aboutsummaryrefslogtreecommitdiff
path: root/tests/test-x86-cpuid-compat.c
blob: 260dd2795c7c4e0fcabb58feafb6891aac0c3f5f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qapi/qmp/qlist.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qint.h"
#include "qapi/qmp/qbool.h"
#include "libqtest.h"

static char *get_cpu0_qom_path(void)
{
    QDict *resp;
    QList *ret;
    QDict *cpu0;
    char *path;

    resp = qmp("{'execute': 'query-cpus', 'arguments': {}}");
    g_assert(qdict_haskey(resp, "return"));
    ret = qdict_get_qlist(resp, "return");

    cpu0 = qobject_to_qdict(qlist_peek(ret));
    path = g_strdup(qdict_get_str(cpu0, "qom_path"));
    QDECREF(resp);
    return path;
}

static QObject *qom_get(const char *path, const char *prop)
{
    QDict *resp = qmp("{ 'execute': 'qom-get',"
                      "  'arguments': { 'path': %s,"
                      "                 'property': %s } }",
                      path, prop);
    QObject *ret = qdict_get(resp, "return");
    qobject_incref(ret);
    QDECREF(resp);
    return ret;
}

static bool qom_get_bool(const char *path, const char *prop)
{
    QBool *value = qobject_to_qbool(qom_get(path, prop));
    bool b = qbool_get_bool(value);

    QDECREF(value);
    return b;
}

typedef struct CpuidTestArgs {
    const char *cmdline;
    const char *property;
    int64_t expected_value;
} CpuidTestArgs;

static void test_cpuid_prop(const void *data)
{
    const CpuidTestArgs *args = data;
    char *path;
    QInt *value;

    qtest_start(args->cmdline);
    path = get_cpu0_qom_path();
    value = qobject_to_qint(qom_get(path, args->property));
    g_assert_cmpint(qint_get_int(value), ==, args->expected_value);
    qtest_end();

    QDECREF(value);
    g_free(path);
}

static void add_cpuid_test(const char *name, const char *cmdline,
                           const char *property, int64_t expected_value)
{
    CpuidTestArgs *args = g_new0(CpuidTestArgs, 1);
    args->cmdline = cmdline;
    args->property = property;
    args->expected_value = expected_value;
    qtest_add_data_func(name, args, test_cpuid_prop);
}

static void test_plus_minus(void)
{
    char *path;

    /* Rules:
     * 1)"-foo" overrides "+foo"
     * 2) "[+-]foo" overrides "foo=..."
     * 3) Old feature names with underscores (e.g. "sse4_2")
     *    should keep working
     *
     * Note: rules 1 and 2 are planned to be removed soon, but we
     * need to keep compatibility for a while until we start
     * warning users about it.
     */
    qtest_start("-cpu pentium,-fpu,+fpu,-mce,mce=on,+cx8,cx8=off,+sse4_1,sse4_2=on");
    path = get_cpu0_qom_path();

    g_assert_false(qom_get_bool(path, "fpu"));
    g_assert_false(qom_get_bool(path, "mce"));
    g_assert_true(qom_get_bool(path, "cx8"));

    /* Test both the original and the alias feature names: */
    g_assert_true(qom_get_bool(path, "sse4-1"));
    g_assert_true(qom_get_bool(path, "sse4.1"));

    g_assert_true(qom_get_bool(path, "sse4-2"));
    g_assert_true(qom_get_bool(path, "sse4.2"));

    qtest_end();
    g_free(path);
}

int main(int argc, char **argv)
{
    g_test_init(&argc, &argv, NULL);

    qtest_add_func("x86/cpuid/parsing-plus-minus", test_plus_minus);

    /* Original level values for CPU models: */
    add_cpuid_test("x86/cpuid/phenom/level",
                   "-cpu phenom", "level", 5);
    add_cpuid_test("x86/cpuid/Conroe/level",
                   "-cpu Conroe", "level", 10);
    add_cpuid_test("x86/cpuid/SandyBridge/level",
                   "-cpu SandyBridge", "level", 0xd);
    add_cpuid_test("x86/cpuid/486/xlevel",
                   "-cpu 486", "xlevel", 0);
    add_cpuid_test("x86/cpuid/core2duo/xlevel",
                   "-cpu core2duo", "xlevel", 0x80000008);
    add_cpuid_test("x86/cpuid/phenom/xlevel",
                   "-cpu phenom", "xlevel", 0x8000001A);
    add_cpuid_test("x86/cpuid/athlon/xlevel",
                   "-cpu athlon", "xlevel", 0x80000008);

    /* If level is not large enough, it should increase automatically: */
    /* CPUID[6].EAX: */
    add_cpuid_test("x86/cpuid/auto-level/phenom/arat",
                   "-cpu 486,+arat", "level", 6);
    /* CPUID[EAX=7,ECX=0].EBX: */
    add_cpuid_test("x86/cpuid/auto-level/phenom/fsgsbase",
                   "-cpu phenom,+fsgsbase", "level", 7);
    /* CPUID[EAX=7,ECX=0].ECX: */
    add_cpuid_test("x86/cpuid/auto-level/phenom/avx512vbmi",
                   "-cpu phenom,+avx512vbmi", "level", 7);
    /* CPUID[EAX=0xd,ECX=1].EAX: */
    add_cpuid_test("x86/cpuid/auto-level/phenom/xsaveopt",
                   "-cpu phenom,+xsaveopt", "level", 0xd);
    /* CPUID[8000_0001].EDX: */
    add_cpuid_test("x86/cpuid/auto-xlevel/486/3dnow",
                   "-cpu 486,+3dnow", "xlevel", 0x80000001);
    /* CPUID[8000_0001].ECX: */
    add_cpuid_test("x86/cpuid/auto-xlevel/486/sse4a",
                   "-cpu 486,+sse4a", "xlevel", 0x80000001);
    /* CPUID[8000_0007].EDX: */
    add_cpuid_test("x86/cpuid/auto-xlevel/486/invtsc",
                   "-cpu 486,+invtsc", "xlevel", 0x80000007);
    /* CPUID[8000_000A].EDX: */
    add_cpuid_test("x86/cpuid/auto-xlevel/486/npt",
                   "-cpu 486,+npt", "xlevel", 0x8000000A);
    /* CPUID[C000_0001].EDX: */
    add_cpuid_test("x86/cpuid/auto-xlevel2/phenom/xstore",
                   "-cpu phenom,+xstore", "xlevel2", 0xC0000001);
    /* SVM needs CPUID[0x8000000A] */
    add_cpuid_test("x86/cpuid/auto-xlevel/athlon/svm",
                   "-cpu athlon,+svm", "xlevel", 0x8000000A);


    /* If level is already large enough, it shouldn't change: */
    add_cpuid_test("x86/cpuid/auto-level/SandyBridge/multiple",
                   "-cpu SandyBridge,+arat,+fsgsbase,+avx512vbmi",
                   "level", 0xd);
    /* If level is explicitly set, it shouldn't change: */
    add_cpuid_test("x86/cpuid/auto-level/486/fixed/0xF",
                   "-cpu 486,level=0xF,+arat,+fsgsbase,+avx512vbmi,+xsaveopt",
                   "level", 0xF);
    add_cpuid_test("x86/cpuid/auto-level/486/fixed/2",
                   "-cpu 486,level=2,+arat,+fsgsbase,+avx512vbmi,+xsaveopt",
                   "level", 2);
    add_cpuid_test("x86/cpuid/auto-level/486/fixed/0",
                   "-cpu 486,level=0,+arat,+fsgsbase,+avx512vbmi,+xsaveopt",
                   "level", 0);

    /* if xlevel is already large enough, it shouldn't change: */
    add_cpuid_test("x86/cpuid/auto-xlevel/phenom/3dnow",
                   "-cpu phenom,+3dnow,+sse4a,+invtsc,+npt,+svm",
                   "xlevel", 0x8000001A);
    /* If xlevel is explicitly set, it shouldn't change: */
    add_cpuid_test("x86/cpuid/auto-xlevel/486/fixed/80000002",
                   "-cpu 486,xlevel=0x80000002,+3dnow,+sse4a,+invtsc,+npt,+svm",
                   "xlevel", 0x80000002);
    add_cpuid_test("x86/cpuid/auto-xlevel/486/fixed/8000001A",
                   "-cpu 486,xlevel=0x8000001A,+3dnow,+sse4a,+invtsc,+npt,+svm",
                   "xlevel", 0x8000001A);
    add_cpuid_test("x86/cpuid/auto-xlevel/phenom/fixed/0",
                   "-cpu 486,xlevel=0,+3dnow,+sse4a,+invtsc,+npt,+svm",
                   "xlevel", 0);

    /* if xlevel2 is already large enough, it shouldn't change: */
    add_cpuid_test("x86/cpuid/auto-xlevel2/486/fixed",
                   "-cpu 486,xlevel2=0xC0000002,+xstore",
                   "xlevel2", 0xC0000002);

    /* Check compatibility of old machine-types that didn't
     * auto-increase level/xlevel/xlevel2: */

    add_cpuid_test("x86/cpuid/auto-level/pc-2.7",
                   "-machine pc-i440fx-2.7 -cpu 486,+arat,+avx512vbmi,+xsaveopt",
                   "level", 1);
    add_cpuid_test("x86/cpuid/auto-xlevel/pc-2.7",
                   "-machine pc-i440fx-2.7 -cpu 486,+3dnow,+sse4a,+invtsc,+npt,+svm",
                   "xlevel", 0);
    add_cpuid_test("x86/cpuid/auto-xlevel2/pc-2.7",
                   "-machine pc-i440fx-2.7 -cpu 486,+xstore",
                   "xlevel2", 0);

    return g_test_run();
}