Re: [PATCH v14 15/15] qemu: Add command-line to generate SGX EPC memory backend

From: Lin Yang <lin.a.yang(a)intel.com&gt; According to the result parsing from xml, add the argument of SGX EPC memory backend into QEMU command line. With NUMA config: #qemu-system-x86_64 \ ...... \ -object '{"qom-type":"memory-backend-epc","id":"memepc0","prealloc":true,"size":67108864,"host-nodes":[0,1],"policy":"bind"}' \ -object '{"qom-type":"memory-backend-epc","id":"memepc1","prealloc":true,"size":16777216,"host-nodes":[2,3],"policy":"bind"}' \ -machine sgx-epc.0.memdev=memepc0,sgx-epc.0.node=0,sgx-epc.1.memdev=memepc1,sgx-epc.1.node=1 Without NUMA config: #qemu-system-x86_64 \ ...... \ -object '{"qom-type":"memory-backend-epc","id":"memepc0","prealloc":true,"size":67108864}' \ -object '{"qom-type":"memory-backend-epc","id":"memepc1","prealloc":true,"size":16777216}' \ -machine sgx-epc.0.memdev=memepc0,sgx-epc.1.memdev=memepc1 Signed-off-by: Lin Yang <lin.a.yang(a)intel.com&gt; Signed-off-by: Haibin Huang <haibin.huang(a)intel.com&gt; Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_alias.c | 3 +- src/qemu/qemu_command.c | 82 +++++++++++++++++-- src/qemu/qemu_monitor_json.c | 41 ++++++++-- .../sgx-epc-numa.x86_64-latest.args | 40 +++++++++ .../sgx-epc.x86_64-6.2.0.args | 37 +++++++++ tests/qemuxml2argvtest.c | 3 + 6 files changed, 190 insertions(+), 16 deletions(-) create mode 100644 tests/qemuxml2argvdata/sgx-epc-numa.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/sgx-epc.x86_64-6.2.0.args

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index f3f6870c58..304a2ae6d1 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c

@@ -3733,7 +3737,6 @@ qemuBuildMemoryBackendProps(virJSONValue **backendProps, if (systemMemory) disableCanonicalPath = true; - } else if (useHugepage || mem->nvdimmPath || memAccess ||

def->mem.source == VIR_DOMAIN_MEMORY_SOURCE_FILE) {

@@ -7094,8 +7100,52 @@ qemuAppendDomainMemoryMachineParams(virBuffer *buf, virBufferAddLit(buf, ",mem-merge=off"); for (i = 0; i < def->nmems; i++) { - if (def->mems[i]->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM) { - virBufferAddLit(buf, ",nvdimm=on"); + int targetNode = def->mems[i]->targetNode; + + switch (def->mems[i]->model) { + case VIR_DOMAIN_MEMORY_MODEL_NVDIMM: + if (!nvdimmAdded) { + virBufferAddLit(buf, ",nvdimm=on"); + nvdimmAdded = true; + } + break; + + case VIR_DOMAIN_MEMORY_MODEL_SGX_EPC: + /* add sgx epc memory to -machine parameter */ + + if (targetNode < 0) { + /* set NUMA target node to 0 by default if user doesn't + * specify it. */ + targetNode = 0; + } + + if (sgxCaps->nsections == 0) { + /* Assume QEMU cannot specify guest NUMA node for each SGX EPC, + * because it doesn't provide EPC NUMA info + */

+ if (targetNode > 0) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("can't add SGX EPC for guest node '%d' because this QEMU version didn't provide SGX EPC NUMA info"), + targetNode); + return -1; + } + + virBufferAsprintf(buf, ",sgx-epc.%d.memdev=mem%s", + epcNum, def->mems[i]->info.alias); + } else { + /* The .node attribute is required since QEMU provide EPC NUMA info */ + virBufferAsprintf(buf, ",sgx-epc.%d.memdev=mem%s,sgx-epc.%d.node=%d", + epcNum, def->mems[i]->info.alias, epcNum, targetNode); + } + + epcNum++; + break; + + case VIR_DOMAIN_MEMORY_MODEL_DIMM: + case VIR_DOMAIN_MEMORY_MODEL_VIRTIO_PMEM: + case VIR_DOMAIN_MEMORY_MODEL_VIRTIO_MEM: + case VIR_DOMAIN_MEMORY_MODEL_NONE: + case VIR_DOMAIN_MEMORY_MODEL_LAST: break; } }

diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index b045efa203..c41a6355ba 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -7575,13 +7575,25 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitor *mon, return -1; } - /* While 'id' attribute is marked as optional in QEMU's QAPI - * specification, Libvirt always sets it. Thus we can fail if not - * present. */ - if (!(devalias = virJSONValueObjectGetString(dimminfo, "id"))) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("dimm memory info data is missing 'id'")); - return -1; + if (STREQ(type, "dimm") || STREQ(type, "nvdimm") || STREQ(type, "virtio-mem")) { + /* While 'id' attribute is marked as optional in QEMU's QAPI + * specification, Libvirt always sets it. Thus we can fail if not + * present. */ + if (!(devalias = virJSONValueObjectGetString(dimminfo, "id"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("dimm memory info data is missing 'id'")); + return -1; + } + } else if (STREQ(type, "sgx-epc")) { + if (!(devalias = virJSONValueObjectGetString(dimminfo, "memdev"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("sgx-epc memory info data is missing 'memdev'")); + return -1;

+ } + } else { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("%s memory device info is not handled yet"), type); + return -1; } meminfo = g_new0(qemuMonitorMemoryDeviceInfo, 1); @@ -7625,6 +7637,21 @@ qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitor *mon, _("malformed/missing size in virtio memory info")); return -1; } + } else if (STREQ(type, "sgx-epc")) { + /* sgx-epc memory devices */ + if (virJSONValueObjectGetNumberUlong(dimminfo, "memaddr", + &meminfo->address) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing memaddr in sgx-epc memory info"));

+ return -1; + } + + if (virJSONValueObjectGetNumberUlong(dimminfo, "size", + &meminfo->size) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing size in sgx-epc memory info")); + return -1; + } } else { /* type not handled yet */ continue;

diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 05537d9e96..7a4c09b172 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -3470,6 +3470,9 @@ mymain(void) /* HVF guests should not work on Linux with KVM */ DO_TEST_CAPS_LATEST_PARSE_ERROR("hvf-x86_64-q35-headless"); + DO_TEST_CAPS_VER("sgx-epc", "6.2.0"); + DO_TEST_CAPS_LATEST("sgx-epc-numa");