The test takes
x86-cpuid-Something-guest.xml CPU (the CPU libvirt would use for
host-model on a CPU described by x86_64-cpuid-Something.xml without
talking to QEMU about what it supports on the host)
and updates it according to CPUID data from QEMU:
x86_64-cpuid-Something-enabled.xml (reported as "feature-words"
property of the CPU device)
and
x86_64-cpuid-Something-disabled.xml (reported as "filtered-features"
property of the CPU device).
The result is compared to
x86_64-cpuid-Something-json.xml (the CPU libvirt would use as
host-model based on the reply from query-cpu-model-expansion).
The comparison is a bit tricky because the *-json.xml CPU contains fewer
disabled features. Only the features which are included in the base CPU
model, but listed as disabled in *.json will be disabled in *-json.xml.
The CPU computed by virCPUUpdateLive from the test data will list all
features present in the host's CPUID data and not enabled in *.json as
disabled. The cpuTestUpdateLiveCompare function checks that the computed
and expected sets of enabled features match.
Signed-off-by: Jiri Denemark <jdenemar@xxxxxxxxxx>
---
tests/cputest.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 149 insertions(+)
diff --git a/tests/cputest.c b/tests/cputest.c
index 4a4d427e1..2c64c2cd0 100644
--- a/tests/cputest.c
+++ b/tests/cputest.c
@@ -523,6 +523,151 @@ cpuTestGuestCPUID(const void *arg)
}
+static int
+cpuTestUpdateLiveCompare(virArch arch,
+ virCPUDefPtr actual,
+ virCPUDefPtr expected)
+{
+ size_t i, j;
+ int ret = 0;
+
+ if (virCPUExpandFeatures(arch, actual) < 0 ||
+ virCPUExpandFeatures(arch, expected) < 0)
+ return -1;
+
+ if (STRNEQ(actual->model, expected->model)) {
+ VIR_TEST_VERBOSE("Actual CPU model '%s', expected '%s'\n",
+ actual->model, expected->model);
+ return -1;
+ }
+
+ i = j = 0;
+ while (i < actual->nfeatures || j < expected->nfeatures) {
+ virCPUFeatureDefPtr featAct = NULL;
+ virCPUFeatureDefPtr featExp = NULL;
+ int cmp;
+
+ if (i < actual->nfeatures)
+ featAct = actual->features + i;
+
+ if (j < expected->nfeatures)
+ featExp = expected->features + j;
+
+ /*
+ * Act < Exp => cmp < 0 (missing entry in Exp)
+ * Act = Exp => cmp = 0
+ * Act > Exp => cmp > 0 (missing entry in Act)
+ *
+ * NULL > name for any name != NULL
+ */
+ if (featAct && featExp)
+ cmp = strcmp(featAct->name, featExp->name);
+ else
+ cmp = featExp ? 1 : -1;
+
+ if (cmp <= 0)
+ i++;
+ if (cmp >= 0)
+ j++;
+
+ /* Possible combinations of cmp, featAct->policy, and featExp->policy:
+ * cmp Act Exp result
+ * ---------------------------------
+ * 0 dis dis ok
+ * 0 dis req missing
+ * 0 req dis extra
+ * 0 req req ok
+ * ---------------------------------
+ * - dis X ok # ignoring extra disabled features
+ * - req X extra
+ * ---------------------------------
+ * + X dis extra
+ * + X req missing
+ */
+ if ((cmp == 0 &&
+ featAct->policy == VIR_CPU_FEATURE_DISABLE &&
+ featExp->policy == VIR_CPU_FEATURE_REQUIRE) ||
+ (cmp > 0 &&
+ featExp->policy == VIR_CPU_FEATURE_REQUIRE)) {
+ VIR_TEST_VERBOSE("Actual CPU lacks feature '%s'\n",
+ featExp->name);
+ ret = -1;
+ continue;
+ }
+
+ if ((cmp == 0 &&
+ featAct->policy == VIR_CPU_FEATURE_REQUIRE &&
+ featExp->policy == VIR_CPU_FEATURE_DISABLE) ||
+ (cmp < 0 &&
+ featAct->policy == VIR_CPU_FEATURE_REQUIRE) ||
+ (cmp > 0 &&
+ featExp->policy == VIR_CPU_FEATURE_DISABLE)) {
+ VIR_TEST_VERBOSE("Actual CPU has extra feature '%s'\n",
+ featAct->name);
+ ret = -1;
+ }
+ }
+
+ return ret;
+}
+
+
+static int
+cpuTestUpdateLive(const void *arg)
+{
+ const struct data *data = arg;
+ char *cpuFile = NULL;
+ virCPUDefPtr cpu = NULL;
+ char *enabledFile = NULL;
+ char *enabled = NULL;
+ virCPUDataPtr enabledData = NULL;
+ char *disabledFile = NULL;
+ char *disabled = NULL;
+ virCPUDataPtr disabledData = NULL;
+ char *expectedFile = NULL;
+ virCPUDefPtr expected = NULL;
+ int ret = -1;
+
+ if (virAsprintf(&cpuFile, "cpuid-%s-guest", data->host) < 0 ||
+ !(cpu = cpuTestLoadXML(data->arch, cpuFile)))
+ goto cleanup;
+
+ if (virAsprintf(&enabledFile, "%s/cputestdata/%s-cpuid-%s-enabled.xml",
+ abs_srcdir, virArchToString(data->arch), data->host) < 0 ||
+ virTestLoadFile(enabledFile, &enabled) < 0 ||
+ !(enabledData = virCPUDataParse(enabled)))
+ goto cleanup;
+
+ if (virAsprintf(&disabledFile, "%s/cputestdata/%s-cpuid-%s-disabled.xml",
+ abs_srcdir, virArchToString(data->arch), data->host) < 0 ||
+ virTestLoadFile(disabledFile, &disabled) < 0 ||
+ !(disabledData = virCPUDataParse(disabled)))
+ goto cleanup;
+
+ if (virCPUUpdateLive(data->arch, cpu, enabledData, disabledData) < 0)
+ goto cleanup;
+
+ if (virAsprintf(&expectedFile, "cpuid-%s-json", data->host) < 0 ||
+ !(expected = cpuTestLoadXML(data->arch, expectedFile)))
+ goto cleanup;
+
+ ret = cpuTestUpdateLiveCompare(data->arch, cpu, expected);
+
+ cleanup:
+ VIR_FREE(cpuFile);
+ virCPUDefFree(cpu);
+ VIR_FREE(enabledFile);
+ VIR_FREE(enabled);
+ virCPUDataFree(enabledData);
+ VIR_FREE(disabledFile);
+ VIR_FREE(disabled);
+ virCPUDataFree(disabledData);
+ VIR_FREE(expectedFile);
+ virCPUDefFree(expected);
+ return ret;
+}
+
+
#if WITH_QEMU && WITH_YAJL
static int
cpuTestJSONCPUID(const void *arg)
@@ -697,6 +842,10 @@ mymain(void)
DO_TEST(arch, cpuTestGuestCPUID, host, host, \
NULL, NULL, 0, 0, 0); \
DO_TEST_CPUID_JSON(arch, host, json); \
+ if (json) { \
+ DO_TEST(arch, cpuTestUpdateLive, host, host, \
+ NULL, NULL, 0, 0, 0); \
+ } \
} while (0)
/* host to host comparison */
--
2.12.0
--
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