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i386: Don't set CPUClass::cpu_def on "max" model 

Host CPUID info is used by the "max" CPU model only in KVM mode.
Move the initialization of CPUID data for "max" from class_init
to instance_init, and don't set CPUClass::cpu_def for "max".

Message-Id: <20170222183919.11928-4-ehabkost@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Tested-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2017-02-22 15:39:19 -03:00
parent 6900d1cc8a
commit 0bacd8b304
2 changed files with 24 additions and 25 deletions
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4
target/i386/cpu-qom.h
View File

@ -60,7 +60,9 @@ typedef struct X86CPUClass {
CPUClass parent_class;
/*< public >*/
/* Should be eventually replaced by subclass-specific property defaults. */
/* CPU definition, automatically loaded by instance_init if not NULL.
* Should be eventually replaced by subclass-specific property defaults.
*/
X86CPUDefinition *cpu_def;
bool kvm_required;

45
target/i386/cpu.c
View File

@ -1531,47 +1531,27 @@ static int cpu_x86_fill_model_id(char *str)
return 0;
}
static X86CPUDefinition host_cpudef;
static Property max_x86_cpu_properties[] = {
DEFINE_PROP_BOOL("migratable", X86CPU, migratable, true),
DEFINE_PROP_BOOL("host-cache-info", X86CPU, cache_info_passthrough, false),
DEFINE_PROP_END_OF_LIST()
};
/* class_init for the "max" CPU model
*
* This function may be called before KVM is initialized.
*/
static void max_x86_cpu_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
X86CPUClass *xcc = X86_CPU_CLASS(oc);
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
xcc->ordering = 9;
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(host_cpudef.vendor, ebx, edx, ecx);
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
host_cpudef.family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
host_cpudef.model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
host_cpudef.stepping = eax & 0x0F;
cpu_x86_fill_model_id(host_cpudef.model_id);
xcc->cpu_def = &host_cpudef;
xcc->model_description =
"Enables all features supported by the accelerator in the current host";
/* level, xlevel, xlevel2, and the feature words are initialized on
* instance_init, because they require KVM to be initialized.
*/
dc->props = max_x86_cpu_properties;
}
static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp);
static void max_x86_cpu_initfn(Object *obj)
{
X86CPU *cpu = X86_CPU(obj);
@ -1584,6 +1564,21 @@ static void max_x86_cpu_initfn(Object *obj)
cpu->max_features = true;
if (kvm_enabled()) {
X86CPUDefinition host_cpudef = { };
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(host_cpudef.vendor, ebx, edx, ecx);
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
host_cpudef.family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
host_cpudef.model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
host_cpudef.stepping = eax & 0x0F;
cpu_x86_fill_model_id(host_cpudef.model_id);
x86_cpu_load_def(cpu, &host_cpudef, &error_abort);
env->cpuid_min_level =
kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
env->cpuid_min_xlevel =
@ -2185,7 +2180,7 @@ static void x86_cpu_list_entry(gpointer data, gpointer user_data)
CPUListState *s = user_data;
char *name = x86_cpu_class_get_model_name(cc);
const char *desc = cc->model_description;
if (!desc) {
if (!desc && cc->cpu_def) {
desc = cc->cpu_def->model_id;
}
@ -3683,7 +3678,9 @@ static void x86_cpu_initfn(Object *obj)
object_property_add_alias(obj, "sse4_1", obj, "sse4.1", &error_abort);
object_property_add_alias(obj, "sse4_2", obj, "sse4.2", &error_abort);
x86_cpu_load_def(cpu, xcc->cpu_def, &error_abort);
if (xcc->cpu_def) {
x86_cpu_load_def(cpu, xcc->cpu_def, &error_abort);
}
}
static int64_t x86_cpu_get_arch_id(CPUState *cs)