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target-i386: Use uint32_t for X86CPU.apic_id

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Redo 9886e834 (target-i386: Require APIC ID to be explicitly set before
CPU realize) in another way that doesn't use int64_t to detect
if apic-id property has been set.

Use the fact that 0xFFFFFFFF is the broadcast
value that a CPU can't have and set default
uint32_t apic_id to it instead of using int64_t.

Later uint32_t apic_id will be used to drop custom
property setter/getter in favor of static property.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2016-07-06 08:20:37 +02:00 committed by Eduardo Habkost
parent fcc35e7cca
commit d9c84f1969
2 changed files with 8 additions and 3 deletions
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4
target-i386/cpu.c
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@ -2946,7 +2946,7 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
goto out;
}
if (cpu->apic_id < 0) {
if (cpu->apic_id == UNASSIGNED_APIC_ID) {
error_setg(errp, "apic-id property was not initialized properly");
return;
}
@ -3254,7 +3254,7 @@ static void x86_cpu_initfn(Object *obj)
#ifndef CONFIG_USER_ONLY
/* Any code creating new X86CPU objects have to set apic-id explicitly */
cpu->apic_id = -1;
cpu->apic_id = UNASSIGNED_APIC_ID;
#endif
for (w = 0; w < FEATURE_WORDS; w++) {

7
target-i386/cpu.h
View File

@ -845,6 +845,11 @@ typedef struct {
#define NB_OPMASK_REGS 8
/* CPU can't have 0xFFFFFFFF APIC ID, use that value to distinguish
* that APIC ID hasn't been set yet
*/
#define UNASSIGNED_APIC_ID 0xFFFFFFFF
typedef union X86LegacyXSaveArea {
struct {
uint16_t fcw;
@ -1174,7 +1179,7 @@ struct X86CPU {
bool expose_kvm;
bool migratable;
bool host_features;
int64_t apic_id;
uint32_t apic_id;
/* if true the CPUID code directly forward host cache leaves to the guest */
bool cache_info_passthrough;