On 01/30/2015 06:20 AM, Peter Krempa wrote: s/a XML/an XML/ Might be nice to demonstrate that XML here in the commit message, not just in formatdomain.html. s/drivers's/drivers'/ 123 is unusual; the example would look more realistic with a power of 2. Hmm. Historically, <memory> was the maximum memory, then ballooning was introduced and <currentMemory> was added to show the live difference between the ballooned current value and the boot-up maximum. But with the idea of hot-plug, I see where you are coming from - the balloon can only inflate or deflate up to the amount of memory currently plugged in, so <maxMemory> is the startup maximum, <memory> becomes the amount plugged in, and <currentMemory> reflects the balloon value (that is, current <= memory <= max). So I guess this makes sense; it may be more interesting figuring out how to expose it all through virsh. Is a hypervisor free to reject requests that aren't aligned properly? With <memory>, we had the odd situation that we allowed the hypervisor to round requests up, so that live numbers were different than the original startup numbers; it might be easier to not repeat that. This says the slots attribute mandatory; is there ever a reason to allow it to be optional (defaulting to one slot, an all-or-none hotplug)? Based on the XML, mem.memory_slots cannot be specified unless max_memory is also present (at least, assuming that you enforce that <maxMemory> be At least this agrees with the RelaxNG that slots is mandatory, for now. Shorter, but not necessarily easier to understand, as: if (!def->mem.max_memory != !def->mem.memory_slots) { s/sepcified/specified/ Overall, looks reasonable for now, although I want to get through the series first to see if anything else might be needed. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org

On Fri, Feb 06, 2015 at 06:07:35PM +0100, Peter Krempa wrote: I think we should pick '2' - <memory> should always reflect the amount of RAM currently plugged into the guest - ie sum of all DIMMS' capacities. If apps choose to use <maxMemory> and hotplug dimms, they'll easily know to re-read <memory> periodically. Likewise the virDomainGetInfo and virDomainGetMaxMemory API will need to be updated too. Damn our API naming is annoying in this respect While QEMU enforces that you always provide slots, is there any value in just defaulting in the driver. eg if ommitted in the XML, the number of slots just gets filled in by the driver with a sensible value for that driver. eg we could default to adding 16 slots. Guess it isn't a big deal since apps already have to add a new <maxMemory> element. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

On 01/30/2015 08:21 AM, Peter Krempa wrote: My git am -3 wasn't happy with this change - didn't want to apply it: fatal: sha1 information is lacking or useless (docs/formatdomain.html.in). I just removed it and kept going... John

ACPI Dimm devices are described by the slot and base address. Add a new address type to be able to describe such address. --- docs/schemas/domaincommon.rng | 18 +++++++++++ src/conf/domain_conf.c | 69 ++++++++++++++++++++++++++++++++++++++++++- src/conf/domain_conf.h | 9 ++++++ 3 files changed, 95 insertions(+), 1 deletion(-) diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 2dbfbec..d7e27c2 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -3944,6 +3944,18 @@ </attribute> </optional> </define> + <define name="acpidimmaddress"> + <optional> + <attribute name="slot"> + <ref name="unsignedInt"/> + </attribute> + </optional> + <optional> + <attribute name="base"> + <ref name="hexuint"/> + </attribute> + </optional> + </define> <define name="devices"> <element name="devices"> <interleave> @@ -4358,6 +4370,12 @@ </attribute> <ref name="isaaddress"/> </group> + <group> + <attribute name="type"> + <value>acpi-dimm</value> + </attribute> + <ref name="acpidimmaddress"/> + </group> </choice> </element> </define> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0cfc638..0b9fb06 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -249,7 +249,8 @@ VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST, "virtio-s390", "ccw", "virtio-mmio", - "isa") + "isa", + "acpi-dimm") VIR_ENUM_IMPL(virDomainDiskDevice, VIR_DOMAIN_DISK_DEVICE_LAST, "disk", @@ -3484,6 +3485,12 @@ virDomainDeviceInfoFormat(virBufferPtr buf, virBufferAsprintf(buf, " irq='0x%x'", info->addr.isa.irq); break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM: + virBufferAsprintf(buf, " slot='%u'", info->addr.acpiDimm.slot); + virBufferAsprintf(buf, " base='0x%llx'", info->addr.acpiDimm.base); + + break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390: case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE: case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST: @@ -3853,6 +3860,41 @@ virDomainDeviceISAAddressParseXML(xmlNodePtr node, return ret; } + +static int +virDomainDeviceACPIDimmAddressParseXML(xmlNodePtr node, + virDomainDeviceACPIDimmAddressPtr addr) +{ + int ret = -1; + char *tmp = NULL; + + if (!(tmp = virXMLPropString(node, "slot")) || + virStrToLong_uip(tmp, NULL, 10, &addr->slot) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid or missing acpi-dimm slot id '%s'"), + NULLSTR(tmp)); + goto cleanup; + } + VIR_FREE(tmp); + + if (!(tmp = virXMLPropString(node, "base")) || + virStrToLong_ullp(tmp, NULL, 16, &addr->base) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid or missing acpi-dimm base address '%s'"), + NULLSTR(tmp)); + goto cleanup; + } + VIR_FREE(tmp); + + ret = 0; + + cleanup: + VIR_FREE(tmp); + + return ret; +} + + /* Parse the XML definition for a device address * @param node XML nodeset to parse for device address definition */ @@ -3994,6 +4036,11 @@ virDomainDeviceInfoParseXML(xmlNodePtr node, _("virtio-s390 bus doesn't have an address")); goto cleanup; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM: + if (virDomainDeviceACPIDimmAddressParseXML(address, &info->addr.acpiDimm) < 0) + goto cleanup; + break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE: case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST: break; @@ -14842,6 +14889,26 @@ virDomainDeviceInfoCheckABIStability(virDomainDeviceInfoPtr src, } break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM: + if (src->addr.acpiDimm.slot != dst->addr.acpiDimm.slot) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target device acpi dimm slot %d does not match " + "source %d"), + dst->addr.acpiDimm.slot, + src->addr.acpiDimm.slot); + return false; + } + + if (src->addr.acpiDimm.base != dst->addr.acpiDimm.base) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target device acpi dimm base addres '%llx' does " + "not match source '%llx'"), + dst->addr.acpiDimm.base, + src->addr.acpiDimm.base); + return false; + } + break; + case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB: case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO: case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390: diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 97be518..f01c2ab 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -234,6 +234,7 @@ typedef enum { VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ISA, + VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST } virDomainDeviceAddressType; @@ -309,6 +310,13 @@ struct _virDomainDeviceISAAddress { unsigned int irq; }; +typedef struct _virDomainDeviceACPIDimmAddress virDomainDeviceACPIDimmAddress; +typedef virDomainDeviceACPIDimmAddress *virDomainDeviceACPIDimmAddressPtr; +struct _virDomainDeviceACPIDimmAddress { + unsigned int slot; + unsigned long long base; +}; + typedef struct _virDomainDeviceInfo virDomainDeviceInfo; typedef virDomainDeviceInfo *virDomainDeviceInfoPtr; struct _virDomainDeviceInfo { @@ -327,6 +335,7 @@ struct _virDomainDeviceInfo { virDomainDeviceSpaprVioAddress spaprvio; virDomainDeviceCCWAddress ccw; virDomainDeviceISAAddress isa; + virDomainDeviceACPIDimmAddress acpiDimm; } addr; int mastertype; union { -- 2.2.2

WIP: TODO: docs Also forbid the new device in post parse callback in all driver that implement the callback to warn users right away that the device is not supported with their hypervisor. --- docs/schemas/domaincommon.rng | 50 ++++ src/bhyve/bhyve_domain.c | 5 +- src/conf/domain_conf.c | 317 ++++++++++++++++++++- src/conf/domain_conf.h | 33 +++ src/libvirt_private.syms | 2 + src/libxl/libxl_domain.c | 3 + src/lxc/lxc_domain.c | 4 + src/openvz/openvz_driver.c | 3 + src/qemu/qemu_domain.c | 3 + src/qemu/qemu_driver.c | 13 + src/qemu/qemu_hotplug.c | 3 + src/uml/uml_driver.c | 3 + src/xen/xen_driver.c | 3 + src/xenapi/xenapi_driver.c | 3 + .../qemuxml2argv-memory-hotplug-dimm.xml | 47 +++ 15 files changed, 490 insertions(+), 2 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.xml diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index d7e27c2..6873911 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -3985,6 +3985,7 @@ <ref name="rng"/> <ref name="tpm"/> <ref name="shmem"/> + <ref name="memorydev"/> </choice> </zeroOrMore> <optional> @@ -4396,6 +4397,55 @@ </element> </define> + <define name="memorydev"> + <element name="memory"> + <attribute name="model"> + <choice> + <value>acpi-dimm</value> + </choice> + </attribute> + <interleave> + <optional> + <ref name="memorydev-source"/> + </optional> + <ref name="memorydev-target"/> + <optional> + <ref name="address"/> + </optional> + </interleave> + </element> + </define> + + <define name="memorydev-source"> + <element name="source"> + <interleave> + <optional> + <element name="pagesize"> + <ref name="scaledInteger"/> + </element> + </optional> + <optional> + <element name="nodemask"> + <ref name="cpuset"/> + </element> + </optional> + </interleave> + </element> + </define> + + <define name="memorydev-target"> + <element name="target"> + <interleave> + <element name="size"> + <ref name="scaledInteger"/> + </element> + <element name="node"> + <ref name="unsignedInt"/> + </element> + </interleave> + </element> + </define> + <define name="rng"> <element name="rng"> <attribute name="model"> diff --git a/src/bhyve/bhyve_domain.c b/src/bhyve/bhyve_domain.c index 25ef852..890963e 100644 --- a/src/bhyve/bhyve_domain.c +++ b/src/bhyve/bhyve_domain.c @@ -75,11 +75,14 @@ bhyveDomainDefPostParse(virDomainDefPtr def, } static int -bhyveDomainDeviceDefPostParse(virDomainDeviceDefPtr dev ATTRIBUTE_UNUSED, +bhyveDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, const virDomainDef *def ATTRIBUTE_UNUSED, virCapsPtr caps ATTRIBUTE_UNUSED, void *opaque ATTRIBUTE_UNUSED) { + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0b9fb06..298b574 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -236,7 +236,8 @@ VIR_ENUM_IMPL(virDomainDevice, VIR_DOMAIN_DEVICE_LAST, "rng", "shmem", "tpm", - "panic") + "panic", + "memory") VIR_ENUM_IMPL(virDomainDeviceAddress, VIR_DOMAIN_DEVICE_ADDRESS_TYPE_LAST, "none", @@ -779,6 +780,12 @@ VIR_ENUM_DECL(virDomainBlockJob) VIR_ENUM_IMPL(virDomainBlockJob, VIR_DOMAIN_BLOCK_JOB_TYPE_LAST, "", "", "copy", "", "active-commit") +VIR_ENUM_IMPL(virDomainMemoryModel, VIR_DOMAIN_MEMORY_MODEL_LAST, + "", "acpi-dimm") + +#define VIR_DOMAIN_XML_WRITE_FLAGS VIR_DOMAIN_XML_SECURE +#define VIR_DOMAIN_XML_READ_FLAGS VIR_DOMAIN_XML_INACTIVE + static virClassPtr virDomainObjClass; static virClassPtr virDomainObjListClass; static virClassPtr virDomainXMLOptionClass; @@ -1003,6 +1010,27 @@ virDomainDefCheckUnsupportedMemoryHotplug(virDomainDefPtr def) } +/** + * virDomainDeviceDefCheckUnsupportedMemoryDevice: + * @dev: device definition + * + * Returns -1 if the device definition describes a memory device and reports an + * error. Otherwise returns 0. + */ +int +virDomainDeviceDefCheckUnsupportedMemoryDevice(virDomainDeviceDefPtr dev) +{ + /* This driver doesn't yet know how to handle memory devices */ + if (dev->type == VIR_DOMAIN_DEVICE_MEMORY) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("memory devices are not supported by this driver")); + return -1; + } + + return 0; +} + + static void virDomainObjListDataFree(void *payload, const void *name ATTRIBUTE_UNUSED) { @@ -1934,6 +1962,15 @@ void virDomainRedirFilterDefFree(virDomainRedirFilterDefPtr def) VIR_FREE(def); } +void virDomainMemoryDefFree(virDomainMemoryDefPtr def) +{ + if (!def) + return; + + virDomainDeviceInfoClear(&def->info); + VIR_FREE(def); +} + void virDomainDeviceDefFree(virDomainDeviceDefPtr def) { if (!def) @@ -2003,6 +2040,9 @@ void virDomainDeviceDefFree(virDomainDeviceDefPtr def) case VIR_DOMAIN_DEVICE_PANIC: virDomainPanicDefFree(def->data.panic); break; + case VIR_DOMAIN_DEVICE_MEMORY: + virDomainMemoryDefFree(def->data.memory); + break; case VIR_DOMAIN_DEVICE_LAST: case VIR_DOMAIN_DEVICE_NONE: break; @@ -2200,6 +2240,10 @@ void virDomainDefFree(virDomainDefPtr def) virDomainRNGDefFree(def->rngs[i]); VIR_FREE(def->rngs); + for (i = 0; i < def->nmems; i++) + virDomainMemoryDefFree(def->mems[i]); + VIR_FREE(def->mems); + virDomainTPMDefFree(def->tpm); virDomainPanicDefFree(def->panic); @@ -2709,6 +2753,8 @@ virDomainDeviceGetInfo(virDomainDeviceDefPtr device) return &device->data.tpm->info; case VIR_DOMAIN_DEVICE_PANIC: return &device->data.panic->info; + case VIR_DOMAIN_DEVICE_MEMORY: + return &device->data.memory->info; /* The following devices do not contain virDomainDeviceInfo */ case VIR_DOMAIN_DEVICE_LEASE: @@ -2940,6 +2986,13 @@ virDomainDeviceInfoIterateInternal(virDomainDefPtr def, return -1; } + device.type = VIR_DOMAIN_DEVICE_MEMORY; + for (i = 0; i < def->nmems; i++) { + device.data.memory = def->mems[i]; + if (cb(def, &device, &def->mems[i]->info, opaque) < 0) + return -1; + } + /* Coverity is not very happy with this - all dead_error_condition */ #if !STATIC_ANALYSIS /* This switch statement is here to trigger compiler warning when adding @@ -2972,6 +3025,7 @@ virDomainDeviceInfoIterateInternal(virDomainDefPtr def, case VIR_DOMAIN_DEVICE_PANIC: case VIR_DOMAIN_DEVICE_LAST: case VIR_DOMAIN_DEVICE_RNG: + case VIR_DOMAIN_DEVICE_MEMORY: break; } #endif @@ -11109,6 +11163,119 @@ virDomainPMStateParseXML(xmlXPathContextPtr ctxt, return ret; } + +static int +virDomainMemorySourceDefParseXML(xmlNodePtr node, + xmlXPathContextPtr ctxt, + virDomainMemoryDefPtr def) +{ + int ret = -1; + char *nodemask = NULL; + xmlNodePtr save = ctxt->node; + ctxt->node = node; + + if (virDomainParseMemory("./pagesize", "./pagesize/@unit", ctxt, + &def->pagesize, false, false) < 0) + goto cleanup; + + if ((nodemask = virXPathString("string(./nodemask)", ctxt))) { + if (virBitmapParse(nodemask, 0, &def->sourceNodes, + VIR_DOMAIN_CPUMASK_LEN) < 0) + goto cleanup; + } + + ret = 0; + + cleanup: + VIR_FREE(nodemask); + ctxt->node = save; + return ret; +} + + +static int +virDomainMemoryTargetDefParseXML(xmlNodePtr node, + xmlXPathContextPtr ctxt, + virDomainMemoryDefPtr def) +{ + int ret = -1; + xmlNodePtr save = ctxt->node; + ctxt->node = node; + + if (virXPathInt("string(./node)", ctxt, &def->targetNode) < 0) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("invalid or missing value of memory device node")); + goto cleanup; + } + + if (virDomainParseMemory("./size", "./size/@unit", ctxt, + &def->size, true, false) < 0) + goto cleanup; + + ret = 0; + + cleanup: + ctxt->node = save; + return ret; +} + + +static virDomainMemoryDefPtr +virDomainMemoryDefParseXML(xmlNodePtr memdevNode, + xmlXPathContextPtr ctxt, + unsigned int flags) +{ + char *tmp = NULL; + xmlNodePtr save = ctxt->node; + xmlNodePtr node; + virDomainMemoryDefPtr def; + + ctxt->node = memdevNode; + + if (VIR_ALLOC(def) < 0) + return NULL; + + if (!(tmp = virXMLPropString(memdevNode, "model"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("missing memory model")); + goto error; + } + + if ((def->model = virDomainMemoryModelTypeFromString(tmp)) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("invalid memory model '%s'"), tmp); + goto error; + } + VIR_FREE(tmp); + + /* source */ + if ((node = virXPathNode("./source", ctxt)) && + virDomainMemorySourceDefParseXML(node, ctxt, def) < 0) + goto error; + + /* target */ + if (!(node = virXPathNode("./target", ctxt))) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("missing <target> element for <memory> device")); + goto error; + } + + if (virDomainMemoryTargetDefParseXML(node, ctxt, def) < 0) + goto error; + + if (virDomainDeviceInfoParseXML(memdevNode, NULL, &def->info, flags) < 0) + goto error; + + return def; + + error: + VIR_FREE(tmp); + virDomainMemoryDefFree(def); + ctxt->node = save; + return NULL; +} + + virDomainDeviceDefPtr virDomainDeviceDefParse(const char *xmlStr, const virDomainDef *def, @@ -11243,6 +11410,10 @@ virDomainDeviceDefParse(const char *xmlStr, if (!(dev->data.panic = virDomainPanicDefParseXML(node))) goto error; break; + case VIR_DOMAIN_DEVICE_MEMORY: + if (!(dev->data.memory = virDomainMemoryDefParseXML(node, ctxt, flags))) + goto error; + break; case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_LAST: break; @@ -14438,6 +14609,23 @@ virDomainDefParseXML(xmlDocPtr xml, ctxt->node = node; VIR_FREE(nodes); + /* analysis of memory devices */ + if ((n = virXPathNodeSet("./devices/memory", ctxt, &nodes)) < 0) + goto error; + if (n && VIR_ALLOC_N(def->mems, n) < 0) + goto error; + + for (i = 0; i < n; i++) { + virDomainMemoryDefPtr mem = virDomainMemoryDefParseXML(nodes[i], + ctxt, + flags); + if (!mem) + goto error; + + def->mems[def->nmems++] = mem; + } + VIR_FREE(nodes); + /* analysis of the user namespace mapping */ if ((n = virXPathNodeSet("./idmap/uid", ctxt, &nodes)) < 0) goto error; @@ -15677,6 +15865,39 @@ virDomainPanicDefCheckABIStability(virDomainPanicDefPtr src, return virDomainDeviceInfoCheckABIStability(&src->info, &dst->info); } +static bool +virDomainMemoryDefCheckABIStability(virDomainMemoryDefPtr src, + virDomainMemoryDefPtr dst) +{ + if (src->model != dst->model) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target memory device model '%s' " + "doesn't match source model '%s'"), + virDomainMemoryModelTypeToString(dst->model), + virDomainMemoryModelTypeToString(src->model)); + return false; + } + + if (src->targetNode != dst->targetNode) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target memory device targetNode '%d' " + "doesn't match source targetNode '%d'"), + dst->targetNode, src->targetNode); + return false; + } + + if (src->size != dst->size) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target memory device size '%llu' doesn't match " + "source memory device size '%llu'"), + dst->size, src->size); + return false; + } + + return virDomainDeviceInfoCheckABIStability(&src->info, &dst->info); +} + + /* This compares two configurations and looks for any differences * which will affect the guest ABI. This is primarily to allow * validation of custom XML config passed in during migration @@ -16114,6 +16335,18 @@ virDomainDefCheckABIStability(virDomainDefPtr src, goto error; } + if (src->nmems != dst->nmems) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Target domain memory device count %zu " + "does not match source %zu"), dst->nmems, src->nmems); + goto error; + } + + for (i = 0; i < src->nmems; i++) { + if (!virDomainMemoryDefCheckABIStability(src->mems[i], dst->mems[i])) + goto error; + } + /* Coverity is not very happy with this - all dead_error_condition */ #if !STATIC_ANALYSIS /* This switch statement is here to trigger compiler warning when adding @@ -16145,6 +16378,7 @@ virDomainDefCheckABIStability(virDomainDefPtr src, case VIR_DOMAIN_DEVICE_TPM: case VIR_DOMAIN_DEVICE_PANIC: case VIR_DOMAIN_DEVICE_SHMEM: + case VIR_DOMAIN_DEVICE_MEMORY: break; } #endif @@ -18616,6 +18850,81 @@ virDomainRNGDefFree(virDomainRNGDefPtr def) VIR_FREE(def); } + +static int +virDomainMemorySourceDefFormat(virBufferPtr buf, + virDomainMemoryDefPtr def) +{ + char *bitmap = NULL; + int ret = -1; + + if (!def->pagesize && !def->sourceNodes) + return 0; + + virBufferAddLit(buf, "<source>\n"); + virBufferAdjustIndent(buf, 2); + + if (def->sourceNodes) { + if (!(bitmap = virBitmapFormat(def->sourceNodes))) + goto cleanup; + + virBufferAsprintf(buf, "<nodemask>%s</nodemask>\n", bitmap); + } + + if (def->pagesize) + virBufferAsprintf(buf, "<pagesize unit='KiB'>%llu</pagesize>\n", + def->pagesize); + + virBufferAdjustIndent(buf, -2); + virBufferAddLit(buf, "</source>\n"); + + ret = 0; + + cleanup: + VIR_FREE(bitmap); + return ret; +} + + +static void +virDomainMemoryTargetDefFormat(virBufferPtr buf, + virDomainMemoryDefPtr def) +{ + virBufferAddLit(buf, "<target>\n"); + virBufferAdjustIndent(buf, 2); + + virBufferAsprintf(buf, "<size unit='KiB'>%llu</size>\n", def->size); + virBufferAsprintf(buf, "<node>%d</node>\n", def->targetNode); + + virBufferAdjustIndent(buf, -2); + virBufferAddLit(buf, "</target>\n"); +} + +static int +virDomainMemoryDefFormat(virBufferPtr buf, + virDomainMemoryDefPtr def, + unsigned int flags) +{ + const char *model = virDomainMemoryModelTypeToString(def->model); + + virBufferAsprintf(buf, "<memory model='%s'>\n", model); + virBufferAdjustIndent(buf, 2); + + if (virDomainMemorySourceDefFormat(buf, def) < 0) + return -1; + + virDomainMemoryTargetDefFormat(buf, def); + + if (virDomainDeviceInfoNeedsFormat(&def->info, flags)) { + if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0) + return -1; + } + + virBufferAdjustIndent(buf, -2); + virBufferAddLit(buf, "</memory>\n"); + return 0; +} + static void virDomainVideoAccelDefFormat(virBufferPtr buf, virDomainVideoAccelDefPtr def) @@ -20168,6 +20477,10 @@ virDomainDefFormatInternal(virDomainDefPtr def, if (virDomainShmemDefFormat(buf, def->shmems[n], flags) < 0) goto error; + for (n = 0; n < def->nmems; n++) + if (virDomainMemoryDefFormat(buf, def->mems[n], flags) < 0) + goto error; + virBufferAdjustIndent(buf, -2); virBufferAddLit(buf, "</devices>\n"); @@ -21570,6 +21883,8 @@ virDomainDeviceDefCopy(virDomainDeviceDefPtr src, break; case VIR_DOMAIN_DEVICE_PANIC: rc = virDomainPanicDefFormat(&buf, src->data.panic); + case VIR_DOMAIN_DEVICE_MEMORY: + rc = virDomainMemoryDefFormat(&buf, src->data.memory, flags); break; case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_SMARTCARD: diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index f01c2ab..18cbe45 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -132,6 +132,9 @@ typedef virDomainIdMapDef *virDomainIdMapDefPtr; typedef struct _virDomainPanicDef virDomainPanicDef; typedef virDomainPanicDef *virDomainPanicDefPtr; +typedef struct _virDomainMemoryDef virDomainMemoryDef; +typedef virDomainMemoryDef *virDomainMemoryDefPtr; + /* forward declarations virDomainChrSourceDef, required by * virDomainNetDef */ @@ -168,6 +171,7 @@ typedef enum { VIR_DOMAIN_DEVICE_SHMEM, VIR_DOMAIN_DEVICE_TPM, VIR_DOMAIN_DEVICE_PANIC, + VIR_DOMAIN_DEVICE_MEMORY, VIR_DOMAIN_DEVICE_LAST } virDomainDeviceType; @@ -198,6 +202,7 @@ struct _virDomainDeviceDef { virDomainShmemDefPtr shmem; virDomainTPMDefPtr tpm; virDomainPanicDefPtr panic; + virDomainMemoryDefPtr memory; } data; }; @@ -1954,6 +1959,28 @@ struct _virDomainRNGDef { virDomainDeviceInfo info; }; +typedef enum { + VIR_DOMAIN_MEMORY_MODEL_NONE, + VIR_DOMAIN_MEMORY_MODEL_ACPI_DIMM, /* dimm hotpluggable memory device */ + + VIR_DOMAIN_MEMORY_MODEL_LAST +} virDomainMemoryModel; + +struct _virDomainMemoryDef { + /* source */ + virBitmapPtr sourceNodes; + unsigned long long pagesize; /* kibibytes */ + + /* target */ + int model; /* virDomainMemoryModel */ + int targetNode; + unsigned long long size; /* kibibytes */ + + virDomainDeviceInfo info; +}; + +void virDomainMemoryDefFree(virDomainMemoryDefPtr def); + struct _virDomainIdMapEntry { unsigned int start; unsigned int target; @@ -2169,6 +2196,9 @@ struct _virDomainDef { size_t nshmems; virDomainShmemDefPtr *shmems; + size_t nmems; + virDomainMemoryDefPtr *mems; + /* Only 1 */ virDomainWatchdogDefPtr watchdog; virDomainMemballoonDefPtr memballoon; @@ -2327,6 +2357,7 @@ bool virDomainObjTaint(virDomainObjPtr obj, int virDomainDefCheckUnsupportedMemoryHotplug(virDomainDefPtr def); +int virDomainDeviceDefCheckUnsupportedMemoryDevice(virDomainDeviceDefPtr dev); void virDomainPanicDefFree(virDomainPanicDefPtr panic); void virDomainResourceDefFree(virDomainResourceDefPtr resource); @@ -2860,6 +2891,8 @@ VIR_ENUM_DECL(virDomainRNGModel) VIR_ENUM_DECL(virDomainRNGBackend) VIR_ENUM_DECL(virDomainTPMModel) VIR_ENUM_DECL(virDomainTPMBackend) +VIR_ENUM_DECL(virDomainMemoryModel) +VIR_ENUM_DECL(virDomainMemoryBackingModel) /* from libvirt.h */ VIR_ENUM_DECL(virDomainState) VIR_ENUM_DECL(virDomainNostateReason) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 4bad7c6..a3d1815 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -210,6 +210,7 @@ virDomainDefPostParse; virDomainDeleteConfig; virDomainDeviceAddressIsValid; virDomainDeviceAddressTypeToString; +virDomainDeviceDefCheckUnsupportedMemoryDevice; virDomainDeviceDefCopy; virDomainDeviceDefFree; virDomainDeviceDefParse; @@ -325,6 +326,7 @@ virDomainLockFailureTypeFromString; virDomainLockFailureTypeToString; virDomainMemballoonModelTypeFromString; virDomainMemballoonModelTypeToString; +virDomainMemoryDefFree; virDomainNetAppendIpAddress; virDomainNetDefFormat; virDomainNetDefFree; diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index 01fb79c..be07807 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -534,6 +534,9 @@ libxlDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, } } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/lxc/lxc_domain.c b/src/lxc/lxc_domain.c index 1367b0c..c2180cb 100644 --- a/src/lxc/lxc_domain.c +++ b/src/lxc/lxc_domain.c @@ -113,6 +113,10 @@ virLXCDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, dev->data.chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_NONE) dev->data.chr->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_LXC; + + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index 796044a..ed6514c 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -130,6 +130,9 @@ openvzDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, return -1; } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 99c46d4..25540c4 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -1182,6 +1182,9 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, } } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + goto cleanup; + ret = 0; cleanup: diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 91fefa9..df23aaa 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -7020,6 +7020,9 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm, dev->data.chr = NULL; break; + /*TODO: implement later */ + case VIR_DOMAIN_DEVICE_MEMORY: + case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_FS: case VIR_DOMAIN_DEVICE_INPUT: @@ -7095,6 +7098,8 @@ qemuDomainDetachDeviceLive(virDomainObjPtr vm, case VIR_DOMAIN_DEVICE_CHR: ret = qemuDomainDetachChrDevice(driver, vm, dev->data.chr); break; + case VIR_DOMAIN_DEVICE_MEMORY: + /* TODO: Implement later */ case VIR_DOMAIN_DEVICE_FS: case VIR_DOMAIN_DEVICE_INPUT: case VIR_DOMAIN_DEVICE_SOUND: @@ -7213,6 +7218,7 @@ qemuDomainUpdateDeviceLive(virConnectPtr conn, case VIR_DOMAIN_DEVICE_HOSTDEV: case VIR_DOMAIN_DEVICE_CONTROLLER: case VIR_DOMAIN_DEVICE_REDIRDEV: + case VIR_DOMAIN_DEVICE_MEMORY: case VIR_DOMAIN_DEVICE_CHR: case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_TPM: @@ -7338,6 +7344,9 @@ qemuDomainAttachDeviceConfig(virQEMUCapsPtr qemuCaps, dev->data.fs = NULL; break; + case VIR_DOMAIN_DEVICE_MEMORY: + /* TODO: implement later */ + case VIR_DOMAIN_DEVICE_INPUT: case VIR_DOMAIN_DEVICE_SOUND: case VIR_DOMAIN_DEVICE_VIDEO: @@ -7454,6 +7463,9 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef, virDomainFSDefFree(fs); break; + case VIR_DOMAIN_DEVICE_MEMORY: + /* TODO: implement later */ + case VIR_DOMAIN_DEVICE_INPUT: case VIR_DOMAIN_DEVICE_SOUND: case VIR_DOMAIN_DEVICE_VIDEO: @@ -7569,6 +7581,7 @@ qemuDomainUpdateDeviceConfig(virQEMUCapsPtr qemuCaps, case VIR_DOMAIN_DEVICE_CONTROLLER: case VIR_DOMAIN_DEVICE_REDIRDEV: case VIR_DOMAIN_DEVICE_CHR: + case VIR_DOMAIN_DEVICE_MEMORY: case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_TPM: case VIR_DOMAIN_DEVICE_PANIC: diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 033b281..3a15e29 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -2911,6 +2911,9 @@ qemuDomainRemoveDevice(virQEMUDriverPtr driver, ret = qemuDomainRemoveChrDevice(driver, vm, dev->data.chr); break; + /* TODO: implement later */ + case VIR_DOMAIN_DEVICE_MEMORY: + case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_LEASE: case VIR_DOMAIN_DEVICE_FS: diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c index 546ad48..5e2a576 100644 --- a/src/uml/uml_driver.c +++ b/src/uml/uml_driver.c @@ -439,6 +439,9 @@ umlDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, return -1; } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c index f603477..1cceacb 100644 --- a/src/xen/xen_driver.c +++ b/src/xen/xen_driver.c @@ -372,6 +372,9 @@ xenDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, } } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c index 3b44a46..abc6c6f 100644 --- a/src/xenapi/xenapi_driver.c +++ b/src/xenapi/xenapi_driver.c @@ -65,6 +65,9 @@ xenapiDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, return -1; } + if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) + return -1; + return 0; } diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.xml b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.xml new file mode 100644 index 0000000..2dba8a2 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.xml @@ -0,0 +1,47 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <maxMemory slots='9' unit='KiB'>1233456789</maxMemory> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>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</emulator> + <controller type='usb' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <memballoon model='virtio'/> + <memory model='acpi-dimm'> + <target> + <size unit='KiB'>123456</size> + <node>0</node> + </target> + </memory> + <memory model='acpi-dimm'> + <source> + <pagesize unit='KiB'>4</pagesize> + </source> + <target> + <size unit='KiB'>123456</size> + <node>2</node> + </target> + </memory> + <memory model='acpi-dimm'> + <source> + <nodemask>2-5,7</nodemask> + <pagesize unit='KiB'>4</pagesize> + </source> + <target> + <size unit='KiB'>123456</size> + <node>0</node> + </target> + </memory> + </devices> +</domain> -- 2.2.2

On Fri, Jan 30, 2015 at 02:21:02PM +0100, Peter Krempa wrote: ... So, this is the host NUMA node that it is allocate from The host huge page size to use The guest memory size The guest NUMA node This isn't showing use of the <address type="acpi-dimm"> address. Is that always an output-only thing, or can apps provide that upfront like they do for other address types. All the info makes sense really. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|

When using 'acpi-dimm' memory devices with qemu, some of the information like the slot number and base address need to be reloaded from qemu after process start so that it reflects the actual state. The state then allows to use memory devices across migrations. --- src/qemu/qemu_domain.c | 43 ++++++++++++++++ src/qemu/qemu_domain.h | 4 ++ src/qemu/qemu_monitor.c | 45 +++++++++++++++++ src/qemu/qemu_monitor.h | 14 ++++++ src/qemu/qemu_monitor_json.c | 116 +++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_monitor_json.h | 5 ++ src/qemu/qemu_process.c | 4 ++ 7 files changed, 231 insertions(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 25540c4..df912a6 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -2773,6 +2773,49 @@ qemuDomainUpdateDeviceList(virQEMUDriverPtr driver, return 0; } + +int +qemuDomainUpdateMemoryDeviceInfo(virQEMUDriverPtr driver, + virDomainObjPtr vm, + int asyncJob) +{ + qemuDomainObjPrivatePtr priv = vm->privateData; + virHashTablePtr meminfo = NULL; + size_t i; + + if (vm->def->nmems == 0) + return 0; + + if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0) + return -1; + if (qemuMonitorGetMemoryDeviceInfo(priv->mon, &meminfo) < 0) { + ignore_value(qemuDomainObjExitMonitor(driver, vm)); + return -1; + } + + if (qemuDomainObjExitMonitor(driver, vm) < 0) + return -1; + + for (i = 0; i < vm->def->nmems; i++) { + virDomainMemoryDefPtr mem = vm->def->mems[i]; + qemuMonitorMemoryDeviceInfoPtr dimm; + + if (!mem->info.alias) + continue; + + if (!(dimm = virHashLookup(meminfo, mem->info.alias))) + continue; + + mem->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM; + mem->info.addr.acpiDimm.slot = dimm->slot; + mem->info.addr.acpiDimm.base = dimm->address; + } + + virHashFree(meminfo); + return 0; +} + + bool qemuDomainDefCheckABIStability(virQEMUDriverPtr driver, virDomainDefPtr src, diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index b2c3881..8caec2a 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -391,6 +391,10 @@ extern virDomainDefParserConfig virQEMUDriverDomainDefParserConfig; int qemuDomainUpdateDeviceList(virQEMUDriverPtr driver, virDomainObjPtr vm, int asyncJob); +int qemuDomainUpdateMemoryDeviceInfo(virQEMUDriverPtr driver, + virDomainObjPtr vm, + int asyncJob); + bool qemuDomainDefCheckABIStability(virQEMUDriverPtr driver, virDomainDefPtr src, virDomainDefPtr dst); diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index 6882a50..3dc5d12 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -4358,3 +4358,48 @@ void qemuMonitorIOThreadsInfoFree(qemuMonitorIOThreadsInfoPtr iothread) VIR_FREE(iothread->name); VIR_FREE(iothread); } + + +/** + * qemuMonitorGetMemoryDeviceInfo: + * @mon: pointer to the monitor + * @info: Location to return the hash of qemuMonitorMemoryDeviceInfo + * + * Retrieve state and addresses of frontend memory devices present in + * the guest. + * + * Returns 0 on success and fills @info with a newly allocated struct; if the + * data can't be retrieved due to lack of support in qemu, returns -2. On + * other errors returns -1. + */ +int +qemuMonitorGetMemoryDeviceInfo(qemuMonitorPtr mon, + virHashTablePtr *info) +{ + VIR_DEBUG("mon=%p info=%p", mon, info); + int ret; + + *info = NULL; + + if (!mon) { + virReportError(VIR_ERR_INVALID_ARG, "%s", + _("monitor must not be NULL")); + return -1; + } + + if (!mon->json) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("JSON monitor is required")); + return -2; + } + + if (!(*info = virHashCreate(10, virHashValueFree))) + return -1; + + if ((ret = qemuMonitorJSONGetMemoryDeviceInfo(mon, *info)) < 0) { + virHashFree(*info); + *info = NULL; + } + + return ret; +} diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 133d42d..811ce49 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -892,6 +892,20 @@ int qemuMonitorGetIOThreads(qemuMonitorPtr mon, void qemuMonitorIOThreadsInfoFree(qemuMonitorIOThreadsInfoPtr iothread); +typedef struct _qemuMonitorMemoryDeviceInfo qemuMonitorMemoryDeviceInfo; +typedef qemuMonitorMemoryDeviceInfo *qemuMonitorMemoryDeviceInfoPtr; + +struct _qemuMonitorMemoryDeviceInfo { + unsigned long long address; + unsigned int slot; + bool hotplugged; + bool hotpluggable; +}; + +int qemuMonitorGetMemoryDeviceInfo(qemuMonitorPtr mon, + virHashTablePtr *info) + ATTRIBUTE_NONNULL(2); + /** * When running two dd process and using <> redirection, we need a * shell that will not truncate files. These two strings serve that diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index da5c14d..333a69a 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -6569,3 +6569,119 @@ qemuMonitorJSONGetIOThreads(qemuMonitorPtr mon, virJSONValueFree(reply); return ret; } + + +int +qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon, + virHashTablePtr info) +{ + int ret = -1; + virJSONValuePtr cmd; + virJSONValuePtr reply = NULL; + virJSONValuePtr data = NULL; + qemuMonitorMemoryDeviceInfoPtr meminfo = NULL; + ssize_t n; + size_t i; + + if (!(cmd = qemuMonitorJSONMakeCommand("query-memory-devices", NULL))) + return -1; + + ret = qemuMonitorJSONCommand(mon, cmd, &reply); + + if (ret == 0) + ret = qemuMonitorJSONCheckError(cmd, reply); + + if (ret < 0) + goto cleanup; + + ret = -1; + + if (!(data = virJSONValueObjectGet(reply, "return"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("query-memory-devices reply was missing return data")); + goto cleanup; + } + + if ((n = virJSONValueArraySize(data)) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("query-memory-devices reply data was not an array")); + goto cleanup; + } + + for (i = 0; i < n; i++) { + virJSONValuePtr elem = virJSONValueArrayGet(data, i); + const char *type; + + if (!(type = virJSONValueObjectGetString(elem, "type"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("query-memory-devices reply data doesn't contain " + "enum type discriminator")); + goto cleanup; + } + + /* dimm memory devices */ + if (STREQ(type, "dimm")) { + virJSONValuePtr dimminfo; + const char *devalias; + + if (!(dimminfo = virJSONValueObjectGet(elem, "data"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("query-memory-devices reply data doesn't " + "contain enum data")); + goto cleanup; + } + + if (!(devalias = virJSONValueObjectGetString(dimminfo, "id"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("dimm memory info data is missing 'id'")); + goto cleanup; + } + + if (VIR_ALLOC(meminfo) < 0) + goto cleanup; + + if (virJSONValueObjectGetNumberUlong(dimminfo, "addr", + &meminfo->address) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing addr in dimm memory info")); + goto cleanup; + } + + if (virJSONValueObjectGetNumberUint(dimminfo, "slot", + &meminfo->slot) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing slot in dimm memory info")); + goto cleanup; + } + + if (virJSONValueObjectGetBoolean(dimminfo, "hotplugged", + &meminfo->hotplugged) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing hotplugged in dimm memory info")); + goto cleanup; + + } + + if (virJSONValueObjectGetBoolean(dimminfo, "hotpluggable", + &meminfo->hotpluggable) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed/missing hotpluggable in dimm memory info")); + goto cleanup; + + } + + if (virHashAddEntry(info, devalias, meminfo) < 0) + goto cleanup; + + meminfo = NULL; + } + } + + ret = 0; + + cleanup: + VIR_FREE(meminfo); + virJSONValueFree(cmd); + virJSONValueFree(reply); + return ret; +} diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h index 1da1a00..eb51a60 100644 --- a/src/qemu/qemu_monitor_json.h +++ b/src/qemu/qemu_monitor_json.h @@ -475,4 +475,9 @@ int qemuMonitorJSONRTCResetReinjection(qemuMonitorPtr mon); int qemuMonitorJSONGetIOThreads(qemuMonitorPtr mon, qemuMonitorIOThreadsInfoPtr **iothreads) ATTRIBUTE_NONNULL(2); + +int qemuMonitorJSONGetMemoryDeviceInfo(qemuMonitorPtr mon, + virHashTablePtr info) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2); + #endif /* QEMU_MONITOR_JSON_H */ diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index b0f7b1c..ba7c8e2 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -4871,6 +4871,10 @@ int qemuProcessStart(virConnectPtr conn, if (qemuDomainUpdateDeviceList(driver, vm, asyncJob) < 0) goto cleanup; + VIR_DEBUG("Updating info of memory devices"); + if (qemuDomainUpdateMemoryDeviceInfo(driver, vm, asyncJob) < 0) + goto cleanup; + /* Technically, qemuProcessStart can be called from inside * QEMU_ASYNC_JOB_MIGRATION_IN, but we are okay treating this like * a sync job since no other job can call into the domain until -- 2.2.2

On 01/30/2015 08:21 AM, Peter Krempa wrote: This would leak meminfo I know we don't have a "norm" for how this sequence goes, but along with Jan's point about -2 being checked back in the caller... The "norm" seems to be to: ret = qemuMonitor*(); if (*ExitMonitor) < 0) ret = -1; goto cleanup or error; if (ret < 0) goto cleanup; ... Caller would probably want to make sure the VM is still active or not. cleanup: <...snip...> Haven't looked forward yet, but is this something that needs to be done at qemuProcessReconnec ? John

Add support to start qemu instance with 'pc-dimm' device. Thanks to the refactors we are able to reuse the existing function to determine the parameters. --- src/qemu/qemu_command.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_domain.c | 18 ++++++-- src/qemu/qemu_domain.h | 2 + tests/qemuxml2xmltest.c | 1 + 4 files changed, 132 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 5820fb5..7c31723 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1156,6 +1156,10 @@ qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps) if (virAsprintf(&def->tpm->info.alias, "tpm%d", 0) < 0) return -1; } + for (i = 0; i < def->nmems; i++) { + if (virAsprintf(&def->mems[i]->info.alias, "dimm%zu", i) < 0) + return -1; + } return 0; } @@ -4748,6 +4752,97 @@ qemuBuildMemoryCellBackendStr(virDomainDefPtr def, } +static char * +qemuBuildMemoryDimmBackendStr(virDomainMemoryDefPtr mem, + virDomainDefPtr def, + virQEMUCapsPtr qemuCaps, + virQEMUDriverConfigPtr cfg) +{ + virJSONValuePtr props = NULL; + char *alias = NULL; + const char *backendType; + char *ret = NULL; + + if (!mem->info.alias) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("memory device alias is not assigned")); + return NULL; + } + + if (virAsprintf(&alias, "mem%s", mem->info.alias) < 0) + goto cleanup; + + qemuDomainMemoryDeviceAlignSize(mem); + + if (qemuBuildMemoryBackendStr(mem->size, mem->pagesize, + mem->targetNode, mem->sourceNodes, NULL, + def, qemuCaps, cfg, + &backendType, &props, true) < 0) + goto cleanup; + + ret = qemuBuildObjectCommandlineFromJSON(backendType, alias, props); + + cleanup: + VIR_FREE(alias); + virJSONValueFree(props); + + return ret; +} + + +static char * +qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem, + virQEMUCapsPtr qemuCaps) +{ + virBuffer buf = VIR_BUFFER_INITIALIZER; + + if (!mem->info.alias) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("missing alias for memory device")); + return NULL; + } + + switch ((virDomainMemoryModel) mem->model) { + case VIR_DOMAIN_MEMORY_MODEL_ACPI_DIMM: + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PC_DIMM)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("this qemu doesn't support the pc-dimm device")); + return NULL; + } + + if (mem->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM && + mem->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("only 'acpi-dimm' addresses are supported for the " + "pc-dimm device")); + return NULL; + } + + virBufferAsprintf(&buf, "pc-dimm,node=%d,memdev=mem%s,id=%s", + mem->targetNode, mem->info.alias, mem->info.alias); + + if (mem->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_ACPI_DIMM) { + virBufferAsprintf(&buf, ",slot=%d", mem->info.addr.acpiDimm.slot); + virBufferAsprintf(&buf, ",base=%llu", mem->info.addr.acpiDimm.base); + } + + break; + + case VIR_DOMAIN_MEMORY_MODEL_NONE: + case VIR_DOMAIN_MEMORY_MODEL_LAST: + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("invalid memory device type")); + break; + + } + + if (virBufferCheckError(&buf) < 0) + return NULL; + + return virBufferContentAndReset(&buf); +} + + char * qemuBuildNicStr(virDomainNetDefPtr net, const char *prefix, @@ -8351,6 +8446,25 @@ qemuBuildCommandLine(virConnectPtr conn, if (qemuBuildNumaArgStr(cfg, def, cmd, qemuCaps, nodeset) < 0) goto error; + for (i = 0; i < def->nmems; i++) { + char *backStr; + char *dimmStr; + + if (!(backStr = qemuBuildMemoryDimmBackendStr(def->mems[i], def, + qemuCaps, cfg))) + goto error; + + if (!(dimmStr = qemuBuildMemoryDeviceStr(def->mems[i], qemuCaps))) { + VIR_FREE(backStr); + goto error; + } + + virCommandAddArgList(cmd, "-object", backStr, "-device", dimmStr, NULL); + + VIR_FREE(backStr); + VIR_FREE(dimmStr); + } + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_UUID)) virCommandAddArgList(cmd, "-uuid", uuid, NULL); if (def->virtType == VIR_DOMAIN_VIRT_XEN || diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index df912a6..ff03bdc 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -1182,9 +1182,6 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev, } } - if (virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0) - goto cleanup; - ret = 0; cleanup: @@ -2878,3 +2875,18 @@ qemuDomObjEndAPI(virDomainObjPtr *vm) virObjectUnref(*vm); *vm = NULL; } + + +/** + * qemuDomainMemoryDeviceAlignSize: + * @mem: memory device definition object + * + * Aligns the size of the memory module as qemu enforces it. The size is updated + * inplace. Default rounding is now to 1 MiB (qemu requires rouding to page, + * size so this should be safe). + */ +void +qemuDomainMemoryDeviceAlignSize(virDomainMemoryDefPtr mem) +{ + mem->size = VIR_DIV_UP(mem->size, 1024) * 1024; +} diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index 8caec2a..f56aec7 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -418,4 +418,6 @@ int qemuDomainJobInfoToParams(qemuDomainJobInfoPtr jobInfo, void qemuDomObjEndAPI(virDomainObjPtr *vm); +void qemuDomainMemoryDeviceAlignSize(virDomainMemoryDefPtr mem); + #endif /* __QEMU_DOMAIN_H__ */ diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index e840d63..f9e8010 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -420,6 +420,7 @@ mymain(void) DO_TEST("memory-hotplug"); DO_TEST("memory-hotplug-nonuma"); + DO_TEST("memory-hotplug-dimm"); virObjectUnref(driver.caps); virObjectUnref(driver.xmlopt); -- 2.2.2

On Wed, Feb 04, 2015 at 17:28:00 -0500, John Ferlan wrote: ... Actually, def->cpu won't be NULL at this point as there is code that makes sure that NUMA is enabled before even letting the VM to start with memory devices so the warning should be a false positive due to a complex structure. There's a different problem though. The code is not range-checking that the memory device's guest NUMA node (passed as 'guestNode' in the code above) is actually in range of valid guest nodes. I'm going to add a check that will solve both of the problems including coverity's false positive. Thanks for the catch :). Peter

Add code to hot-add memory devices to running qemu instances. --- src/qemu/qemu_command.c | 4 +-- src/qemu/qemu_command.h | 15 +++++++++ src/qemu/qemu_driver.c | 5 ++- src/qemu/qemu_hotplug.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_hotplug.h | 3 ++ 5 files changed, 110 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 7c31723..bb55deb 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -4528,7 +4528,7 @@ qemuBuildControllerDevStr(virDomainDefPtr domainDef, * other configuration was used (to detect legacy configurations). Returns * -1 in case of an error. */ -static int +int qemuBuildMemoryBackendStr(unsigned long long size, unsigned long long pagesize, int guestNode, @@ -4790,7 +4790,7 @@ qemuBuildMemoryDimmBackendStr(virDomainMemoryDefPtr mem, } -static char * +char * qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem, virQEMUCapsPtr qemuCaps) { diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h index ae36bd8..f77c338 100644 --- a/src/qemu/qemu_command.h +++ b/src/qemu/qemu_command.h @@ -162,6 +162,21 @@ char *qemuBuildSoundDevStr(virDomainDefPtr domainDef, virDomainSoundDefPtr sound, virQEMUCapsPtr qemuCaps); +int qemuBuildMemoryBackendStr(unsigned long long size, + unsigned long long pagesize, + int guestNode, + virBitmapPtr userNodeset, + virBitmapPtr autoNodeset, + virDomainDefPtr def, + virQEMUCapsPtr qemuCaps, + virQEMUDriverConfigPtr cfg, + const char **backendType, + virJSONValuePtr *backendProps, + bool force); + +char *qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem, + virQEMUCapsPtr qemuCaps); + /* Legacy, pre device support */ char *qemuBuildPCIHostdevPCIDevStr(virDomainHostdevDefPtr dev, virQEMUCapsPtr qemuCaps); diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 48b852a..92e4b68 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -7020,8 +7020,11 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm, dev->data.chr = NULL; break; - /*TODO: implement later */ case VIR_DOMAIN_DEVICE_MEMORY: + ret = qemuDomainAttachMemory(driver, vm, + dev->data.memory); + dev->data.memory = NULL; + break; case VIR_DOMAIN_DEVICE_NONE: case VIR_DOMAIN_DEVICE_FS: diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 3a15e29..f8b427d 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1569,6 +1569,92 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver, return ret; } + +int +qemuDomainAttachMemory(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virDomainMemoryDefPtr mem) +{ + qemuDomainObjPrivatePtr priv = vm->privateData; + virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); + char *devstr = NULL; + char *objalias = NULL; + const char *backendType; + virJSONValuePtr props = NULL; + int id; + int ret = -1; + + if (virAsprintf(&mem->info.alias, "dimm%zu", vm->def->nmems) < 0) + goto cleanup; + + if (virAsprintf(&objalias, "mem%s", mem->info.alias) < 0) + goto cleanup; + + if (!(devstr = qemuBuildMemoryDeviceStr(mem, priv->qemuCaps))) + goto cleanup; + + qemuDomainMemoryDeviceAlignSize(mem); + + if (qemuBuildMemoryBackendStr(mem->size, mem->pagesize, + mem->targetNode, mem->sourceNodes, NULL, + vm->def, priv->qemuCaps, cfg, + &backendType, &props, true) < 0) + goto cleanup; + + if (virDomainMemoryInsert(vm->def, mem) < 0) { + virJSONValueFree(props); + goto cleanup; + } + + qemuDomainObjEnterMonitor(driver, vm); + if (qemuMonitorAddObject(priv->mon, backendType, objalias, props) < 0) + goto removedef; + + if (qemuMonitorAddDevice(priv->mon, devstr) < 0) { + virErrorPtr err = virSaveLastError(); + ignore_value(qemuMonitorDelObject(priv->mon, objalias)); + virSetError(err); + virFreeError(err); + goto removedef; + } + + if (qemuDomainObjExitMonitor(driver, vm) < 0) { + /* we shouldn't touch mem now, as the def might be freed */ + mem = NULL; + goto cleanup; + } + + /* mem is consumed by vm->def */ + mem = NULL; + + /* this step is best effort, removing the device would be so much trouble */ + ignore_value(qemuDomainUpdateMemoryDeviceInfo(driver, vm, + QEMU_ASYNC_JOB_NONE)); + + ret = 0; + + cleanup: + virObjectUnref(cfg); + VIR_FREE(devstr); + VIR_FREE(objalias); + virDomainMemoryDefFree(mem); + return ret; + + removedef: + if (qemuDomainObjExitMonitor(driver, vm) < 0) { + mem = NULL; + goto cleanup; + } + + if ((id = virDomainMemoryFindByDef(vm->def, mem)) >= 0) + mem = virDomainMemoryRemove(vm->def, id); + else + mem = NULL; + + goto cleanup; +} + + static int qemuDomainAttachHostUSBDevice(virQEMUDriverPtr driver, virDomainObjPtr vm, diff --git a/src/qemu/qemu_hotplug.h b/src/qemu/qemu_hotplug.h index a30788d..c14fa0b 100644 --- a/src/qemu/qemu_hotplug.h +++ b/src/qemu/qemu_hotplug.h @@ -57,6 +57,9 @@ int qemuDomainAttachHostDevice(virConnectPtr conn, virDomainHostdevDefPtr hostdev); int qemuDomainFindGraphicsIndex(virDomainDefPtr def, virDomainGraphicsDefPtr dev); +int qemuDomainAttachMemory(virQEMUDriverPtr driver, + virDomainObjPtr vm, + virDomainMemoryDefPtr mem); int qemuDomainChangeGraphics(virQEMUDriverPtr driver, virDomainObjPtr vm, virDomainGraphicsDefPtr dev); -- 2.2.2