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apic: add global apic_get_class()

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Every configuration has only up to one APIC class and we'll be extending
the class with a function that can be called without an instanced
object, so a direct access to the class is convenient.

This patch will break compilation if some code uses apic_get_class()
with CONFIG_USER_ONLY.

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Radim Krčmář 2016-10-10 17:28:42 +02:00 committed by Eduardo Habkost
parent 8ca30e8673
commit 2f114315dc
3 changed files with 13 additions and 3 deletions
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1
hw/intc/apic_common.c
View File

@ -18,6 +18,7 @@
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"

2
include/hw/i386/apic_internal.h
View File

@ -222,4 +222,6 @@ static inline int apic_get_bit(uint32_t *tab, int index)
return !!(tab[i] & mask);
}
APICCommonClass *apic_get_class(void);
#endif /* QEMU_APIC_INTERNAL_H */

13
target-i386/cpu.c
View File

@ -2845,9 +2845,8 @@ static void mce_init(X86CPU *cpu)
}
#ifndef CONFIG_USER_ONLY
static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
APICCommonClass *apic_get_class(void)
{
APICCommonState *apic;
const char *apic_type = "apic";
if (kvm_apic_in_kernel()) {
@ -2856,7 +2855,15 @@ static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
apic_type = "xen-apic";
}
cpu->apic_state = DEVICE(object_new(apic_type));
return APIC_COMMON_CLASS(object_class_by_name(apic_type));
}
static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
{
APICCommonState *apic;
ObjectClass *apic_class = OBJECT_CLASS(apic_get_class());
cpu->apic_state = DEVICE(object_new(object_class_get_name(apic_class)));
object_property_add_child(OBJECT(cpu), "lapic",
OBJECT(cpu->apic_state), &error_abort);