[libvirt][PATCH v13 6/6] qemu: Add command-line to generate SGX EPC memory backend
Lin Yang
lin.a.yang at intel.com
Fri Jul 1 19:14:46 UTC 2022
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 at intel.com>
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
Signed-off-by: Haibin Huang <haibin.huang at intel.com>
---
src/qemu/qemu_alias.c | 3 +-
src/qemu/qemu_command.c | 86 ++++++++++++++++++-
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, 198 insertions(+), 12 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_alias.c b/src/qemu/qemu_alias.c
index 5ebeb82f92..7482ea3cc8 100644
--- a/src/qemu/qemu_alias.c
+++ b/src/qemu/qemu_alias.c
@@ -466,7 +466,8 @@ qemuDeviceMemoryGetAliasID(virDomainDef *def,
* valid */
if (!oldAlias &&
mem->model != VIR_DOMAIN_MEMORY_MODEL_VIRTIO_PMEM &&
- mem->model != VIR_DOMAIN_MEMORY_MODEL_VIRTIO_MEM)
+ mem->model != VIR_DOMAIN_MEMORY_MODEL_VIRTIO_MEM &&
+ mem->model != VIR_DOMAIN_MEMORY_MODEL_SGX_EPC)
return mem->info.addr.dimm.slot;
for (i = 0; i < def->nmems; i++) {
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 7ca183ded7..fcfcc32df1 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3743,6 +3743,10 @@ qemuBuildMemoryBackendProps(virJSONValue **backendProps,
if (systemMemory)
disableCanonicalPath = true;
+ } else if (mem->model == VIR_DOMAIN_MEMORY_MODEL_SGX_EPC) {
+ backendType = "memory-backend-epc";
+ if (!priv->memPrealloc)
+ prealloc = true;
} else if (useHugepage || mem->nvdimmPath || memAccess ||
def->mem.source == VIR_DOMAIN_MEMORY_SOURCE_FILE) {
@@ -6955,6 +6959,9 @@ qemuBuildMachineCommandLine(virCommand *cmd,
virCPUDef *cpu = def->cpu;
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
size_t i;
+ virSGXCapabilityPtr sgxCaps = NULL;
+ int epcNum = 0;
+ int targetNode;
virCommandAddArg(cmd, "-machine");
virBufferAdd(&buf, def->os.machine, -1);
@@ -7176,6 +7183,61 @@ qemuBuildMachineCommandLine(virCommand *cmd,
virBufferAddLit(&buf, ",graphics=off");
}
+ /* add sgx epc memory to -machine parameter */
+ sgxCaps = virQEMUCapsGetSGXCapabilities(qemuCaps);
+ for (i = 0; i < def->nmems; i++) {
+ switch (def->mems[i]->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_SGX_EPC:
+ targetNode = def->mems[i]->targetNode;
+
+ if (targetNode >= (int) virDomainNumaGetNodeCount(def->numa)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("can't add sgx epc for guest node '%d' as "
+ "the guest has only '%zu' NUMA nodes configured"),
+ targetNode, virDomainNumaGetNodeCount(def->numa));
+ return -1;
+ }
+
+ 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 if (sgxCaps->nSections > 0) {
+ /* The .node attribute is required since QEMU provide EPC NUMA info */
+ if (targetNode < 0)
+ /* set NUMA target node to 0 by default if user doesn't
+ * specify it
+ */
+ targetNode = 0;
+
+ 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_NVDIMM:
+ 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;
+ }
+ }
+
virCommandAddArgBuffer(cmd, &buf);
return 0;
@@ -7772,11 +7834,27 @@ qemuBuildMemoryDeviceCommandLine(virCommand *cmd,
if (qemuBuildMemoryDimmBackendStr(cmd, def->mems[i], def, cfg, priv) < 0)
return -1;
- if (!(props = qemuBuildMemoryDeviceProps(cfg, priv, def, def->mems[i])))
- return -1;
+ switch (def->mems[i]->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
+ case VIR_DOMAIN_MEMORY_MODEL_DIMM:
+ case VIR_DOMAIN_MEMORY_MODEL_VIRTIO_PMEM:
+ case VIR_DOMAIN_MEMORY_MODEL_VIRTIO_MEM:
+ if (!(props = qemuBuildMemoryDeviceProps(cfg, priv, def, def->mems[i])))
+ return -1;
- if (qemuBuildDeviceCommandlineFromJSON(cmd, props, def, priv->qemuCaps) < 0)
- return -1;
+ if (qemuBuildDeviceCommandlineFromJSON(cmd, props, def, priv->qemuCaps) < 0)
+ return -1;
+
+ break;
+
+ /* sgx epc memory will be added to -machine parameter, so skip here */
+ case VIR_DOMAIN_MEMORY_MODEL_SGX_EPC:
+ break;
+
+ case VIR_DOMAIN_MEMORY_MODEL_NONE:
+ case VIR_DOMAIN_MEMORY_MODEL_LAST:
+ break;
+ }
}
return 0;
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index c900956f82..108643512c 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -7606,13 +7606,25 @@ 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);
@@ -7656,6 +7668,21 @@ 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/qemuxml2argvdata/sgx-epc-numa.x86_64-latest.args b/tests/qemuxml2argvdata/sgx-epc-numa.x86_64-latest.args
new file mode 100644
index 0000000000..59c1041679
--- /dev/null
+++ b/tests/qemuxml2argvdata/sgx-epc-numa.x86_64-latest.args
@@ -0,0 +1,40 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine q35,usb=off,dump-guest-core=off,sgx-epc.0.memdev=memepc0,sgx-epc.0.node=0,sgx-epc.1.memdev=memepc1,sgx-epc.1.node=1 \
+-accel tcg \
+-cpu qemu64 \
+-m 214 \
+-overcommit mem-lock=off \
+-smp 2,sockets=2,cores=1,threads=1 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node0","size":112197632}' \
+-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
+-object '{"qom-type":"memory-backend-ram","id":"ram-node1","size":112197632}' \
+-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device '{"driver":"pcie-root-port","port":8,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x1"}' \
+-device '{"driver":"pcie-root-port","port":9,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x1.0x1"}' \
+-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"}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.1","addr":"0x0"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/sgx-epc.x86_64-6.2.0.args b/tests/qemuxml2argvdata/sgx-epc.x86_64-6.2.0.args
new file mode 100644
index 0000000000..56c476b777
--- /dev/null
+++ b/tests/qemuxml2argvdata/sgx-epc.x86_64-6.2.0.args
@@ -0,0 +1,37 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pc-q35-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram,sgx-epc.0.memdev=memepc0,sgx-epc.1.memdev=memepc1 \
+-accel tcg \
+-cpu qemu64 \
+-m 134 \
+-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":140509184}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device pcie-root-port,port=8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1 \
+-device pcie-root-port,port=9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
+-object '{"qom-type":"memory-backend-epc","id":"memepc0","prealloc":true,"size":67108864}' \
+-object '{"qom-type":"memory-backend-epc","id":"memepc1","prealloc":true,"size":16777216}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device virtio-balloon-pci,id=balloon0,bus=pci.1,addr=0x0 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 48dd20458e..a2f488dff0 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -3461,6 +3461,9 @@ 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");
+
if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
virFileDeleteTree(fakerootdir);
--
2.25.1
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