11:32 a.m.
Only "libxl" format supported for now. Special care needed around
vmx/svm, because those two are translated into "nestedhvm" setting.
Signed-off-by: Marek Marczykowski-Górecki <marmarek(a)invisiblethingslab.com>
---
Changes since v5:
- adjust for ignoring mode=custom instead of rejecting it
Changes since v3:
- improve error reporting (VIR_ERR_CONF_SYNTAX)
- ignore empty cpuid option - same as libxl
- fix cleanup on error
Changes since v2:
- new patch
---
src/xenconfig/xen_xl.c | 164 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 164 insertions(+)
diff --git a/src/xenconfig/xen_xl.c b/src/xenconfig/xen_xl.c
index 94d91cd..52ec7e4 100644
--- a/src/xenconfig/xen_xl.c
+++ b/src/xenconfig/xen_xl.c
@@ -253,6 +253,91 @@ xenTranslateCPUFeature(const char *feature_name, bool from_libxl)
return feature_name;
}
+static int
+xenParseXLCPUID(virConfPtr conf, virDomainDefPtr def)
+{
+ const char *cpuid_str = NULL;
+ char **cpuid_pairs = NULL;
+ char **name_and_value = NULL;
+ size_t i;
+ int ret = -1;
+ int policy;
+
+ if (xenConfigGetString(conf, "cpuid", &cpuid_str, NULL) < 0)
+ return -1;
+
+ if (!cpuid_str)
+ return 0;
+
+ if (!def->cpu) {
+ if (VIR_ALLOC(def->cpu) < 0)
+ goto cleanup;
+ def->cpu->mode = VIR_CPU_MODE_HOST_PASSTHROUGH;
+ def->cpu->type = VIR_CPU_TYPE_GUEST;
+ def->cpu->nfeatures = 0;
+ def->cpu->nfeatures_max = 0;
+ }
+
+ cpuid_pairs = virStringSplit(cpuid_str, ",", 0);
+ if (!cpuid_pairs)
+ goto cleanup;
+
+ if (!cpuid_pairs[0]) {
+ ret = 0;
+ goto cleanup;
+ }
+
+ if (STRNEQ(cpuid_pairs[0], "host")) {
+ virReportError(VIR_ERR_CONF_SYNTAX,
+ _("cpuid starting with %s is not supported, only libxl format
is"),
+ cpuid_pairs[0]);
+ goto cleanup;
+ }
+
+ for (i = 1; cpuid_pairs[i]; i++) {
+ name_and_value = virStringSplit(cpuid_pairs[i], "=", 2);
+ if (!name_and_value)
+ goto cleanup;
+ if (!name_and_value[0] || !name_and_value[1]) {
+ virReportError(VIR_ERR_CONF_SYNTAX,
+ _("Invalid libxl cpuid key=value element: %s"),
+ cpuid_pairs[i]);
+ goto cleanup;
+ }
+ if (STREQ(name_and_value[1], "1")) {
+ policy = VIR_CPU_FEATURE_FORCE;
+ } else if (STREQ(name_and_value[1], "0")) {
+ policy = VIR_CPU_FEATURE_DISABLE;
+ } else if (STREQ(name_and_value[1], "x")) {
+ policy = VIR_CPU_FEATURE_OPTIONAL;
+ } else if (STREQ(name_and_value[1], "k")) {
+ policy = VIR_CPU_FEATURE_OPTIONAL;
+ } else if (STREQ(name_and_value[1], "s")) {
+ policy = VIR_CPU_FEATURE_OPTIONAL;
+ } else {
+ virReportError(VIR_ERR_CONF_SYNTAX,
+ _("Invalid libxl cpuid value: %s"),
+ cpuid_pairs[i]);
+ goto cleanup;
+ }
+
+ if (virCPUDefAddFeature(def->cpu,
+ xenTranslateCPUFeature(name_and_value[0], true),
+ policy) < 0)
+ goto cleanup;
+
+ virStringListFree(name_and_value);
+ name_and_value = NULL;
+ }
+
+ ret = 0;
+
+ cleanup:
+ virStringListFree(name_and_value);
+ virStringListFree(cpuid_pairs);
+ return ret;
+}
+
static int
xenParseXLSpice(virConfPtr conf, virDomainDefPtr def)
@@ -1089,6 +1174,9 @@ xenParseXL(virConfPtr conf,
goto cleanup;
#endif
+ if (xenParseXLCPUID(conf, def) < 0)
+ goto cleanup;
+
if (xenParseXLDisk(conf, def) < 0)
goto cleanup;
@@ -1231,6 +1319,79 @@ xenFormatXLOS(virConfPtr conf, virDomainDefPtr def)
return 0;
}
+static int
+xenFormatXLCPUID(virConfPtr conf, virDomainDefPtr def)
+{
+ char **cpuid_pairs = NULL;
+ char *cpuid_string = NULL;
+ size_t i, j;
+ int ret = -1;
+
+ if (!def->cpu)
+ return 0;
+
+ if (def->cpu->mode != VIR_CPU_MODE_HOST_PASSTHROUGH) {
+ VIR_WARN("ignoring CPU mode '%s', only host-passthrough mode "
+ "is supported",
virCPUModeTypeToString(def->cpu->mode));
+ return 0;
+ }
+
+ /* "host" + all features + NULL */
+ if (VIR_ALLOC_N(cpuid_pairs, def->cpu->nfeatures + 2) < 0)
+ return -1;
+
+ if (VIR_STRDUP(cpuid_pairs[0], "host") < 0)
+ goto cleanup;
+
+ j = 1;
+ for (i = 0; i < def->cpu->nfeatures; i++) {
+ const char *feature_name = xenTranslateCPUFeature(
+ def->cpu->features[i].name,
+ false);
+ const char *policy = NULL;
+
+ if (STREQ(feature_name, "vmx") || STREQ(feature_name,
"svm"))
+ /* ignore vmx/svm in cpuid option, translated into nestedhvm
+ * elsewhere */
+ continue;
+
+ switch (def->cpu->features[i].policy) {
+ case VIR_CPU_FEATURE_FORCE:
+ case VIR_CPU_FEATURE_REQUIRE:
+ policy = "1";
+ break;
+ case VIR_CPU_FEATURE_OPTIONAL:
+ policy = "x";
+ break;
+ case VIR_CPU_FEATURE_DISABLE:
+ case VIR_CPU_FEATURE_FORBID:
+ policy = "0";
+ break;
+ }
+ if (virAsprintf(&cpuid_pairs[j++], "%s=%s",
+ feature_name,
+ policy) < 0)
+ goto cleanup;
+ }
+ cpuid_pairs[j] = NULL;
+
+ if (j > 1) {
+ cpuid_string = virStringListJoin((const char **)cpuid_pairs, ",");
+ if (!cpuid_string)
+ goto cleanup;
+
+ if (xenConfigSetString(conf, "cpuid", cpuid_string) < 0)
+ goto cleanup;
+ }
+
+ ret = 0;
+
+ cleanup:
+ virStringListFree(cpuid_pairs);
+ VIR_FREE(cpuid_string);
+ return ret;
+}
+
#ifdef LIBXL_HAVE_VNUMA
static int
xenFormatXLVnode(virConfValuePtr list,
@@ -1996,6 +2157,9 @@ xenFormatXL(virDomainDefPtr def, virConnectPtr conn)
if (xenFormatXLOS(conf, def) < 0)
goto cleanup;
+ if (xenFormatXLCPUID(conf, def) < 0)
+ goto cleanup;
+
#ifdef LIBXL_HAVE_VNUMA
if (xenFormatXLDomainVnuma(conf, def) < 0)
goto cleanup;
--
git-series 0.9.1