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libvirt/tests/cputest.c
Jiri Denemark 598b9fe4af tests: Add unit tests for internal CPU APIs
2010-12-01 14:12:54 +01:00

634 lines
18 KiB
C
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/*
* cputest.c: Test the libvirtd internal CPU APIs
*
* Copyright (C) 2010 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 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 "xml.h"
#include "memory.h"
#include "buf.h"
#include "testutils.h"
#include "cpu_conf.h"
#include "cpu/cpu.h"
#include "cpu/cpu_map.h"
static const char *progname;
static const char *abs_srcdir;
static const char *abs_top_srcdir;
#define VIR_FROM_THIS VIR_FROM_CPU
#define MAX_FILE 4096
enum compResultShadow {
ERROR = VIR_CPU_COMPARE_ERROR,
INCOMPATIBLE = VIR_CPU_COMPARE_INCOMPATIBLE,
IDENTICAL = VIR_CPU_COMPARE_IDENTICAL,
SUPERSET = VIR_CPU_COMPARE_SUPERSET
};
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;
int result;
};
static virCPUDefPtr
cpuTestLoadXML(const char *arch, const char *name)
{
char xml[PATH_MAX];
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
virCPUDefPtr cpu = NULL;
snprintf(xml, PATH_MAX,
"%s/cputestdata/%s-%s.xml",
abs_srcdir, arch, name);
if (!(doc = virXMLParseFile(xml)) ||
!(ctxt = xmlXPathNewContext(doc)))
goto cleanup;
ctxt->node = xmlDocGetRootElement(doc);
cpu = virCPUDefParseXML(ctxt->node, ctxt, VIR_CPU_TYPE_AUTO);
cleanup:
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return cpu;
}
static virCPUDefPtr *
cpuTestLoadMultiXML(const char *arch,
const char *name,
unsigned int *count)
{
char xml[PATH_MAX];
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
xmlNodePtr *nodes = NULL;
virCPUDefPtr *cpus = NULL;
int n;
int i;
snprintf(xml, PATH_MAX,
"%s/cputestdata/%s-%s.xml",
abs_srcdir, arch, name);
if (!(doc = virXMLParseFile(xml)) ||
!(ctxt = xmlXPathNewContext(doc)))
goto error;
ctxt->node = xmlDocGetRootElement(doc);
n = virXPathNodeSet("/cpuTest/cpu", ctxt, &nodes);
if (n <= 0 || !(cpus = calloc(n, sizeof(virCPUDefPtr))))
goto error;
for (i = 0; i < n; i++) {
ctxt->node = nodes[i];
cpus[i] = virCPUDefParseXML(nodes[i], ctxt, VIR_CPU_TYPE_HOST);
if (!cpus[i])
goto error;
}
*count = n;
cleanup:
free(nodes);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return cpus;
error:
if (cpus) {
for (i = 0; i < n; i++)
virCPUDefFree(cpus[i]);
free(cpus);
cpus = NULL;
}
goto cleanup;
}
static int
cpuTestCompareXML(const char *arch,
const virCPUDefPtr cpu,
const char *name)
{
char xml[PATH_MAX];
char expected[MAX_FILE];
char *expectedPtr = &(expected[0]);
char *actual = NULL;
int ret = -1;
snprintf(xml, PATH_MAX,
"%s/cputestdata/%s-%s.xml",
abs_srcdir, arch, name);
if (virtTestLoadFile(xml, &expectedPtr, MAX_FILE) < 0)
goto cleanup;
if (!(actual = virCPUDefFormat(cpu, NULL, 0)))
goto cleanup;
if (STRNEQ(expected, actual)) {
virtTestDifference(stderr, expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
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";
}
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;
union cpuData *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);
if (cmpResult == VIR_CPU_COMPARE_ERROR ||
cmpResult == VIR_CPU_COMPARE_INCOMPATIBLE)
goto cleanup;
if (VIR_ALLOC(guest) < 0 || !(guest->arch = strdup(host->arch)))
goto cleanup;
guest->type = VIR_CPU_TYPE_GUEST;
guest->match = VIR_CPU_MATCH_EXACT;
if (cpuDecode(guest, guestData, data->models,
data->nmodels, data->preferred) < 0) {
if (data->result < 0) {
virResetLastError();
ret = 0;
}
goto cleanup;
}
virBufferVSprintf(&buf, "%s+%s", data->host, data->name);
if (data->nmodels)
virBufferVSprintf(&buf, ",%s", data->modelsName);
if (data->preferred)
virBufferVSprintf(&buf, ",%s", data->preferred);
virBufferAddLit(&buf, "-result");
if (virBufferError(&buf)) {
virBufferFreeAndReset(&buf);
goto cleanup;
}
result = virBufferContentAndReset(&buf);
ret = cpuTestCompareXML(data->arch, guest, result);
cleanup:
VIR_FREE(result);
if (host)
cpuDataFree(host->arch, 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[PATH_MAX];
unsigned int i;
if (!(cpus = cpuTestLoadMultiXML(data->arch, data->name, &ncpus)))
goto cleanup;
baseline = cpuBaseline(cpus, ncpus, NULL, 0);
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;
snprintf(result, PATH_MAX, "%s-result", data->name);
if (cpuTestCompareXML(data->arch, baseline, result) < 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 %u\n", i);
fprintf(stderr, "%74s", "... ");
}
ret = -1;
goto cleanup;
}
}
ret = 0;
cleanup:
if (cpus) {
for (i = 0; i < ncpus; i++)
virCPUDefFree(cpus[i]);
free(cpus);
}
virCPUDefFree(baseline);
return ret;
}
static int
cpuTestUpdate(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
virCPUDefPtr cpu = NULL;
char result[PATH_MAX];
if (!(host = cpuTestLoadXML(data->arch, data->host)) ||
!(cpu = cpuTestLoadXML(data->arch, data->name)))
goto cleanup;
if (cpuUpdate(cpu, host) < 0)
goto cleanup;
snprintf(result, PATH_MAX, "%s+%s", data->host, data->name);
ret = cpuTestCompareXML(data->arch, cpu, result);
cleanup:
virCPUDefFree(host);
virCPUDefFree(cpu);
return ret;
}
static int
cpuTestHasFeature(const void *arg)
{
const struct data *data = arg;
int ret = -1;
virCPUDefPtr host = NULL;
union cpuData *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(host->arch, 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:
if (host)
cpuDataFree(host->arch, 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[PATH_MAX];
snprintf(label, PATH_MAX, "CPU %s(%s): %s",
apis[data->api], data->arch, name);
free(virtTestLogContentAndReset());
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);
free(log);
}
return -1;
}
return 0;
}
static const char *model486[] = { "486" };
static const char *nomodel[] = { "nomodel" };
static const char *models[] = { "qemu64", "core2duo", "Nehalem" };
static int
mymain(int argc, char **argv)
{
int ret = 0;
char cwd[PATH_MAX];
char map[PATH_MAX];
progname = argv[0];
if (argc > 1) {
fprintf(stderr, "Usage: %s\n", progname);
return EXIT_FAILURE;
}
abs_srcdir = getenv("abs_srcdir");
if (!abs_srcdir)
abs_srcdir = getcwd(cwd, sizeof(cwd));
abs_top_srcdir = getenv("abs_top_srcdir");
if (!abs_top_srcdir)
abs_top_srcdir = "..";
snprintf(map, PATH_MAX, "%s/src/cpu/cpu_map.xml", abs_top_srcdir);
if (cpuMapOverride(map) < 0)
return EXIT_FAILURE;
#define DO_TEST(arch, api, name, host, cpu, \
models, nmodels, preferred, result) \
do { \
struct data data = { \
arch, api, host, cpu, models, \
models == NULL ? NULL : #models, \
nmodels, preferred, 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, result)
#define DO_TEST_UPDATE(arch, host, cpu, result) \
do { \
DO_TEST(arch, API_UPDATE, \
cpu " on " host, \
host, cpu, NULL, 0, NULL, 0); \
DO_TEST_COMPARE(arch, host, host "+" cpu, result); \
} while (0)
#define DO_TEST_BASELINE(arch, name, result) \
DO_TEST(arch, API_BASELINE, name, NULL, "baseline-" name, \
NULL, 0, NULL, result)
#define DO_TEST_HASFEATURE(arch, host, feature, result) \
DO_TEST(arch, API_HAS_FEATURE, \
host "/" feature " (" #result ")", \
host, feature, NULL, 0, NULL, 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, result)
/* host to host comparison */
DO_TEST_COMPARE("x86", "host", "host", IDENTICAL);
DO_TEST_COMPARE("x86", "host", "host-better", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-worse", SUPERSET);
DO_TEST_COMPARE("x86", "host", "host-amd-fake", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-incomp-arch", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "host-no-vendor", IDENTICAL);
DO_TEST_COMPARE("x86", "host-no-vendor", "host", INCOMPATIBLE);
/* guest to host comparison */
DO_TEST_COMPARE("x86", "host", "bogus-model", ERROR);
DO_TEST_COMPARE("x86", "host", "bogus-feature", ERROR);
DO_TEST_COMPARE("x86", "host", "min", SUPERSET);
DO_TEST_COMPARE("x86", "host", "pentium3", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-forbid", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "exact-forbid-extra", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable2", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-disable-extra", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-require", SUPERSET);
DO_TEST_COMPARE("x86", "host", "exact-require-extra", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "exact-force", SUPERSET);
DO_TEST_COMPARE("x86", "host", "strict", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host", "strict-full", IDENTICAL);
DO_TEST_COMPARE("x86", "host", "strict-disable", IDENTICAL);
DO_TEST_COMPARE("x86", "host", "strict-force-extra", IDENTICAL);
DO_TEST_COMPARE("x86", "host", "guest", SUPERSET);
DO_TEST_COMPARE("x86", "host", "pentium3-amd", INCOMPATIBLE);
DO_TEST_COMPARE("x86", "host-amd", "pentium3-amd", SUPERSET);
DO_TEST_COMPARE("x86", "host-worse", "nehalem-force", IDENTICAL);
/* guest updates for migration
* automatically compares host CPU with the result */
DO_TEST_UPDATE("x86", "host", "min", IDENTICAL);
DO_TEST_UPDATE("x86", "host", "pentium3", IDENTICAL);
DO_TEST_UPDATE("x86", "host", "guest", SUPERSET);
/* computing baseline CPUs */
DO_TEST_BASELINE("x86", "incompatible-vendors", -1);
DO_TEST_BASELINE("x86", "no-vendor", 0);
DO_TEST_BASELINE("x86", "some-vendors", 0);
DO_TEST_BASELINE("x86", "1", 0);
DO_TEST_BASELINE("x86", "2", 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);
return (ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
VIRT_TEST_MAIN(mymain)
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