| 34 |
34 |
do { } while (0)
|
| 35 |
35 |
#endif
|
| 36 |
36 |
|
|
37 |
#ifdef KVM_CAP_EXT_CPUID
|
|
38 |
|
|
39 |
static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max)
|
|
40 |
{
|
|
41 |
struct kvm_cpuid2 *cpuid;
|
|
42 |
int r, size;
|
|
43 |
|
|
44 |
size = sizeof(*cpuid) + max * sizeof(*cpuid->entries);
|
|
45 |
cpuid = (struct kvm_cpuid2 *)qemu_mallocz(size);
|
|
46 |
cpuid->nent = max;
|
|
47 |
r = kvm_ioctl(s, KVM_GET_SUPPORTED_CPUID, cpuid);
|
|
48 |
if (r < 0) {
|
|
49 |
if (r == -E2BIG) {
|
|
50 |
qemu_free(cpuid);
|
|
51 |
return NULL;
|
|
52 |
} else {
|
|
53 |
fprintf(stderr, "KVM_GET_SUPPORTED_CPUID failed: %s\n",
|
|
54 |
strerror(-r));
|
|
55 |
exit(1);
|
|
56 |
}
|
|
57 |
}
|
|
58 |
return cpuid;
|
|
59 |
}
|
|
60 |
|
|
61 |
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
|
|
62 |
{
|
|
63 |
struct kvm_cpuid2 *cpuid;
|
|
64 |
int i, max;
|
|
65 |
uint32_t ret = 0;
|
|
66 |
uint32_t cpuid_1_edx;
|
|
67 |
|
|
68 |
if (!kvm_check_extension(env->kvm_state, KVM_CAP_EXT_CPUID)) {
|
|
69 |
return -1U;
|
|
70 |
}
|
|
71 |
|
|
72 |
max = 1;
|
|
73 |
while ((cpuid = try_get_cpuid(env->kvm_state, max)) == NULL) {
|
|
74 |
max *= 2;
|
|
75 |
}
|
|
76 |
|
|
77 |
for (i = 0; i < cpuid->nent; ++i) {
|
|
78 |
if (cpuid->entries[i].function == function) {
|
|
79 |
switch (reg) {
|
|
80 |
case R_EAX:
|
|
81 |
ret = cpuid->entries[i].eax;
|
|
82 |
break;
|
|
83 |
case R_EBX:
|
|
84 |
ret = cpuid->entries[i].ebx;
|
|
85 |
break;
|
|
86 |
case R_ECX:
|
|
87 |
ret = cpuid->entries[i].ecx;
|
|
88 |
break;
|
|
89 |
case R_EDX:
|
|
90 |
ret = cpuid->entries[i].edx;
|
|
91 |
if (function == 0x80000001) {
|
|
92 |
/* On Intel, kvm returns cpuid according to the Intel spec,
|
|
93 |
* so add missing bits according to the AMD spec:
|
|
94 |
*/
|
|
95 |
cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, R_EDX);
|
|
96 |
ret |= cpuid_1_edx & 0xdfeff7ff;
|
|
97 |
}
|
|
98 |
break;
|
|
99 |
}
|
|
100 |
}
|
|
101 |
}
|
|
102 |
|
|
103 |
qemu_free(cpuid);
|
|
104 |
|
|
105 |
return ret;
|
|
106 |
}
|
|
107 |
|
|
108 |
#else
|
|
109 |
|
|
110 |
uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
|
|
111 |
{
|
|
112 |
return -1U;
|
|
113 |
}
|
|
114 |
|
|
115 |
#endif
|
|
116 |
|
| 37 |
117 |
int kvm_arch_init_vcpu(CPUState *env)
|
| 38 |
118 |
{
|
| 39 |
119 |
struct {
|