev = virDomainSEVDefParseXML(node, ctxt); - if (!def->sev) + def->sec = virDomainSecDefParseXML(node, ctxt); + if (!def->sec) goto error; } @@ -26838,30 +26856,44 @@ virDomainKeyWrapDefFormat(virBuffer *buf, virDomainKeyWrapDef *keywrap) static void -virDomainSEVDefFormat(virBuffer *buf, virDomainSEVDef *sev) +virDomainSecDefFormat(virBuffer *buf, virDomainSecDef *sec) { - if (!sev) + if (!sec) return; - virBufferAsprintf(buf, "<launchSecurity type='%s'>\n", - virDomainLaunchSecurityTypeToString(sev->sectype)); - virBufferAdjustIndent(buf, 2); + switch ((virDomainLaunchSecurity) sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: { + virDomainSEVDef *sev = sec->sev; + if (!sev) + return; - if (sev->haveCbitpos) - virBufferAsprintf(buf, "<cbitpos>%d</cbitpos>\n", sev->cbitpos); + virBufferAsprintf(buf, "<launchSecurity type='%s'>\n", + virDomainLaunchSecurityTypeToString(sec->sectype)); + virBufferAdjustIndent(buf, 2); - if (sev->haveReducedPhysBits) - virBufferAsprintf(buf, "<reducedPhysBits>%d</reducedPhysBits>\n", - sev->reduced_phys_bits); - virBufferAsprintf(buf, "<policy>0x%04x</policy>\n", sev->policy); - if (sev->dh_cert) - virBufferEscapeString(buf, "<dhCert>%s</dhCert>\n", sev->dh_cert); + if (sev->haveCbitpos) + virBufferAsprintf(buf, "<cbitpos>%d</cbitpos>\n", sev->cbitpos); - if (sev->session) - virBufferEscapeString(buf, "<session>%s</session>\n", sev->session); + if (sev->haveReducedPhysBits) + virBufferAsprintf(buf, "<reducedPhysBits>%d</reducedPhysBits>\n", + sev->reduced_phys_bits); + virBufferAsprintf(buf, "<policy>0x%04x</policy>\n", sev->policy); + if (sev->dh_cert) + virBufferEscapeString(buf, "<dhCert>%s</dhCert>\n", sev->dh_cert); + + if (sev->session) + virBufferEscapeString(buf, "<session>%s</session>\n", sev->session); + + virBufferAdjustIndent(buf, -2); + virBufferAddLit(buf, "</launchSecurity>\n"); + break; + } + + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + break; + } - virBufferAdjustIndent(buf, -2); - virBufferAddLit(buf, "</launchSecurity>\n"); } @@ -28270,7 +28302,7 @@ virDomainDefFormatInternalSetRootName(virDomainDef *def, if (def->keywrap) virDomainKeyWrapDefFormat(buf, def->keywrap); - virDomainSEVDefFormat(buf, def->sev); + virDomainSecDefFormat(buf, def->sec); if (def->namespaceData && def->ns.format) { if ((def->ns.format)(buf, def->namespaceData) < 0) diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index f706c498ff..fa7ab1895d 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -2651,7 +2651,6 @@ typedef enum { struct _virDomainSEVDef { - int sectype; /* enum virDomainLaunchSecurity */ char *dh_cert; char *session; unsigned int policy; @@ -2661,6 +2660,10 @@ struct _virDomainSEVDef { unsigned int reduced_phys_bits; }; +struct _virDomainSecDef { + int sectype; /* enum virDomainLaunchSecurity */ + virDomainSEVDef *sev; +}; typedef enum { VIR_DOMAIN_IOMMU_MODEL_INTEL, @@ -2871,8 +2874,8 @@ struct _virDomainDef { virDomainKeyWrapDef *keywrap; - /* SEV-specific domain */ - virDomainSEVDef *sev; + /* launch security e.g. SEV */ + virDomainSecDef *sec; /* Application-specific custom metadata */ xmlNodePtr metadata; @@ -3285,6 +3288,10 @@ void virDomainRedirdevDefFree(virDomainRedirdevDef *def); void virDomainRedirFilterDefFree(virDomainRedirFilterDef *def); void virDomainShmemDefFree(virDomainShmemDef *def); G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainShmemDef, virDomainShmemDefFree); +void virDomainSEVDefFree(virDomainSEVDef *def); +G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainSEVDef, virDomainSEVDefFree); +void virDomainSecDefFree(virDomainSecDef *def); +G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainSecDef, virDomainSecDefFree); void virDomainDeviceDefFree(virDomainDeviceDef *def); G_DEFINE_AUTOPTR_CLEANUP_FUNC(virDomainDeviceDef, virDomainDeviceDefFree); diff --git a/src/conf/virconftypes.h b/src/conf/virconftypes.h index b21068486e..21420ba8ea 100644 --- a/src/conf/virconftypes.h +++ b/src/conf/virconftypes.h @@ -202,6 +202,8 @@ typedef struct _virDomainResourceDef virDomainResourceDef; typedef struct _virDomainSEVDef virDomainSEVDef; +typedef struct _virDomainSecDef virDomainSecDef; + typedef struct _virDomainShmemDef virDomainShmemDef; typedef struct _virDomainSmartcardDef virDomainSmartcardDef; diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index 038d6478b2..f2d99abcfa 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -856,7 +856,9 @@ qemuSetupDevicesCgroup(virDomainObj *vm) return -1; } - if (vm->def->sev && qemuSetupSEVCgroup(vm) < 0) + if (vm->def->sec && + vm->def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV && + qemuSetupSEVCgroup(vm) < 0) return -1; return 0; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index ea513693f7..6a1383f255 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -6966,11 +6966,20 @@ qemuBuildMachineCommandLine(virCommand *cmd, if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_LOADPARM)) qemuAppendLoadparmMachineParm(&buf, def); - if (def->sev) { - if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_CONFIDENTAL_GUEST_SUPPORT)) { - virBufferAddLit(&buf, ",confidential-guest-support=sev0"); - } else { - virBufferAddLit(&buf, ",memory-encryption=sev0"); + if (def->sec) { + switch ((virDomainLaunchSecurity) def->sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_CONFIDENTAL_GUEST_SUPPORT)) { + virBufferAddLit(&buf, ",confidential-guest-support=sev0"); + } else { + virBufferAddLit(&buf, ",memory-encryption=sev0"); + } + break; + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + break; + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + virReportEnumRangeError(virDomainLaunchSecurity, def->sec->sectype); + return -1; } } @@ -9860,6 +9869,28 @@ qemuBuildSEVCommandLine(virDomainObj *vm, virCommand *cmd, return 0; } + +static int +qemuBuildSecCommandLine(virDomainObj *vm, virCommand *cmd, + virDomainSecDef *sec) +{ + if (!sec) + return 0; + + switch ((virDomainLaunchSecurity) sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + return qemuBuildSEVCommandLine(vm, cmd, sec->sev); + break; + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + break; + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + virReportEnumRangeError(virDomainLaunchSecurity, sec->sectype); + return -1; + } + + return 0; +} + static int qemuBuildVMCoreInfoCommandLine(virCommand *cmd, const virDomainDef *def) @@ -10559,7 +10590,7 @@ qemuBuildCommandLine(virQEMUDriver *driver, if (qemuBuildVMCoreInfoCommandLine(cmd, def) < 0) return NULL; - if (qemuBuildSEVCommandLine(vm, cmd, def->sev) < 0) + if (qemuBuildSecCommandLine(vm, cmd, def->sec) < 0) return NULL; if (snapshot) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 1ee0e7ebc0..d8be868cb4 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -19848,7 +19848,7 @@ qemuDomainGetLaunchSecurityInfo(virDomainPtr domain, if (virDomainGetLaunchSecurityInfoEnsureACL(domain->conn, vm->def) < 0) goto cleanup; - if (vm->def->sev) { + if (vm->def->sec && vm->def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { if (qemuDomainGetSEVMeasurement(driver, vm, params, nparams, flags) < 0) goto cleanup; } diff --git a/src/qemu/qemu_firmware.c b/src/qemu/qemu_firmware.c index e17b024b06..6e8e7b4ae5 100644 --- a/src/qemu/qemu_firmware.c +++ b/src/qemu/qemu_firmware.c @@ -1053,15 +1053,15 @@ qemuFirmwareMatchDomain(const virDomainDef *def, return false; } - if (def->sev && - def->sev->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { + if (def->sec && + def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { if (!supportsSEV) { VIR_DEBUG("Domain requires SEV, firmware '%s' doesn't support it", path); return false; } - - if (def->sev->policy & VIR_QEMU_FIRMWARE_AMD_SEV_ES_POLICY && + if (def->sec->sev && + def->sec->sev->policy & VIR_QEMU_FIRMWARE_AMD_SEV_ES_POLICY && !supportsSEVES) { VIR_DEBUG("Domain requires SEV-ES, firmware '%s' doesn't support it", path); diff --git a/src/qemu/qemu_namespace.c b/src/qemu/qemu_namespace.c index 98495e8ef8..35c8eb83fd 100644 --- a/src/qemu/qemu_namespace.c +++ b/src/qemu/qemu_namespace.c @@ -594,16 +594,26 @@ static int qemuDomainSetupLaunchSecurity(virDomainObj *vm, GSList **paths) { - virDomainSEVDef *sev = vm->def->sev; + virDomainSecDef *sec = vm->def->sec; - if (!sev || sev->sectype != VIR_DOMAIN_LAUNCH_SECURITY_SEV) + if (!sec) return 0; - VIR_DEBUG("Setting up launch security"); + switch ((virDomainLaunchSecurity) sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + VIR_DEBUG("Setting up launch security for SEV"); - *paths = g_slist_prepend(*paths, g_strdup(QEMU_DEV_SEV)); + *paths = g_slist_prepend(*paths, g_strdup(QEMU_DEV_SEV)); + + VIR_DEBUG("Set up launch security for SEV"); + break; + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + break; + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + virReportEnumRangeError(virDomainLaunchSecurity, sec->sectype); + return -1; + } - VIR_DEBUG("Set up launch security"); return 0; } diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 2b03b0ab98..ee39ff27fe 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -6480,7 +6480,7 @@ qemuProcessUpdateSEVInfo(virDomainObj *vm) { qemuDomainObjPrivate *priv = vm->privateData; virQEMUCaps *qemuCaps = priv->qemuCaps; - virDomainSEVDef *sev = vm->def->sev; + virDomainSEVDef *sev = vm->def->sec->sev; virSEVCapability *sevCaps = NULL; /* if platform specific info like 'cbitpos' and 'reducedPhysBits' have @@ -6636,7 +6636,7 @@ qemuProcessPrepareDomain(virQEMUDriver *driver, for (i = 0; i < vm->def->nshmems; i++) qemuDomainPrepareShmemChardev(vm->def->shmems[i]); - if (vm->def->sev) { + if (vm->def->sec && vm->def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { VIR_DEBUG("Updating SEV platform info"); if (qemuProcessUpdateSEVInfo(vm) < 0) return -1; @@ -6672,12 +6672,13 @@ qemuProcessSEVCreateFile(virDomainObj *vm, static int -qemuProcessPrepareSEVGuestInput(virDomainObj *vm) +qemuProcessPrepareSEVGuestInput(virDomainObj *vm, + virDomainSecDef *sec) { - virDomainSEVDef *sev = vm->def->sev; + virDomainSEVDef *sev = sec->sev; if (!sev) - return 0; + return -1; VIR_DEBUG("Preparing SEV guest"); @@ -6695,6 +6696,28 @@ qemuProcessPrepareSEVGuestInput(virDomainObj *vm) } +static int +qemuProcessPrepareLaunchSecurityGuestInput(virDomainObj *vm) +{ + virDomainSecDef *sec = vm->def->sec; + + if (!sec) + return 0; + + switch ((virDomainLaunchSecurity) sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + return qemuProcessPrepareSEVGuestInput(vm, sec); + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + break; + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + virReportEnumRangeError(virDomainLaunchSecurity, sec->sectype); + return -1; + } + + return 0; +} + + static int qemuProcessPrepareHostStorage(virQEMUDriver *driver, virDomainObj *vm, @@ -6874,7 +6897,7 @@ qemuProcessPrepareHost(virQEMUDriver *driver, if (qemuExtDevicesPrepareHost(driver, vm) < 0) return -1; - if (qemuProcessPrepareSEVGuestInput(vm) < 0) + if (qemuProcessPrepareLaunchSecurityGuestInput(vm) < 0) return -1; return 0; diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c index 382473d03b..957dbc906c 100644 --- a/src/qemu/qemu_validate.c +++ b/src/qemu/qemu_validate.c @@ -1214,12 +1214,22 @@ qemuValidateDomainDef(const virDomainDef *def, if (qemuValidateDomainDefPanic(def, qemuCaps) < 0) return -1; - if (def->sev && - !virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST)) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("SEV launch security is not supported with " - "this QEMU binary")); - return -1; + if (def->sec) { + switch ((virDomainLaunchSecurity) def->sec->sectype) { + case VIR_DOMAIN_LAUNCH_SECURITY_SEV: + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST)) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("SEV launch security is not supported with " + "this QEMU binary")); + return -1; + } + break; + case VIR_DOMAIN_LAUNCH_SECURITY_NONE: + break; + case VIR_DOMAIN_LAUNCH_SECURITY_LAST: + virReportEnumRangeError(virDomainLaunchSecurity, def->sec->sectype); + return -1; + } } if (def->naudios > 1 && diff --git a/src/security/security_dac.c b/src/security/security_dac.c index 76bfce7762..eb4b0f7529 100644 --- a/src/security/security_dac.c +++ b/src/security/security_dac.c @@ -1982,7 +1982,7 @@ virSecurityDACRestoreAllLabel(virSecurityManager *mgr, rc = -1; } - if (def->sev) { + if (def->sec && def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { if (virSecurityDACRestoreSEVLabel(mgr, def) < 0) rc = -1; } @@ -2189,7 +2189,7 @@ virSecurityDACSetAllLabel(virSecurityManager *mgr, return -1; } - if (def->sev) { + if (def->sec && def->sec->sectype == VIR_DOMAIN_LAUNCH_SECURITY_SEV) { if (virSecurityDACSetSEVLabel(mgr, def) < 0) return -1; } diff --git a/tests/qemuxml2argvdata/launch-security-sev-missing-policy.x86_64-2.12.0.err b/tests/qemuxml2argvdata/launch-security-sev-missing-policy.x86_64-2.12.0.err new file mode 100644 index 0000000000..63eaf64071 --- /dev/null +++ b/tests/qemuxml2argvdata/launch-security-sev-missing-policy.x86_64-2.12.0.err @@ -0,0 +1 @@ +XML error: Failed to get launch security policy for launch security type SEV diff --git a/tests/qemuxml2argvdata/launch-security-sev-missing-policy.xml b/tests/qemuxml2argvdata/launch-security-sev-missing-policy.xml new file mode 100644 index 0000000000..5461b06c9d --- /dev/null +++ b/tests/qemuxml2argvdata/launch-security-sev-missing-policy.xml @@ -0,0 +1,34 @@ +<domain type='kvm'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219100</memory> + <currentMemory unit='KiB'>219100</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='x86_64' machine='pc-1.0'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu-system-x86_64</emulator> + <disk type='block' device='disk'> + <driver name='qemu' type='raw'/> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='ide' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <input type='mouse' bus='ps2'/> + <input type='keyboard' bus='ps2'/> + <memballoon model='none'/> + </devices> + <launchSecurity type='sev'> + <dhCert>AQAAAAAOAAAAQAAAAAOAAAAQAAAAAOAAAAQAAAAAOAAAAQAAAAAOAAA</dhCert> + <session>IHAVENOIDEABUTJUSTPROVIDINGASTRING</session> + </launchSecurity> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 7fed871c9e..04806ef0e9 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -3456,6 +3456,7 @@ mymain(void) DO_TEST_CAPS_VER("launch-security-sev", "2.12.0"); DO_TEST_CAPS_VER("launch-security-sev", "6.0.0"); DO_TEST_CAPS_VER("launch-security-sev-missing-platform-info", "2.12.0"); + DO_TEST_CAPS_VER_PARSE_ERROR("launch-security-sev-missing-policy", "2.12.0"); DO_TEST_CAPS_LATEST("vhost-user-fs-fd-memory"); DO_TEST_CAPS_LATEST("vhost-user-fs-hugepages"); -- 2.30.2

Add s390-pv-guest capability. Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml | 1 + 3 files changed, 4 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 059d6badf2..25774ba1c1 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -636,6 +636,7 @@ VIR_ENUM_IMPL(virQEMUCaps, /* 405 */ "confidential-guest-support", "query-display-options", + "s390-pv-guest", ); @@ -1354,6 +1355,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = { { "input-linux", QEMU_CAPS_INPUT_LINUX }, { "virtio-gpu-gl-pci", QEMU_CAPS_VIRTIO_GPU_GL_PCI }, { "virtio-vga-gl", QEMU_CAPS_VIRTIO_VGA_GL }, + { "s390-pv-guest", QEMU_CAPS_S390_PV_GUEST }, }; diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index b2878312ac..c79ace15bc 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -616,6 +616,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */ /* 405 */ QEMU_CAPS_MACHINE_CONFIDENTAL_GUEST_SUPPORT, /* -machine confidential-guest-support */ QEMU_CAPS_QUERY_DISPLAY_OPTIONS, /* 'query-display-options' qmp command present */ + QEMU_CAPS_S390_PV_GUEST, /* -object s390-pv-guest,... */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml index 1a0e75570c..4b2df16ced 100644 --- a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml @@ -168,6 +168,7 @@ <flag name='input-linux'/> <flag name='confidential-guest-support'/> <flag name='query-display-options'/> + <flag name='s390-pv-guest'/> <version>6000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>39100242</microcodeVersion> -- 2.30.2

Add documentation for launch security type s390-pv. Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> --- docs/formatdomain.rst | 7 ++++ docs/kbase/s390_protected_virt.rst | 55 +++++++++++++++++++++++++----- 2 files changed, 54 insertions(+), 8 deletions(-) diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst index c6dede053f..a1b028c4ad 100644 --- a/docs/formatdomain.rst +++ b/docs/formatdomain.rst @@ -8078,6 +8078,13 @@ Note: DEA/TDEA is synonymous with DES/TDES. Launch Security --------------- +Specifying ``<launchSecurity type='s390-pv'\>`` in a s390 domain prepares +the guest to run in protected virtualization secure mode, also known as +IBM Secure Execution. For more required host and guest preparation steps, see +`Protected Virtualization on s390 <kbase/s390_protected_virt.html>`__ +:since:`Since 7.5.0` + + The contents of the ``<launchSecurity type='sev'>`` element is used to provide the guest owners input used for creating an encrypted VM using the AMD SEV feature (Secure Encrypted Virtualization). SEV is an extension to the AMD-V diff --git a/docs/kbase/s390_protected_virt.rst b/docs/kbase/s390_protected_virt.rst index 1718a556d4..66203568d9 100644 --- a/docs/kbase/s390_protected_virt.rst +++ b/docs/kbase/s390_protected_virt.rst @@ -127,10 +127,13 @@ Protected virtualization guests support I/O using virtio devices. As the virtio data structures of secure guests are not accessible by the host, it is necessary to use shared memory ('bounce buffers'). -To enable virtio devices to use shared buffers, it is necessary -to configure them with platform_iommu enabled. This can done by adding -``iommu='on'`` to the driver element of a virtio device definition in the -guest's XML, e.g. +Since libvirt 7.5.0 the +`<launchSecurity> <https://libvirt.org/formatdomain.html#launchSecurity>`__ +element with type ``s390-pv`` should be used on protected virtualization guests. +Without ``launchSecurity`` you must enable all virtio devices to use shared +buffers by configuring them with platform_iommu enabled. +This can done by adding ``iommu='on'`` to the driver element of a virtio +device definition in the guest's XML, e.g. :: @@ -140,8 +143,10 @@ guest's XML, e.g. <driver name='vhost' iommu='on'/> </interface> -It is mandatory to define all virtio bus devices in this way to -prevent the host from attempting to access protected memory. +Unless you are using ``launchSecurity`` you must define all virtio bus +devices in this way to prevent the host from attempting to access +protected memory. + Ballooning will not work and is fenced by QEMU. It should be disabled by specifying @@ -158,8 +163,42 @@ allocated 2K entries. A commonly used value for swiotlb is 262144. Example guest definition ======================== -Minimal domain XML for a protected virtualization guest, essentially -it's mostly about the ``iommu`` property +Minimal domain XML for a protected virtualization guest with +the ``launchSecurity`` element of type ``s390-pv`` + +:: + + <domain type='kvm'> + <name>protected</name> + <memory unit='KiB'>2048000</memory> + <currentMemory unit='KiB'>2048000</currentMemory> + <vcpu>1</vcpu> + <os> + <type arch='s390x'>hvm</type> + </os> + <cpu mode='host-model'/> + <devices> + <disk type='file' device='disk'> + <driver name='qemu' type='qcow2' cache='none' io='native'> + <source file='/var/lib/libvirt/images/protected.qcow2'/> + <target dev='vda' bus='virtio'/> + </disk> + <interface type='network'> + <source network='default'/> + <model type='virtio'/> + </interface> + <console type='pty'/> + <memballoon model='none'/> + </devices> + <launchSecurity type='s390-pv'/> + </domain> + + +Example guest definition without launchSecurity +=============================================== + +Minimal domain XML for a protected virtualization guest using the +``iommu='on'`` setting for each virtio device. :: -- 2.30.2