[libvirt] [PATCH] cpu: Add support for CPU vendor

By specifying <vendor> element in CPU requirements a guest can be restricted to run only on CPUs by a given vendor. Host CPU vendor is also specified in capabilities XML. The vendor is checked when migrating a guest but it's not forced, i.e., a guest configured without <vendor> element can be freely migrated. --- Sorry for such a big patch but the bulk of it is in cpu/ which is not so easy to be splitted reasonably. docs/formatcaps.html.in | 1 + docs/formatdomain.html.in | 8 + docs/schemas/capability.rng | 5 + docs/schemas/domain.rng | 7 + src/conf/cpu_conf.c | 14 ++ src/conf/cpu_conf.h | 1 + src/cpu/cpu.c | 9 +- src/cpu/cpu.h | 6 +- src/cpu/cpu_map.c | 36 ++++-- src/cpu/cpu_map.h | 20 ++- src/cpu/cpu_map.xml | 6 + src/cpu/cpu_x86.c | 307 +++++++++++++++++++++++++++++++++++++++++-- tests/testutilsqemu.c | 1 + 13 files changed, 389 insertions(+), 32 deletions(-) diff --git a/docs/formatcaps.html.in b/docs/formatcaps.html.in index 525a331..dcbf35a 100644 --- a/docs/formatcaps.html.in +++ b/docs/formatcaps.html.in @@ -22,6 +22,7 @@ BIOS you will see</p> &lt;vmx/&gt; &lt;/features&gt; &lt;model&gt;core2duo&lt;/model&gt; + &lt;vendor&gt;Intel&lt;/vendor&gt; &lt;topology sockets="1" cores="2" threads="1"/&gt; &lt;feature name="lahf_lm"/&gt; &lt;feature name='xtpr'/&gt; diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 425a1e4..8f0cf3b 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -220,6 +220,7 @@ ... &lt;cpu match='exact'&gt; &lt;model&gt;core2duo&lt;/model&gt; + &lt;vendor&gt;Intel&lt;/vendor&gt; &lt;topology sockets='1' cores='2' threads='1'/&gt; &lt;feature policy='disable' name='lahf_lm'/&gt; &lt;/cpu&gt; @@ -267,6 +268,13 @@ definition can be found in <code>cpu_map.xml</code> file installed in libvirt's data directory.</dd> + <dt><code>vendor</code></dt> + <dd><span class="since">Since 0.8.2</span> the content of the + <code>vendor</code> element specifies CPU vendor requested by the + guest. If this element is missing, the guest can be run on a CPU + matching given features regardless on its vendor. The list of + supported vendors can be found in <code>cpu_map.xml</code>.</dd> + <dt><code>topology</code></dt> <dd>The <code>topology</code> element specifies requested topology of virtual CPU provided to the guest. Three non-zero values have to be diff --git a/docs/schemas/capability.rng b/docs/schemas/capability.rng index 67e8cf2..f894b09 100644 --- a/docs/schemas/capability.rng +++ b/docs/schemas/capability.rng @@ -79,6 +79,11 @@ <element name='model'> <text/> </element> + <optional> + <element name='vendor'> + <text/> + </element> + </optional> <element name='topology'> <attribute name='sockets'> <ref name='positiveInteger'/> diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng index fd57917..1d56f5b 100644 --- a/docs/schemas/domain.rng +++ b/docs/schemas/domain.rng @@ -1557,6 +1557,7 @@ <interleave> <ref name="cpuModel"/> <optional> + <ref name="cpuVendor"/> <ref name="cpuTopology"/> </optional> <zeroOrMore> @@ -1584,6 +1585,12 @@ </element> </define> + <define name="cpuVendor"> + <element name="vendor"> + <text/> + </element> + </define> + <define name="cpuFeature"> <element name="feature"> <attribute name="policy"> diff --git a/src/conf/cpu_conf.c b/src/conf/cpu_conf.c index c51ac4e..d9aa69c 100644 --- a/src/conf/cpu_conf.c +++ b/src/conf/cpu_conf.c @@ -58,6 +58,7 @@ virCPUDefFree(virCPUDefPtr def) VIR_FREE(def->model); VIR_FREE(def->arch); + VIR_FREE(def->vendor); for (i = 0 ; i < def->nfeatures ; i++) VIR_FREE(def->features[i].name); @@ -79,6 +80,7 @@ virCPUDefCopy(const virCPUDefPtr cpu) if (VIR_ALLOC(copy) < 0 || (cpu->arch && !(copy->arch = strdup(cpu->arch))) || (cpu->model && !(copy->model = strdup(cpu->model))) + || (cpu->vendor && !(copy->vendor = strdup(cpu->vendor))) || VIR_ALLOC_N(copy->features, cpu->nfeatures) < 0) goto no_memory; @@ -173,6 +175,13 @@ virCPUDefParseXML(const xmlNodePtr node, goto error; } + def->vendor = virXPathString("string(./vendor[1])", ctxt); + if (def->vendor && !def->model) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("CPU vendor specified without CPU model")); + goto error; + } + if (virXPathNode("./topology[1]", ctxt)) { int ret; unsigned long ul; @@ -349,6 +358,11 @@ virCPUDefFormatBuf(virBufferPtr buf, if (def->model) virBufferVSprintf(buf, "%s <model>%s</model>\n", indent, def->model); + if (def->vendor) { + virBufferVSprintf(buf, "%s <vendor>%s</vendor>\n", + indent, def->vendor); + } + if (def->sockets && def->cores && def->threads) { virBufferVSprintf(buf, "%s <topology", indent); virBufferVSprintf(buf, " sockets='%u'", def->sockets); diff --git a/src/conf/cpu_conf.h b/src/conf/cpu_conf.h index a30991d..1c29192 100644 --- a/src/conf/cpu_conf.h +++ b/src/conf/cpu_conf.h @@ -72,6 +72,7 @@ struct _virCPUDef { int match; /* enum virCPUMatch */ char *arch; char *model; + char *vendor; unsigned int sockets; unsigned int cores; unsigned int threads; diff --git a/src/cpu/cpu.c b/src/cpu/cpu.c index 8d6c22b..279eee7 100644 --- a/src/cpu/cpu.c +++ b/src/cpu/cpu.c @@ -173,14 +173,15 @@ cpuEncode(const char *arch, union cpuData **required, union cpuData **optional, union cpuData **disabled, - union cpuData **forbidden) + union cpuData **forbidden, + union cpuData **vendor) { struct cpuArchDriver *driver; VIR_DEBUG("arch=%s, cpu=%p, forced=%p, required=%p, " - "optional=%p, disabled=%p, forbidden=%p", + "optional=%p, disabled=%p, forbidden=%p, vendor=%p", NULLSTR(arch), cpu, forced, required, - optional, disabled, forbidden); + optional, disabled, forbidden, vendor); if ((driver = cpuGetSubDriver(arch)) == NULL) return -1; @@ -193,7 +194,7 @@ cpuEncode(const char *arch, } return driver->encode(cpu, forced, required, - optional, disabled, forbidden); + optional, disabled, forbidden, vendor); } diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h index 40f2a7d..a745917 100644 --- a/src/cpu/cpu.h +++ b/src/cpu/cpu.h @@ -58,7 +58,8 @@ typedef int union cpuData **required, union cpuData **optional, union cpuData **disabled, - union cpuData **forbidden); + union cpuData **forbidden, + union cpuData **vendor); typedef void (*cpuArchDataFree) (union cpuData *data); @@ -119,7 +120,8 @@ cpuEncode (const char *arch, union cpuData **required, union cpuData **optional, union cpuData **disabled, - union cpuData **forbidden); + union cpuData **forbidden, + union cpuData **vendor); extern void cpuDataFree (const char *arch, diff --git a/src/cpu/cpu_map.c b/src/cpu/cpu_map.c index 5fb88e0..263bb9e 100644 --- a/src/cpu/cpu_map.c +++ b/src/cpu/cpu_map.c @@ -32,9 +32,14 @@ #define CPUMAPFILE PKGDATADIR "/cpu_map.xml" +VIR_ENUM_IMPL(cpuMapElement, CPU_MAP_ELEMENT_LAST, + "vendor", + "feature", + "model") + static int load(xmlXPathContextPtr ctxt, - const char *node, + enum cpuMapElement element, cpuMapLoadCallback callback, void *data) { @@ -47,9 +52,10 @@ static int load(xmlXPathContextPtr ctxt, cur = ctxt_node->children; while (cur != NULL) { if (cur->type == XML_ELEMENT_NODE && - xmlStrEqual(cur->name, BAD_CAST node)) { + xmlStrEqual(cur->name, + BAD_CAST cpuMapElementTypeToString(element))) { ctxt->node = cur; - if (callback(ctxt, data) < 0) + if (callback(element, ctxt, data) < 0) goto cleanup; } @@ -66,16 +72,15 @@ cleanup: int cpuMapLoad(const char *arch, - cpuMapLoadCallback feature_cb, - void *model_data, - cpuMapLoadCallback model_cb, - void *feature_data) + cpuMapLoadCallback cb, + void *data) { xmlDocPtr xml = NULL; xmlXPathContextPtr ctxt = NULL; virBuffer buf = VIR_BUFFER_INITIALIZER; char *xpath = NULL; int ret = -1; + int element; if (arch == NULL) { virCPUReportError(VIR_ERR_INTERNAL_ERROR, @@ -83,6 +88,12 @@ int cpuMapLoad(const char *arch, return -1; } + if (cb == NULL) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("no callback provided")); + return -1; + } + if ((xml = xmlParseFile(CPUMAPFILE)) == NULL) { virCPUReportError(VIR_ERR_INTERNAL_ERROR, _("cannot parse CPU map file: %s"), @@ -107,11 +118,12 @@ int cpuMapLoad(const char *arch, goto cleanup; } - if ((feature_cb && load(ctxt, "feature", feature_cb, feature_data) < 0) || - (model_cb && load(ctxt, "model", model_cb, model_data) < 0)) { - virCPUReportError(VIR_ERR_INTERNAL_ERROR, - _("cannot parse CPU map for %s architecture"), arch); - goto cleanup; + for (element = 0; element < CPU_MAP_ELEMENT_LAST; element++) { + if (load(ctxt, element, cb, data) < 0) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + _("cannot parse CPU map for %s architecture"), arch); + goto cleanup; + } } ret = 0; diff --git a/src/cpu/cpu_map.h b/src/cpu/cpu_map.h index 3d72c7f..e26c7c1 100644 --- a/src/cpu/cpu_map.h +++ b/src/cpu/cpu_map.h @@ -27,15 +27,25 @@ # include "xml.h" +enum cpuMapElement { + CPU_MAP_ELEMENT_VENDOR, + CPU_MAP_ELEMENT_FEATURE, + CPU_MAP_ELEMENT_MODEL, + + CPU_MAP_ELEMENT_LAST +}; + +VIR_ENUM_DECL(cpuMapElement) + + typedef int -(*cpuMapLoadCallback) (xmlXPathContextPtr ctxt, +(*cpuMapLoadCallback) (enum cpuMapElement element, + xmlXPathContextPtr ctxt, void *data); extern int cpuMapLoad(const char *arch, - cpuMapLoadCallback feature_cb, - void *model_data, - cpuMapLoadCallback model_cb, - void *feature_data); + cpuMapLoadCallback cb, + void *data); #endif /* __VIR_CPU_MAP_H__ */ diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml index 084b879..3ec4a7e 100644 --- a/src/cpu/cpu_map.xml +++ b/src/cpu/cpu_map.xml @@ -1,5 +1,9 @@ <cpus> <arch name='x86'> + <!-- vendor definitions --> + <vendor name='Intel' string='GenuineIntel'/> + <vendor name='AMD' string='AuthenticAMD'/> + <!-- standard features, EDX --> <feature name='fpu'> <!-- CPUID_FP87 --> <cpuid function='0x00000001' edx='0x00000001'/> @@ -310,6 +314,7 @@ <model name='phenom'> <model name='pentiumpro'/> + <vendor name='AMD'/> <feature name='mtrr'/> <feature name='clflush'/> <feature name='mca'/> @@ -328,6 +333,7 @@ <model name='athlon'> <model name='pentiumpro'/> + <vendor name='AMD'/> <feature name='pse36'/> <feature name='vme'/> <feature name='mtrr'/> diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c index 0266ce9..114235c 100644 --- a/src/cpu/cpu_x86.c +++ b/src/cpu/cpu_x86.c @@ -35,8 +35,18 @@ #define VIR_FROM_THIS VIR_FROM_CPU +#define VENDOR_STRING_LENGTH 12 + + static const char *archs[] = { "i686", "x86_64" }; +struct x86_vendor { + char *name; + struct cpuX86cpuid cpuid; + + struct x86_vendor *next; +}; + struct x86_feature { char *name; unsigned int ncpuid; @@ -47,6 +57,7 @@ struct x86_feature { struct x86_model { char *name; + const struct x86_vendor *vendor; unsigned int ncpuid; struct cpuX86cpuid *cpuid; @@ -54,6 +65,7 @@ struct x86_model { }; struct x86_map { + struct x86_vendor *vendors; struct x86_feature *features; struct x86_model *models; }; @@ -212,6 +224,44 @@ x86DataCopy(const union cpuData *data) } +static int +x86DataAddCpuid(union cpuData *data, + const struct cpuX86cpuid *cpuid) +{ + struct cpuX86cpuid **cpuids; + int *len; + unsigned int pos; + unsigned int ext; + + if (cpuid->function < CPUX86_EXTENDED) { + pos = cpuid->function; + ext = 0; + len = &data->x86.basic_len; + cpuids = &data->x86.basic; + } else { + pos = cpuid->function - CPUX86_EXTENDED; + ext = CPUX86_EXTENDED; + len = &data->x86.extended_len; + cpuids = &data->x86.extended; + } + + if (pos >= *len) { + unsigned int i; + + if (VIR_ALLOC_N(*cpuids, pos + 1) < 0) + return -1; + + for (i = *len; i <= pos; i++) + (*cpuids)[i].function = i + ext; + *len = pos + 1; + } + + x86cpuidSetBits((*cpuids) + pos, cpuid); + + return 0; +} + + static void x86DataSubtract(union cpuData *data1, const union cpuData *data2) @@ -318,6 +368,27 @@ x86DataToCPUFeatures(virCPUDefPtr cpu, } +/* also removes bits corresponding to vendor string from data */ +static const struct x86_vendor * +x86DataToVendor(union cpuData *data, + const struct x86_map *map) +{ + const struct x86_vendor *vendor = map->vendors; + struct cpuX86cpuid *cpuid; + + while (vendor) { + if ((cpuid = x86DataCpuid(data, vendor->cpuid.function)) && + x86cpuidMatchMasked(cpuid, &vendor->cpuid)) { + x86cpuidClearBits(cpuid, &vendor->cpuid); + return vendor; + } + vendor = vendor->next; + } + + return NULL; +} + + static virCPUDefPtr x86DataToCPU(const union cpuData *data, const struct x86_model *model, @@ -326,6 +397,7 @@ x86DataToCPU(const union cpuData *data, virCPUDefPtr cpu; union cpuData *copy = NULL; union cpuData *modelData = NULL; + const struct x86_vendor *vendor; if (VIR_ALLOC(cpu) < 0 || !(cpu->model = strdup(model->name)) || @@ -333,6 +405,10 @@ x86DataToCPU(const union cpuData *data, !(modelData = x86DataFromModel(model))) goto no_memory; + if ((vendor = x86DataToVendor(copy, map)) && + !(cpu->vendor = strdup(vendor->name))) + goto no_memory; + x86DataSubtract(copy, modelData); x86DataSubtract(modelData, data); @@ -358,6 +434,106 @@ error: static void +x86VendorFree(struct x86_vendor *vendor) +{ + if (!vendor) + return; + + VIR_FREE(vendor->name); + VIR_FREE(vendor); +}; + + +static struct x86_vendor * +x86VendorFind(const struct x86_map *map, + const char *name) +{ + struct x86_vendor *vendor; + + vendor = map->vendors; + while (vendor) { + if (STREQ(vendor->name, name)) + return vendor; + + vendor = vendor->next; + } + + return NULL; +} + + +static int +x86VendorLoad(xmlXPathContextPtr ctxt, + struct x86_map *map) +{ + struct x86_vendor *vendor = NULL; + char *string = NULL; + int ret = 0; + + if (VIR_ALLOC(vendor) < 0) + goto no_memory; + + vendor->name = virXPathString("string(@name)", ctxt); + if (!vendor->name) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("Missing CPU vendor name")); + goto ignore; + } + + if (x86VendorFind(map, vendor->name)) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + _("CPU vendor %s already defined"), vendor->name); + goto ignore; + } + + string = virXPathString("string(@string)", ctxt); + if (!string) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + _("Missing vendor string for CPU vendor %s"), vendor->name); + goto ignore; + } + if (strlen(string) != VENDOR_STRING_LENGTH) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + _("Invalid CPU vendor string '%s'"), string); + goto ignore; + } + + vendor->cpuid.function = 0; + vendor->cpuid.ebx = (string[0] ) | + (string[1] << 8) | + (string[2] << 16) | + (string[3] << 24); + vendor->cpuid.edx = (string[4] ) | + (string[5] << 8) | + (string[6] << 16) | + (string[7] << 24); + vendor->cpuid.ecx = (string[8] ) | + (string[9] << 8) | + (string[10] << 16) | + (string[11] << 24); + + if (!map->vendors) + map->vendors = vendor; + else { + vendor->next = map->vendors; + map->vendors = vendor; + } + +out: + VIR_FREE(string); + + return ret; + +no_memory: + virReportOOMError(); + ret = -1; +ignore: + x86VendorFree(vendor); + goto out; +} + + +static void x86FeatureFree(struct x86_feature *feature) { if (feature == NULL) @@ -389,9 +565,8 @@ x86FeatureFind(const struct x86_map *map, static int x86FeatureLoad(xmlXPathContextPtr ctxt, - void *data) + struct x86_map *map) { - struct x86_map *map = data; xmlNodePtr *nodes = NULL; xmlNodePtr ctxt_node = ctxt->node; struct x86_feature *feature = NULL; @@ -500,6 +675,7 @@ x86ModelCopy(const struct x86_model *model) return NULL; } + copy->vendor = model->vendor; copy->ncpuid = model->ncpuid; for (i = 0; i < model->ncpuid; i++) copy->cpuid[i] = model->cpuid[i]; @@ -788,11 +964,11 @@ x86ModelCompare(const struct x86_model *model1, static int x86ModelLoad(xmlXPathContextPtr ctxt, - void *data) + struct x86_map *map) { - struct x86_map *map = data; xmlNodePtr *nodes = NULL; struct x86_model *model = NULL; + char *vendor = NULL; int ret = 0; int i; int n; @@ -832,11 +1008,22 @@ x86ModelLoad(xmlXPathContextPtr ctxt, if (VIR_ALLOC_N(model->cpuid, ancestor->ncpuid) < 0) goto no_memory; + model->vendor = ancestor->vendor; model->ncpuid = ancestor->ncpuid; memcpy(model->cpuid, ancestor->cpuid, sizeof(*model->cpuid) * model->ncpuid); } + vendor = virXPathString("string(./vendor/@name)", ctxt); + if (vendor) { + if (!(model->vendor = x86VendorFind(map, vendor))) { + virCPUReportError(VIR_ERR_INTERNAL_ERROR, + _("Unknown vendor %s referenced by CPU model %s"), + vendor, model->name); + goto ignore; + } + } + n = virXPathNodeSet("./feature", ctxt, &nodes); if (n < 0) goto ignore; @@ -872,6 +1059,7 @@ x86ModelLoad(xmlXPathContextPtr ctxt, } out: + VIR_FREE(vendor); VIR_FREE(nodes); return ret; @@ -907,6 +1095,28 @@ x86MapFree(struct x86_map *map) } +static int +x86MapLoadCallback(enum cpuMapElement element, + xmlXPathContextPtr ctxt, + void *data) +{ + struct x86_map *map = data; + + switch (element) { + case CPU_MAP_ELEMENT_VENDOR: + return x86VendorLoad(ctxt, map); + case CPU_MAP_ELEMENT_FEATURE: + return x86FeatureLoad(ctxt, map); + case CPU_MAP_ELEMENT_MODEL: + return x86ModelLoad(ctxt, map); + case CPU_MAP_ELEMENT_LAST: + break; + } + + return 0; +} + + static struct x86_map * x86LoadMap(void) { @@ -917,9 +1127,7 @@ x86LoadMap(void) return NULL; } - if (cpuMapLoad("x86", - x86FeatureLoad, map, - x86ModelLoad, map) < 0) + if (cpuMapLoad("x86", x86MapLoadCallback, map) < 0) goto error; return map; @@ -965,6 +1173,13 @@ x86Compute(virCPUDefPtr host, } } + if (cpu->vendor && + (!host->vendor || STRNEQ(cpu->vendor, host->vendor))) { + VIR_DEBUG("host CPU vendor does not match required CPU vendor %s", + cpu->vendor); + return VIR_CPU_COMPARE_INCOMPATIBLE; + } + if (!(map = x86LoadMap()) || !(host_model = x86ModelFromCPU(host, map, 0)) || !(cpu_force = x86ModelFromCPU(cpu, map, VIR_CPU_FEATURE_FORCE)) || @@ -1117,6 +1332,15 @@ x86Decode(virCPUDefPtr cpu, if (!(cpuCandidate = x86DataToCPU(data, candidate, map))) goto out; + if (candidate->vendor && cpuCandidate->vendor && + STRNEQ(candidate->vendor->name, cpuCandidate->vendor)) { + VIR_DEBUG("CPU vendor %s of model %s differs from %s; ignoring", + candidate->vendor->name, candidate->name, + cpuCandidate->vendor); + virCPUDefFree(cpuCandidate); + goto next; + } + if (cpu->type == VIR_CPU_TYPE_HOST) { cpuCandidate->type = VIR_CPU_TYPE_HOST; for (i = 0; i < cpuCandidate->nfeatures; i++) { @@ -1154,6 +1378,7 @@ x86Decode(virCPUDefPtr cpu, } cpu->model = cpuModel->model; + cpu->vendor = cpuModel->vendor; cpu->nfeatures = cpuModel->nfeatures; cpu->features = cpuModel->features; VIR_FREE(cpuModel); @@ -1194,7 +1419,8 @@ x86Encode(const virCPUDefPtr cpu, union cpuData **required, union cpuData **optional, union cpuData **disabled, - union cpuData **forbidden) + union cpuData **forbidden, + union cpuData **vendor) { struct x86_map *map = NULL; union cpuData *data_forced = NULL; @@ -1202,6 +1428,7 @@ x86Encode(const virCPUDefPtr cpu, union cpuData *data_optional = NULL; union cpuData *data_disabled = NULL; union cpuData *data_forbidden = NULL; + union cpuData *data_vendor = NULL; int ret = -1; if ((map = x86LoadMap()) == NULL) @@ -1237,6 +1464,23 @@ x86Encode(const virCPUDefPtr cpu, goto error; } + if (vendor) { + const struct x86_vendor *v = NULL; + + if (cpu->vendor && !(v = x86VendorFind(map, cpu->vendor))) { + virCPUReportError(VIR_ERR_OPERATION_FAILED, + _("CPU vendor %s not found"), cpu->vendor); + goto error; + } + + if (v && + (VIR_ALLOC(data_vendor) < 0 || + x86DataAddCpuid(data_vendor, &v->cpuid) < 0)) { + virReportOOMError(); + goto error; + } + } + if (forced) *forced = data_forced; if (required) @@ -1247,6 +1491,8 @@ x86Encode(const virCPUDefPtr cpu, *disabled = data_disabled; if (forbidden) *forbidden = data_forbidden; + if (vendor) + *vendor = data_vendor; ret = 0; @@ -1261,6 +1507,7 @@ error: x86DataFree(data_optional); x86DataFree(data_disabled); x86DataFree(data_forbidden); + x86DataFree(data_vendor); goto cleanup; } @@ -1358,6 +1605,8 @@ x86Baseline(virCPUDefPtr *cpus, union cpuData *data = NULL; virCPUDefPtr cpu = NULL; unsigned int i; + const struct x86_vendor *vendor = NULL; + struct x86_model *model = NULL; if (!(map = x86LoadMap())) goto error; @@ -1371,13 +1620,49 @@ x86Baseline(virCPUDefPtr *cpus, cpu->type = VIR_CPU_TYPE_GUEST; cpu->match = VIR_CPU_MATCH_EXACT; + if (cpus[0]->vendor && + !(vendor = x86VendorFind(map, cpus[0]->vendor))) { + virCPUReportError(VIR_ERR_OPERATION_FAILED, + _("Unknown CPU vendor %s"), cpus[0]->vendor); + goto error; + } + for (i = 1; i < ncpus; i++) { - struct x86_model *model; + const char *vn = NULL; + if (!(model = x86ModelFromCPU(cpus[i], map, 0))) goto error; + if (cpus[i]->vendor && model->vendor && + STRNEQ(cpus[i]->vendor, model->vendor->name)) { + virCPUReportError(VIR_ERR_OPERATION_FAILED, + _("CPU vendor %s of model %s differs from vendor %s"), + model->vendor->name, model->name, cpus[i]->vendor); + goto error; + } + + if (cpus[i]->vendor) + vn = cpus[i]->vendor; + else if (model->vendor) + vn = model->vendor->name; + + if (vn) { + if (!vendor) { + if (!(vendor = x86VendorFind(map, vn))) { + virCPUReportError(VIR_ERR_OPERATION_FAILED, + _("Unknown CPU vendor %s"), vn); + goto error; + } + } else if (STRNEQ(vendor->name, vn)) { + virCPUReportError(VIR_ERR_OPERATION_FAILED, + "%s", _("CPU vendors do not match")); + goto error; + } + } + x86ModelIntersect(base_model, model); x86ModelFree(model); + model = NULL; } if (!(data = x86DataFromModel(base_model))) @@ -1389,6 +1674,9 @@ x86Baseline(virCPUDefPtr *cpus, goto error; } + if (vendor && x86DataAddCpuid(data, &vendor->cpuid) < 0) + goto no_memory; + if (x86Decode(cpu, data, models, nmodels, NULL) < 0) goto error; @@ -1404,6 +1692,7 @@ cleanup: no_memory: virReportOOMError(); error: + x86ModelFree(model); virCPUDefFree(cpu); cpu = NULL; goto cleanup; diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c index 7fee21a..99b1f4e 100644 --- a/tests/testutilsqemu.c +++ b/tests/testutilsqemu.c @@ -83,6 +83,7 @@ virCapsPtr testQemuCapsInit(void) { 0, /* match */ (char *) "x86_64", /* arch */ (char *) "core2duo", /* model */ + (char *) "Intel", /* vendor */ 1, /* sockets */ 2, /* cores */ 1, /* threads */ -- 1.7.1.1