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libvirt/tests/cputest.c
Don Dugger d4952d36d0 Add flag to BaselineCPU API to return detailed CPU features 
Currently the virConnectBaselineCPU API does not expose the CPU features
that are part of the CPU's model.  This patch adds a new flag,
VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, that causes the API to explicitly
list all features that are part of that model.

Signed-off-by: Don Dugger <donald.d.dugger@intel.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2013-08-16 15:31:18 -06:00

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/*
* cputest.c: Test the libvirtd internal CPU APIs
*
* Copyright (C) 2010-2012 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Jiri Denemark <jdenemar@redhat.com>
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include "internal.h"
#include "virxml.h"
#include "viralloc.h"
#include "virbuffer.h"
#include "testutils.h"
#include "cpu_conf.h"
#include "cpu/cpu.h"
#include "cpu/cpu_map.h"
#include "virstring.h"
static const char *abs_top_srcdir;
#define VIR_FROM_THIS VIR_FROM_CPU
enum cpuTestBoolWithError {
FAIL = -1,
NO = 0,
YES = 1
};
enum api {
API_COMPARE,
API_GUEST_DATA,
API_BASELINE,
API_UPDATE,
API_HAS_FEATURE
};
static const char *apis[] = {
"compare",
"guest data",
"baseline",
"update",
"has feature"
};
struct data {
const char *arch;
enum api api;
const char *host;
const char *name;
const char **models;
const char *modelsName;
unsigned int nmodels;
const char *preferred;
unsigned int flags;
int result;
};
static virCPUDefPtr
cpuTestLoadXML(const char *arch, const char *name)
{
char *xml = NULL;
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
virCPUDefPtr cpu = NULL;
if (virAsprintf(&xml, "%s/cputestdata/%s-%s.xml", abs_srcdir, arch, name) < 0)
goto cleanup;
if (!(doc = virXMLParseFileCtxt(xml, &ctxt)))
goto cleanup;
cpu = virCPUDefParseXML(ctxt->node, ctxt, VIR_CPU_TYPE_AUTO);
cleanup:
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
VIR_FREE(xml);
return cpu;
}
static virCPUDefPtr *
cpuTestLoadMultiXML(const char *arch,
const char *name,
unsigned int *count)
{
char *xml = NULL;
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
xmlNodePtr *nodes = NULL;
virCPUDefPtr *cpus = NULL;
int n;
size_t i;
if (virAsprintf(&xml, "%s/cputestdata/%s-%s.xml", abs_srcdir, arch, name) < 0)
goto cleanup;
if (!(doc = virXMLParseFileCtxt(xml, &ctxt)))
goto cleanup;
n = virXPathNodeSet("/cpuTest/cpu", ctxt, &nodes);
if (n <= 0 || (VIR_ALLOC_N(cpus, n) < 0))
goto cleanup;
for (i = 0; i < n; i++) {
ctxt->node = nodes[i];
cpus[i] = virCPUDefParseXML(nodes[i], ctxt, VIR_CPU_TYPE_HOST);
if (!cpus[i])
goto cleanup_cpus;
}
*count = n;
cleanup:
VIR_FREE(xml);
VIR_FREE(nodes);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return cpus;
cleanup_cpus:
for (i = 0; i < n; i++)
virCPUDefFree(cpus[i]);
VIR_FREE(cpus);
goto cleanup;
}
static int
cpuTestCompareXML(const char *arch,
const virCPUDefPtr cpu,
const char *name,
unsigned int flags)
{
char *xml = NULL;
char *expected = NULL;
char *actual = NULL;
int ret = -1;
if (virAsprintf(&xml, "%s/cputestdata/%s-%s.xml",
abs_srcdir, arch, name) < 0)
goto cleanup;
if (virtTestLoadFile(xml, &expected) < 0)
goto cleanup;
if (!(actual = virCPUDefFormat(cpu, flags)))
goto cleanup;
if (STRNEQ(expected, actual)) {
if (virTestGetVerbose())
fprintf(stderr, "\nCompared to %s-%s.xml", arch, name);
virtTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(xml);
VIR_FREE(expected);
VIR_FREE(actual);
return ret;
}
static const char *
cpuTestCompResStr(virCPUCompareResult result)
{
switch (result) {
case VIR_CPU_COMPARE_ERROR: return "ERROR";
case VIR_CPU_COMPARE_INCOMPATIBLE: return "INCOMPATIBLE";
case VIR_CPU_COMPARE_IDENTICAL: return "IDENTICAL";
case VIR_CPU_COMPARE_SUPERSET: return "SUPERSET";
case VIR_CPU_COMPARE_LAST: break;
}
return "unknown";
}
static const char *
cpuTestBoolWithErrorStr(enum cpuTestBoolWithError result)
{
switch (result) {
case FAIL: return "FAIL";
case NO: return "NO";
case YES: return "YES";
}
return "unknown";
}
static int
cpuTestCompare(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
virCPUDefPtr cpu = NULL;
virCPUCompareResult result;
if (!(host = cpuTestLoadXML(data->arch, data->host)) ||
!(cpu = cpuTestLoadXML(data->arch, data->name)))
goto cleanup;
result = cpuCompare(host, cpu);
if (data->result == VIR_CPU_COMPARE_ERROR)
virResetLastError();
if (data->result != result) {
if (virTestGetVerbose()) {
fprintf(stderr, "\nExpected result %s, got %s\n",
cpuTestCompResStr(data->result),
cpuTestCompResStr(result));
/* Pad to line up with test name ... in virTestRun */
fprintf(stderr, "%74s", "... ");
}
goto cleanup;
}
ret = 0;
cleanup:
virCPUDefFree(host);
virCPUDefFree(cpu);
return ret;
}
static int
cpuTestGuestData(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
virCPUDefPtr cpu = NULL;
virCPUDefPtr guest = NULL;
virCPUDataPtr guestData = NULL;
virCPUCompareResult cmpResult;
virBuffer buf = VIR_BUFFER_INITIALIZER;
char *result = NULL;
if (!(host = cpuTestLoadXML(data->arch, data->host)) ||
!(cpu = cpuTestLoadXML(data->arch, data->name)))
goto cleanup;
cmpResult = cpuGuestData(host, cpu, &guestData, NULL);
if (cmpResult == VIR_CPU_COMPARE_ERROR ||
cmpResult == VIR_CPU_COMPARE_INCOMPATIBLE)
goto cleanup;
if (VIR_ALLOC(guest) < 0)
goto cleanup;
guest->arch = host->arch;
guest->type = VIR_CPU_TYPE_GUEST;
guest->match = VIR_CPU_MATCH_EXACT;
guest->fallback = cpu->fallback;
if (cpuDecode(guest, guestData, data->models,
data->nmodels, data->preferred) < 0) {
if (data->result < 0) {
virResetLastError();
ret = 0;
}
goto cleanup;
}
virBufferAsprintf(&buf, "%s+%s", data->host, data->name);
if (data->nmodels)
virBufferAsprintf(&buf, ",%s", data->modelsName);
if (data->preferred)
virBufferAsprintf(&buf, ",%s", data->preferred);
virBufferAddLit(&buf, "-result");
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
goto cleanup;
}
result = virBufferContentAndReset(&buf);
ret = cpuTestCompareXML(data->arch, guest, result, 0);
cleanup:
VIR_FREE(result);
cpuDataFree(guestData);
virCPUDefFree(host);
virCPUDefFree(cpu);
virCPUDefFree(guest);
return ret;
}
static int
cpuTestBaseline(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr *cpus = NULL;
virCPUDefPtr baseline = NULL;
unsigned int ncpus = 0;
char *result = NULL;
size_t i;
if (!(cpus = cpuTestLoadMultiXML(data->arch, data->name, &ncpus)))
goto cleanup;
baseline = cpuBaseline(cpus, ncpus, NULL, 0, data->flags);
if (data->result < 0) {
virResetLastError();
if (!baseline)
ret = 0;
else if (virTestGetVerbose()) {
fprintf(stderr, "\n%-70s... ",
"cpuBaseline was expected to fail but it succeeded");
}
goto cleanup;
}
if (!baseline)
goto cleanup;
if (virAsprintf(&result, "%s-result", data->name) < 0)
goto cleanup;
if (cpuTestCompareXML(data->arch, baseline, result, 0) < 0)
goto cleanup;
for (i = 0; i < ncpus; i++) {
virCPUCompareResult cmp;
cmp = cpuCompare(cpus[i], baseline);
if (cmp != VIR_CPU_COMPARE_SUPERSET &&
cmp != VIR_CPU_COMPARE_IDENTICAL) {
if (virTestGetVerbose()) {
fprintf(stderr,
"\nbaseline CPU is incompatible with CPU %zu\n", i);
fprintf(stderr, "%74s", "... ");
}
ret = -1;
goto cleanup;
}
}
ret = 0;
cleanup:
if (cpus) {
for (i = 0; i < ncpus; i++)
virCPUDefFree(cpus[i]);
VIR_FREE(cpus);
}
virCPUDefFree(baseline);
VIR_FREE(result);
return ret;
}
static int
cpuTestUpdate(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
virCPUDefPtr cpu = NULL;
char *result = NULL;
if (!(host = cpuTestLoadXML(data->arch, data->host)) ||
!(cpu = cpuTestLoadXML(data->arch, data->name)))
goto cleanup;
if (cpuUpdate(cpu, host) < 0)
goto cleanup;
if (virAsprintf(&result, "%s+%s", data->host, data->name) < 0)
goto cleanup;
ret = cpuTestCompareXML(data->arch, cpu, result,
VIR_DOMAIN_XML_UPDATE_CPU);
cleanup:
virCPUDefFree(host);
virCPUDefFree(cpu);
VIR_FREE(result);
return ret;
}
static int
cpuTestHasFeature(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
virCPUDataPtr hostData = NULL;
int result;
if (!(host = cpuTestLoadXML(data->arch, data->host)))
goto cleanup;
if (cpuEncode(host->arch, host, NULL, &hostData,
NULL, NULL, NULL, NULL) < 0)
goto cleanup;
result = cpuHasFeature(hostData, data->name);
if (data->result == -1)
virResetLastError();
if (data->result != result) {
if (virTestGetVerbose()) {
fprintf(stderr, "\nExpected result %s, got %s\n",
cpuTestBoolWithErrorStr(data->result),
cpuTestBoolWithErrorStr(result));
/* Pad to line up with test name ... in virTestRun */
fprintf(stderr, "%74s", "... ");
}
goto cleanup;
}
ret = 0;
cleanup:
cpuDataFree(hostData);
virCPUDefFree(host);
return ret;
}
static int (*cpuTest[])(const void *) = {
cpuTestCompare,
cpuTestGuestData,
cpuTestBaseline,
cpuTestUpdate,
cpuTestHasFeature
};
static int
cpuTestRun(const char *name, const struct data *data)
{
char *label = NULL;
char *tmp;
if (virAsprintf(&label, "CPU %s(%s): %s", apis[data->api], data->arch, name) < 0)
return -1;
tmp = virtTestLogContentAndReset();
VIR_FREE(tmp);
if (virtTestRun(label, 1, cpuTest[data->api], data) < 0) {
if (virTestGetDebug()) {
char *log;
if ((log = virtTestLogContentAndReset()) &&
strlen(log) > 0)
fprintf(stderr, "\n%s\n", log);
VIR_FREE(log);
}
VIR_FREE(label);
return -1;
}
VIR_FREE(label);
return 0;
}
static const char *model486[] = { "486" };
static const char *nomodel[] = { "nomodel" };
static const char *models[] = { "qemu64", "core2duo", "Nehalem" };
static int
mymain(void)
{
int ret = 0;
char *map = NULL;
abs_top_srcdir = getenv("abs_top_srcdir");
if (!abs_top_srcdir)
abs_top_srcdir = "..";
if (virAsprintf(&map, "%s/src/cpu/cpu_map.xml", abs_top_srcdir) < 0 ||
cpuMapOverride(map) < 0) {
VIR_FREE(map);
return EXIT_FAILURE;
}
#define DO_TEST(arch, api, name, host, cpu, \
models, nmodels, preferred, flags, result) \
do { \
static struct data data = { \
arch, api, host, cpu, models, \
models == NULL ? NULL : #models, \
nmodels, preferred, flags, result \
}; \
if (cpuTestRun(name, &data) < 0) \
ret = -1; \
} while (0)
#define DO_TEST_COMPARE(arch, host, cpu, result) \
DO_TEST(arch, API_COMPARE, \
host "/" cpu " (" #result ")", \
host, cpu, NULL, 0, NULL, 0, result)
#define DO_TEST_UPDATE(arch, host, cpu, result) \
do { \
DO_TEST(arch, API_UPDATE, \
cpu " on " host, \
host, cpu, NULL, 0, NULL, 0, 0); \
DO_TEST_COMPARE(arch, host, host "+" cpu, result); \
} while (0)
#define DO_TEST_BASELINE(arch, name, flags, result) \
DO_TEST(arch, API_BASELINE, name, NULL, "baseline-" name, \
NULL, 0, NULL, flags, result)
#define DO_TEST_HASFEATURE(arch, host, feature, result) \
DO_TEST(arch, API_HAS_FEATURE, \
host "/" feature " (" #result ")", \
host, feature, NULL, 0, NULL, 0, result)
#define DO_TEST_GUESTDATA(arch, host, cpu, models, preferred, result) \
DO_TEST(arch, API_GUEST_DATA, \
host "/" cpu " (" #models ", pref=" #preferred ")", \
host, cpu, models, \
models == NULL ? 0 : sizeof(models) / sizeof(char *), \
preferred, 0, result)
/* host to host comparison */
DO_TEST_COMPARE("x86", "host", "host", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host", "host-better", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-worse", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "host-amd-fake", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-incomp-arch", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-no-vendor", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host-no-vendor", "host", VIR_CPU_COMPARE_INCOMPATIBLE);
/* guest to host comparison */
DO_TEST_COMPARE("x86", "host", "bogus-model", VIR_CPU_COMPARE_ERROR);
DO_TEST_COMPARE("x86", "host", "bogus-feature", VIR_CPU_COMPARE_ERROR);
DO_TEST_COMPARE("x86", "host", "min", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "pentium3", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-forbid", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "exact-forbid-extra", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable2", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable-extra", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-require", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-require-extra", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "exact-force", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "strict", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "strict-full", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host", "strict-disable", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host", "strict-force-extra", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host", "guest", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host", "pentium3-amd", VIR_CPU_COMPARE_INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host-amd", "pentium3-amd", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_COMPARE("x86", "host-worse", "nehalem-force", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_COMPARE("x86", "host-SandyBridge", "exact-force-Haswell", VIR_CPU_COMPARE_IDENTICAL);
/* guest updates for migration
* automatically compares host CPU with the result */
DO_TEST_UPDATE("x86", "host", "min", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_UPDATE("x86", "host", "pentium3", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_UPDATE("x86", "host", "guest", VIR_CPU_COMPARE_SUPERSET);
DO_TEST_UPDATE("x86", "host", "host-model", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_UPDATE("x86", "host", "host-model-nofallback", VIR_CPU_COMPARE_IDENTICAL);
DO_TEST_UPDATE("x86", "host", "host-passthrough", VIR_CPU_COMPARE_IDENTICAL);
/* computing baseline CPUs */
DO_TEST_BASELINE("x86", "incompatible-vendors", 0, -1);
DO_TEST_BASELINE("x86", "no-vendor", 0, 0);
DO_TEST_BASELINE("x86", "some-vendors", 0, 0);
DO_TEST_BASELINE("x86", "1", 0, 0);
DO_TEST_BASELINE("x86", "2", 0, 0);
DO_TEST_BASELINE("x86", "3", VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, 0);
/* CPU features */
DO_TEST_HASFEATURE("x86", "host", "vmx", YES);
DO_TEST_HASFEATURE("x86", "host", "lm", YES);
DO_TEST_HASFEATURE("x86", "host", "sse4.1", YES);
DO_TEST_HASFEATURE("x86", "host", "3dnowext", NO);
DO_TEST_HASFEATURE("x86", "host", "skinit", NO);
DO_TEST_HASFEATURE("x86", "host", "foo", FAIL);
/* computing guest data and decoding the data into a guest CPU XML */
DO_TEST_GUESTDATA("x86", "host", "guest", NULL, NULL, 0);
DO_TEST_GUESTDATA("x86", "host-better", "pentium3", NULL, NULL, 0);
DO_TEST_GUESTDATA("x86", "host-better", "pentium3", NULL, "pentium3", 0);
DO_TEST_GUESTDATA("x86", "host-better", "pentium3", NULL, "core2duo", 0);
DO_TEST_GUESTDATA("x86", "host-worse", "guest", NULL, NULL, 0);
DO_TEST_GUESTDATA("x86", "host", "strict-force-extra", NULL, NULL, 0);
DO_TEST_GUESTDATA("x86", "host", "nehalem-force", NULL, NULL, 0);
DO_TEST_GUESTDATA("x86", "host", "guest", model486, NULL, 0);
DO_TEST_GUESTDATA("x86", "host", "guest", models, NULL, 0);
DO_TEST_GUESTDATA("x86", "host", "guest", models, "Penryn", 0);
DO_TEST_GUESTDATA("x86", "host", "guest", models, "qemu64", 0);
DO_TEST_GUESTDATA("x86", "host", "guest", nomodel, NULL, -1);
DO_TEST_GUESTDATA("x86", "host", "guest-nofallback", models, "Penryn", -1);
DO_TEST_GUESTDATA("x86", "host", "host+host-model", models, "Penryn", 0);
DO_TEST_GUESTDATA("x86", "host", "host+host-model-nofallback",
models, "Penryn", -1);
VIR_FREE(map);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN(mymain)
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