Add arch_has_extapic() helper function to check if a CPU supports AMD's extended APIC feature. This will be used in subsequent patches to conditionally enable extended APIC register handling.
Signed-off-by: Manali Shukla <[email protected]> --- include/hw/i386/apic_internal.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h index 429278da61..865b7ed567 100644 --- a/include/hw/i386/apic_internal.h +++ b/include/hw/i386/apic_internal.h @@ -212,6 +212,13 @@ void vapic_report_tpr_access(DeviceState *dev, CPUState *cpu, target_ulong ip, int apic_get_ppr(APICCommonState *s); uint32_t apic_get_current_count(APICCommonState *s); +static inline bool arch_has_extapic(X86CPU *cpu) +{ + CPUX86State *env = &cpu->env; + + return !!(env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_EXTAPIC); +} + static inline void apic_set_bit(uint32_t *tab, int index) { int i, mask; -- 2.43.0
