virCPUDefPtr
cpuBaseline(virCPUDefPtr *cpus,
unsigned int ncpus,
const char **models,
unsigned int nmodels)
{
struct cpuArchDriver *driver;
unsigned int i;
VIR_DEBUG("ncpus=%u, nmodels=%u", ncpus, nmodels);
if (cpus) {
for (i = 0; i < ncpus; i++)
VIR_DEBUG("cpus[%u]=%p", i, cpus[i]);
}
if (models) {
for (i = 0; i < nmodels; i++)
VIR_DEBUG("models[%u]=%s", i, NULLSTR(models[i]));
}
if (cpus == NULL && ncpus != 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("nonzero ncpus doesn't match with NULL cpus"));
return NULL;
}
if (ncpus < 1) {
virCPUReportError(VIR_ERR_INVALID_ARG, "%s", _("No CPUs given"));
return NULL;
}
if (models == NULL && nmodels != 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("nonzero nmodels doesn't match with NULL models"));
return NULL;
}
if ((driver = cpuGetSubDriver(cpus[0]->arch)) == NULL)
return NULL;
if (driver->baseline == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot compute baseline CPU of %s architecture"),
cpus[0]->arch);
return NULL;
}
return driver->baseline(cpus, ncpus, models, nmodels);
}
int
virCPUDefAddFeature(virCPUDefPtr def,
const char *name,
int policy)
{
int i;
for (i = 0 ; i < def->nfeatures ; i++) {
if (STREQ(name, def->features[i].name)) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU feature `%s' specified more than once"), name);
return -1;
}
}
if (VIR_RESIZE_N(def->features, def->nfeatures_max,
def->nfeatures, 1) < 0)
goto no_memory;
if (def->type == VIR_CPU_TYPE_HOST)
policy = -1;
if (!(def->features[def->nfeatures].name = strdup(name)))
goto no_memory;
def->features[def->nfeatures].policy = policy;
def->nfeatures++;
return 0;
no_memory:
virReportOOMError();
return -1;
}
int
cpuEncode(const char *arch,
const virCPUDefPtr cpu,
union cpuData **forced,
union cpuData **required,
union cpuData **optional,
union cpuData **disabled,
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, vendor=%p",
NULLSTR(arch), cpu, forced, required,
optional, disabled, forbidden, vendor);
if ((driver = cpuGetSubDriver(arch)) == NULL)
return -1;
if (driver->encode == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot encode CPU data for %s architecture"),
arch);
return -1;
}
return driver->encode(cpu, forced, required,
optional, disabled, forbidden, vendor);
}
virCPUCompareResult
cpuCompareXML(virCPUDefPtr host,
const char *xml)
{
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
virCPUDefPtr cpu = NULL;
virCPUCompareResult ret = VIR_CPU_COMPARE_ERROR;
VIR_DEBUG("host=%p, xml=%s", host, NULLSTR(xml));
if (!(doc = virXMLParseStringCtxt(xml, _("(CPU_definition)"), &ctxt)))
goto cleanup;
cpu = virCPUDefParseXML(ctxt->node, ctxt, VIR_CPU_TYPE_AUTO);
if (cpu == NULL)
goto cleanup;
if (!cpu->model) {
virCPUReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("no CPU model specified"));
goto cleanup;
}
ret = cpuCompare(host, cpu);
cleanup:
virCPUDefFree(cpu);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return ret;
}
int
virCPUDefFormatBufFull(virBufferPtr buf,
virCPUDefPtr def,
unsigned int flags)
{
if (!def)
return 0;
virBufferAddLit(buf, "<cpu");
if (def->type == VIR_CPU_TYPE_GUEST) {
const char *tmp;
if (def->mode != VIR_CPU_MODE_CUSTOM || def->model) {
if (!(tmp = virCPUModeTypeToString(def->mode))) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU mode %d"), def->mode);
return -1;
}
virBufferAsprintf(buf, " mode='%s'", tmp);
}
if (def->model &&
(def->mode == VIR_CPU_MODE_CUSTOM ||
(flags & VIR_DOMAIN_XML_UPDATE_CPU))) {
if (!(tmp = virCPUMatchTypeToString(def->match))) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU match policy %d"),
def->match);
return -1;
}
virBufferAsprintf(buf, " match='%s'", tmp);
}
}
virBufferAddLit(buf, ">\n");
if (def->arch)
virBufferAsprintf(buf, " <arch>%s</arch>\n", def->arch);
virBufferAdjustIndent(buf, 2);
if (virCPUDefFormatBuf(buf, def, flags) < 0)
return -1;
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</cpu>\n");
return 0;
}
int
cpuDecode(virCPUDefPtr cpu,
const union cpuData *data,
const char **models,
unsigned int nmodels,
const char *preferred)
{
struct cpuArchDriver *driver;
VIR_DEBUG("cpu=%p, data=%p, nmodels=%u, preferred=%s",
cpu, data, nmodels, NULLSTR(preferred));
if (models) {
unsigned int i;
for (i = 0; i < nmodels; i++)
VIR_DEBUG("models[%u]=%s", i, NULLSTR(models[i]));
}
if (models == NULL && nmodels != 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("nonzero nmodels doesn't match with NULL models"));
return -1;
}
if (cpu == NULL) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("invalid CPU definition"));
return -1;
}
if ((driver = cpuGetSubDriver(cpu->arch)) == NULL)
return -1;
if (driver->decode == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot decode CPU data for %s architecture"),
cpu->arch);
return -1;
}
return driver->decode(cpu, data, models, nmodels, preferred);
}
union cpuData *
cpuNodeData(const char *arch)
{
struct cpuArchDriver *driver;
VIR_DEBUG("arch=%s", NULLSTR(arch));
if ((driver = cpuGetSubDriver(arch)) == NULL)
return NULL;
if (driver->nodeData == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot get node CPU data for %s architecture"),
arch);
return NULL;
}
return driver->nodeData();
}
int
cpuUpdate(virCPUDefPtr guest,
const virCPUDefPtr host)
{
struct cpuArchDriver *driver;
VIR_DEBUG("guest=%p, host=%p", guest, host);
if ((driver = cpuGetSubDriver(host->arch)) == NULL)
return -1;
if (driver->update == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot update guest CPU data for %s architecture"),
host->arch);
return -1;
}
return driver->update(guest, host);
}
virCPUCompareResult
cpuCompare(virCPUDefPtr host,
virCPUDefPtr cpu)
{
struct cpuArchDriver *driver;
VIR_DEBUG("host=%p, cpu=%p", host, cpu);
if ((driver = cpuGetSubDriver(host->arch)) == NULL)
return VIR_CPU_COMPARE_ERROR;
if (driver->compare == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot compare CPUs of %s architecture"),
host->arch);
return VIR_CPU_COMPARE_ERROR;
}
return driver->compare(host, cpu);
}
virCPUCompareResult
cpuGuestData(virCPUDefPtr host,
virCPUDefPtr guest,
union cpuData **data)
{
struct cpuArchDriver *driver;
VIR_DEBUG("host=%p, guest=%p, data=%p", host, guest, data);
if ((driver = cpuGetSubDriver(host->arch)) == NULL)
return VIR_CPU_COMPARE_ERROR;
if (driver->guestData == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot compute guest CPU data for %s architecture"),
host->arch);
return VIR_CPU_COMPARE_ERROR;
}
return driver->guestData(host, guest, data);
}
static struct cpuArchDriver *
cpuGetSubDriver(const char *arch)
{
unsigned int i;
unsigned int j;
if (arch == NULL) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("undefined hardware architecture"));
return NULL;
}
for (i = 0; i < NR_DRIVERS - 1; i++) {
for (j = 0; j < drivers[i]->narch; j++) {
if (STREQ(arch, drivers[i]->arch[j]))
return drivers[i];
}
}
/* use generic driver by default */
return drivers[NR_DRIVERS - 1];
}
int
cpuHasFeature(const char *arch,
const union cpuData *data,
const char *feature)
{
struct cpuArchDriver *driver;
VIR_DEBUG("arch=%s, data=%p, feature=%s",
arch, data, feature);
if ((driver = cpuGetSubDriver(arch)) == NULL)
return -1;
if (driver->hasFeature == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot check guest CPU data for %s architecture"),
arch);
return -1;
}
return driver->hasFeature(data, feature);
}
void
cpuDataFree(const char *arch,
union cpuData *data)
{
struct cpuArchDriver *driver;
VIR_DEBUG("arch=%s, data=%p", NULLSTR(arch), data);
if (data == NULL)
return;
if ((driver = cpuGetSubDriver(arch)) == NULL)
return;
if (driver->free == NULL) {
virCPUReportError(VIR_ERR_NO_SUPPORT,
_("cannot free CPU data for %s architecture"),
arch);
return;
}
(driver->free)(data);
}
static virCPUDefPtr
genericBaseline(virCPUDefPtr *cpus,
unsigned int ncpus,
const char **models,
unsigned int nmodels)
{
virCPUDefPtr cpu = NULL;
virCPUFeatureDefPtr features = NULL;
unsigned int nfeatures;
unsigned int count;
unsigned int i, j;
if (models) {
bool found = false;
for (i = 0; i < nmodels; i++) {
if (STREQ(cpus[0]->model, models[i])) {
found = true;
break;
}
}
if (!found) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU model '%s' is not support by hypervisor"),
cpus[0]->model);
goto error;
}
}
if (VIR_ALLOC(cpu) < 0 ||
!(cpu->arch = strdup(cpus[0]->arch)) ||
!(cpu->model = strdup(cpus[0]->model)) ||
VIR_ALLOC_N(features, cpus[0]->nfeatures) < 0)
goto no_memory;
cpu->type = VIR_CPU_TYPE_HOST;
count = nfeatures = cpus[0]->nfeatures;
for (i = 0; i < nfeatures; i++)
features[i].name = cpus[0]->features[i].name;
for (i = 1; i < ncpus; i++) {
virHashTablePtr hash;
if (STRNEQ(cpu->arch, cpus[i]->arch)) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPUs have incompatible architectures: '%s' != '%s'"),
cpu->arch, cpus[i]->arch);
goto error;
}
if (STRNEQ(cpu->model, cpus[i]->model)) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU models don't match: '%s' != '%s'"),
cpu->model, cpus[i]->model);
goto error;
}
if (!(hash = genericHashFeatures(cpus[i])))
goto no_memory;
for (j = 0; j < nfeatures; j++) {
if (features[j].name &&
!virHashLookup(hash, features[j].name)) {
features[j].name = NULL;
count--;
}
}
virHashFree(hash);
}
if (VIR_ALLOC_N(cpu->features, count) < 0)
goto no_memory;
cpu->nfeatures = count;
j = 0;
for (i = 0; i < nfeatures; i++) {
if (!features[i].name)
continue;
if (!(cpu->features[j++].name = strdup(features[i].name)))
goto no_memory;
}
cleanup:
VIR_FREE(features);
return cpu;
no_memory:
virReportOOMError();
error:
virCPUDefFree(cpu);
cpu = NULL;
goto cleanup;
}
virCPUDefPtr
virCPUDefParseXML(const xmlNodePtr node,
xmlXPathContextPtr ctxt,
enum virCPUType mode)
{
virCPUDefPtr def;
xmlNodePtr *nodes = NULL;
int n;
unsigned int i;
if (!xmlStrEqual(node->name, BAD_CAST "cpu")) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s",
_("XML does not contain expected 'cpu' element"));
return NULL;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
return NULL;
}
if (mode == VIR_CPU_TYPE_AUTO) {
if (virXPathBoolean("boolean(./arch)", ctxt)) {
if (virXPathBoolean("boolean(./@match)", ctxt)) {
virCPUReportError(VIR_ERR_XML_ERROR, "%s",
_("'arch' element element cannot be used inside 'cpu'"
" element with 'match' attribute'"));
goto error;
}
def->type = VIR_CPU_TYPE_HOST;
} else
def->type = VIR_CPU_TYPE_GUEST;
} else
def->type = mode;
if (def->type == VIR_CPU_TYPE_GUEST) {
char *match = virXMLPropString(node, "match");
if (!match) {
if (virXPathBoolean("boolean(./model)", ctxt))
def->match = VIR_CPU_MATCH_EXACT;
else
def->match = -1;
} else {
def->match = virCPUMatchTypeFromString(match);
VIR_FREE(match);
if (def->match < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid match attribute for CPU specification"));
goto error;
}
}
}
if (def->type == VIR_CPU_TYPE_HOST) {
def->arch = virXPathString("string(./arch[1])", ctxt);
if (!def->arch) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU architecture"));
goto error;
}
}
if (!(def->model = virXPathString("string(./model[1])", ctxt)) &&
def->type == VIR_CPU_TYPE_HOST) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU model name"));
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;
ret = virXPathULong("string(./topology[1]/@sockets)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'sockets' attribute in CPU topology"));
goto error;
}
def->sockets = (unsigned int) ul;
ret = virXPathULong("string(./topology[1]/@cores)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'cores' attribute in CPU topology"));
goto error;
}
def->cores = (unsigned int) ul;
ret = virXPathULong("string(./topology[1]/@threads)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'threads' attribute in CPU topology"));
goto error;
}
def->threads = (unsigned int) ul;
if (!def->sockets || !def->cores || !def->threads) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU topology"));
goto error;
}
}
n = virXPathNodeSet("./feature", ctxt, &nodes);
if (n < 0)
goto error;
if (n > 0) {
if (!def->model) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Non-empty feature list specified without CPU model"));
goto error;
}
if (VIR_RESIZE_N(def->features, def->nfeatures_max,
def->nfeatures, n) < 0)
goto no_memory;
def->nfeatures = n;
}
for (i = 0 ; i < n ; i++) {
char *name;
int policy; /* enum virDomainCPUFeaturePolicy */
unsigned int j;
if (def->type == VIR_CPU_TYPE_GUEST) {
char *strpolicy;
strpolicy = virXMLPropString(nodes[i], "policy");
if (strpolicy == NULL)
policy = VIR_CPU_FEATURE_REQUIRE;
else
policy = virCPUFeaturePolicyTypeFromString(strpolicy);
VIR_FREE(strpolicy);
if (policy < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU feature policy"));
goto error;
}
}
else
policy = -1;
if (!(name = virXMLPropString(nodes[i], "name")) || *name == 0) {
VIR_FREE(name);
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU feature name"));
goto error;
}
for (j = 0 ; j < i ; j++) {
if (STREQ(name, def->features[j].name)) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU feature `%s' specified more than once"),
name);
VIR_FREE(name);
goto error;
}
}
def->features[i].name = name;
def->features[i].policy = policy;
}
cleanup:
VIR_FREE(nodes);
return def;
no_memory:
virReportOOMError();
error:
virCPUDefFree(def);
def = NULL;
goto cleanup;
}
char *
cpuBaselineXML(const char **xmlCPUs,
unsigned int ncpus,
const char **models,
unsigned int nmodels)
{
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
virCPUDefPtr *cpus = NULL;
virCPUDefPtr cpu = NULL;
char *cpustr;
unsigned int i;
VIR_DEBUG("ncpus=%u, nmodels=%u", ncpus, nmodels);
if (xmlCPUs) {
for (i = 0; i < ncpus; i++)
VIR_DEBUG("xmlCPUs[%u]=%s", i, NULLSTR(xmlCPUs[i]));
}
if (models) {
for (i = 0; i < nmodels; i++)
VIR_DEBUG("models[%u]=%s", i, NULLSTR(models[i]));
}
if (xmlCPUs == NULL && ncpus != 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("nonzero ncpus doesn't match with NULL xmlCPUs"));
return NULL;
}
if (ncpus < 1) {
virCPUReportError(VIR_ERR_INVALID_ARG, "%s", _("No CPUs given"));
return NULL;
}
if (VIR_ALLOC_N(cpus, ncpus))
goto no_memory;
for (i = 0; i < ncpus; i++) {
if (!(doc = virXMLParseStringCtxt(xmlCPUs[i], _("(CPU_definition)"), &ctxt)))
goto error;
cpus[i] = virCPUDefParseXML(ctxt->node, ctxt, VIR_CPU_TYPE_HOST);
if (cpus[i] == NULL)
goto error;
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
ctxt = NULL;
doc = NULL;
}
if (!(cpu = cpuBaseline(cpus, ncpus, models, nmodels)))
goto error;
cpustr = virCPUDefFormat(cpu, 0);
cleanup:
if (cpus) {
for (i = 0; i < ncpus; i++)
virCPUDefFree(cpus[i]);
VIR_FREE(cpus);
}
virCPUDefFree(cpu);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return cpustr;
no_memory:
virReportOOMError();
error:
cpustr = NULL;
goto cleanup;
}
int
virCPUDefFormatBuf(virBufferPtr buf,
virCPUDefPtr def,
const char *indent,
int flags)
{
unsigned int i;
if (!def)
return 0;
if (indent == NULL)
indent = "";
if (!def->model && def->nfeatures) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Non-empty feature list specified without CPU model"));
return -1;
}
if (!(flags & VIR_CPU_FORMAT_EMBEDED)) {
if (def->type == VIR_CPU_TYPE_GUEST && def->model) {
const char *match;
if (!(match = virCPUMatchTypeToString(def->match))) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU match policy %d"), def->match);
return -1;
}
virBufferAsprintf(buf, "%s<cpu match='%s'>\n", indent, match);
}
else
virBufferAsprintf(buf, "%s<cpu>\n", indent);
if (def->arch)
virBufferAsprintf(buf, "%s <arch>%s</arch>\n", indent, def->arch);
}
if (def->model)
virBufferAsprintf(buf, "%s <model>%s</model>\n", indent, def->model);
if (def->vendor) {
virBufferAsprintf(buf, "%s <vendor>%s</vendor>\n",
indent, def->vendor);
}
if (def->sockets && def->cores && def->threads) {
virBufferAsprintf(buf, "%s <topology", indent);
virBufferAsprintf(buf, " sockets='%u'", def->sockets);
virBufferAsprintf(buf, " cores='%u'", def->cores);
virBufferAsprintf(buf, " threads='%u'", def->threads);
virBufferAddLit(buf, "/>\n");
}
for (i = 0 ; i < def->nfeatures ; i++) {
virCPUFeatureDefPtr feature = def->features + i;
if (!feature->name) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU feature name"));
return -1;
}
if (def->type == VIR_CPU_TYPE_GUEST) {
const char *policy;
policy = virCPUFeaturePolicyTypeToString(feature->policy);
if (!policy) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU feature policy %d"), feature->policy);
return -1;
}
virBufferAsprintf(buf, "%s <feature policy='%s' name='%s'/>\n",
indent, policy, feature->name);
}
else {
virBufferAsprintf(buf, "%s <feature name='%s'/>\n",
indent, feature->name);
}
}
if (!(flags & VIR_CPU_FORMAT_EMBEDED))
virBufferAsprintf(buf, "%s</cpu>\n", indent);
return 0;
}
bool
virCPUDefIsEqual(virCPUDefPtr src,
virCPUDefPtr dst)
{
bool identical = false;
int i;
if (!src && !dst)
return true;
if ((src && !dst) || (!src && dst)) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Target CPU does not match source"));
goto cleanup;
}
if (src->type != dst->type) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU type %s does not match source %s"),
virCPUTypeToString(dst->type),
virCPUTypeToString(src->type));
goto cleanup;
}
if (src->mode != dst->mode) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU mode %s does not match source %s"),
virCPUModeTypeToString(dst->mode),
virCPUModeTypeToString(src->mode));
goto cleanup;
}
if (STRNEQ_NULLABLE(src->arch, dst->arch)) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU arch %s does not match source %s"),
NULLSTR(dst->arch), NULLSTR(src->arch));
goto cleanup;
}
if (STRNEQ_NULLABLE(src->model, dst->model)) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU model %s does not match source %s"),
NULLSTR(dst->model), NULLSTR(src->model));
goto cleanup;
}
if (STRNEQ_NULLABLE(src->vendor, dst->vendor)) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU vendor %s does not match source %s"),
NULLSTR(dst->vendor), NULLSTR(src->vendor));
goto cleanup;
}
if (src->sockets != dst->sockets) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU sockets %d does not match source %d"),
dst->sockets, src->sockets);
goto cleanup;
}
if (src->cores != dst->cores) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU cores %d does not match source %d"),
dst->cores, src->cores);
goto cleanup;
}
if (src->threads != dst->threads) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU threads %d does not match source %d"),
dst->threads, src->threads);
goto cleanup;
}
if (src->nfeatures != dst->nfeatures) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU feature count %zu does not match source %zu"),
dst->nfeatures, src->nfeatures);
goto cleanup;
}
for (i = 0 ; i < src->nfeatures ; i++) {
if (STRNEQ(src->features[i].name, dst->features[i].name)) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU feature %s does not match source %s"),
dst->features[i].name, src->features[i].name);
goto cleanup;
}
if (src->features[i].policy != dst->features[i].policy) {
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Target CPU feature policy %s does not match source %s"),
virCPUFeaturePolicyTypeToString(dst->features[i].policy),
virCPUFeaturePolicyTypeToString(src->features[i].policy));
goto cleanup;
}
}
identical = true;
cleanup:
return identical;
}
virCPUDefPtr
virCPUDefParseXML(const xmlNodePtr node,
xmlXPathContextPtr ctxt,
enum virCPUType mode)
{
virCPUDefPtr def;
xmlNodePtr *nodes = NULL;
int n;
unsigned int i;
char *cpuMode;
if (!xmlStrEqual(node->name, BAD_CAST "cpu")) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s",
_("XML does not contain expected 'cpu' element"));
return NULL;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
return NULL;
}
if (mode == VIR_CPU_TYPE_AUTO) {
if (virXPathBoolean("boolean(./arch)", ctxt)) {
if (virXPathBoolean("boolean(./@match)", ctxt)) {
virCPUReportError(VIR_ERR_XML_ERROR, "%s",
_("'arch' element element cannot be used inside 'cpu'"
" element with 'match' attribute'"));
goto error;
}
def->type = VIR_CPU_TYPE_HOST;
} else {
def->type = VIR_CPU_TYPE_GUEST;
}
} else {
def->type = mode;
}
if ((cpuMode = virXMLPropString(node, "mode"))) {
if (def->type == VIR_CPU_TYPE_HOST) {
VIR_FREE(cpuMode);
virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Attribute mode is only allowed for guest CPU"));
goto error;
} else {
def->mode = virCPUModeTypeFromString(cpuMode);
if (def->mode < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid mode attribute '%s'"),
cpuMode);
VIR_FREE(cpuMode);
goto error;
}
VIR_FREE(cpuMode);
}
} else {
if (def->type == VIR_CPU_TYPE_HOST)
def->mode = -1;
else
def->mode = VIR_CPU_MODE_CUSTOM;
}
if (def->type == VIR_CPU_TYPE_GUEST) {
char *match = virXMLPropString(node, "match");
if (!match) {
if (virXPathBoolean("boolean(./model)", ctxt))
def->match = VIR_CPU_MATCH_EXACT;
else
def->match = -1;
} else {
def->match = virCPUMatchTypeFromString(match);
VIR_FREE(match);
if (def->match < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid match attribute for CPU specification"));
goto error;
}
}
}
if (def->type == VIR_CPU_TYPE_HOST) {
def->arch = virXPathString("string(./arch[1])", ctxt);
if (!def->arch) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU architecture"));
goto error;
}
}
if (!(def->model = virXPathString("string(./model[1])", ctxt)) &&
def->type == VIR_CPU_TYPE_HOST) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU model name"));
goto error;
}
if (def->type == VIR_CPU_TYPE_GUEST &&
def->mode != VIR_CPU_MODE_HOST_PASSTHROUGH &&
virXPathBoolean("boolean(./model[1]/@fallback)", ctxt)) {
const char *fallback;
fallback = virXPathString("string(./model[1]/@fallback)", ctxt);
if (fallback) {
def->fallback = virCPUFallbackTypeFromString(fallback);
VIR_FREE(fallback);
if (def->fallback < 0) {
virCPUReportError(VIR_ERR_XML_ERROR, "%s",
_("Invalid fallback attribute"));
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;
ret = virXPathULong("string(./topology[1]/@sockets)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'sockets' attribute in CPU topology"));
goto error;
}
def->sockets = (unsigned int) ul;
ret = virXPathULong("string(./topology[1]/@cores)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'cores' attribute in CPU topology"));
goto error;
}
def->cores = (unsigned int) ul;
ret = virXPathULong("string(./topology[1]/@threads)",
ctxt, &ul);
if (ret < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'threads' attribute in CPU topology"));
goto error;
}
def->threads = (unsigned int) ul;
if (!def->sockets || !def->cores || !def->threads) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU topology"));
goto error;
}
}
n = virXPathNodeSet("./feature", ctxt, &nodes);
if (n < 0)
goto error;
if (n > 0) {
if (!def->model) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Non-empty feature list specified without CPU model"));
goto error;
}
if (VIR_RESIZE_N(def->features, def->nfeatures_max,
def->nfeatures, n) < 0)
goto no_memory;
def->nfeatures = n;
}
for (i = 0 ; i < n ; i++) {
char *name;
int policy; /* enum virDomainCPUFeaturePolicy */
unsigned int j;
if (def->type == VIR_CPU_TYPE_GUEST) {
char *strpolicy;
strpolicy = virXMLPropString(nodes[i], "policy");
if (strpolicy == NULL)
policy = VIR_CPU_FEATURE_REQUIRE;
else
policy = virCPUFeaturePolicyTypeFromString(strpolicy);
VIR_FREE(strpolicy);
if (policy < 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU feature policy"));
goto error;
}
} else {
policy = -1;
}
if (!(name = virXMLPropString(nodes[i], "name")) || *name == 0) {
VIR_FREE(name);
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid CPU feature name"));
goto error;
}
for (j = 0 ; j < i ; j++) {
if (STREQ(name, def->features[j].name)) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("CPU feature `%s' specified more than once"),
name);
VIR_FREE(name);
goto error;
}
}
def->features[i].name = name;
def->features[i].policy = policy;
}
if (virXPathNode("./numa[1]", ctxt)) {
VIR_FREE(nodes);
n = virXPathNodeSet("./numa[1]/cell", ctxt, &nodes);
if (n <= 0) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("NUMA topology defined without NUMA cells"));
goto error;
}
if (VIR_RESIZE_N(def->cells, def->ncells_max,
def->ncells, n) < 0)
goto no_memory;
def->ncells = n;
for (i = 0 ; i < n ; i++) {
char *cpus, *memory;
int cpumasklen = VIR_DOMAIN_CPUMASK_LEN;
int ret, ncpus = 0;
def->cells[i].cellid = i;
cpus = virXMLPropString(nodes[i], "cpus");
if (!cpus) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'cpus' attribute in NUMA cell"));
goto error;
}
def->cells[i].cpustr = cpus;
if (VIR_ALLOC_N(def->cells[i].cpumask, cpumasklen) < 0)
goto no_memory;
ncpus = virDomainCpuSetParse(cpus, 0, def->cells[i].cpumask,
cpumasklen);
if (ncpus <= 0)
goto error;
def->cells_cpus += ncpus;
memory = virXMLPropString(nodes[i], "memory");
if (!memory) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing 'memory' attribute in NUMA cell"));
goto error;
}
ret = virStrToLong_ui(memory, NULL, 10, &def->cells[i].mem);
if (ret == -1) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Invalid 'memory' attribute in NUMA cell"));
VIR_FREE(memory);
goto error;
}
VIR_FREE(memory);
}
}
cleanup:
VIR_FREE(nodes);
return def;
no_memory:
virReportOOMError();
error:
virCPUDefFree(def);
def = NULL;
goto cleanup;
}
int
virCPUDefFormatBuf(virBufferPtr buf,
virCPUDefPtr def,
unsigned int flags)
{
unsigned int i;
bool formatModel;
bool formatFallback;
if (!def)
return 0;
formatModel = (def->mode == VIR_CPU_MODE_CUSTOM ||
(flags & VIR_DOMAIN_XML_UPDATE_CPU));
formatFallback = (def->type == VIR_CPU_TYPE_GUEST &&
(def->mode == VIR_CPU_MODE_HOST_MODEL ||
(def->mode == VIR_CPU_MODE_CUSTOM && def->model)));
if (!def->model && def->nfeatures) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Non-empty feature list specified without CPU model"));
return -1;
}
if ((formatModel && def->model) || formatFallback) {
virBufferAddLit(buf, "<model");
if (formatFallback) {
const char *fallback;
fallback = virCPUFallbackTypeToString(def->fallback);
if (!fallback) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU fallback value: %d"),
def->fallback);
return -1;
}
virBufferAsprintf(buf, " fallback='%s'", fallback);
}
if (formatModel && def->model) {
virBufferAsprintf(buf, ">%s</model>\n", def->model);
} else {
virBufferAddLit(buf, "/>\n");
}
}
if (formatModel && def->vendor)
virBufferAsprintf(buf, "<vendor>%s</vendor>\n", def->vendor);
if (def->sockets && def->cores && def->threads) {
virBufferAddLit(buf, "<topology");
virBufferAsprintf(buf, " sockets='%u'", def->sockets);
virBufferAsprintf(buf, " cores='%u'", def->cores);
virBufferAsprintf(buf, " threads='%u'", def->threads);
virBufferAddLit(buf, "/>\n");
}
if (formatModel) {
for (i = 0 ; i < def->nfeatures ; i++) {
virCPUFeatureDefPtr feature = def->features + i;
if (!feature->name) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
"%s", _("Missing CPU feature name"));
return -1;
}
if (def->type == VIR_CPU_TYPE_GUEST) {
const char *policy;
policy = virCPUFeaturePolicyTypeToString(feature->policy);
if (!policy) {
virCPUReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected CPU feature policy %d"),
feature->policy);
return -1;
}
virBufferAsprintf(buf, "<feature policy='%s' name='%s'/>\n",
policy, feature->name);
} else {
virBufferAsprintf(buf, "<feature name='%s'/>\n",
feature->name);
}
}
}
if (def->ncells) {
virBufferAddLit(buf, "<numa>\n");
for (i = 0; i < def->ncells; i++) {
virBufferAddLit(buf, " <cell");
virBufferAsprintf(buf, " cpus='%s'", def->cells[i].cpustr);
virBufferAsprintf(buf, " memory='%d'", def->cells[i].mem);
virBufferAddLit(buf, "/>\n");
}
virBufferAddLit(buf, "</numa>\n");
}
return 0;
}
