diff options
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/apic.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h index 2d970f6bc2a1..ef1d72dbdfe0 100644 --- a/include/asm-x86/apic.h +++ b/include/asm-x86/apic.h @@ -98,6 +98,20 @@ extern void check_x2apic(void); extern void enable_x2apic(void); extern void enable_IR_x2apic(void); extern void x2apic_icr_write(u32 low, u32 id); +static inline int x2apic_enabled(void) +{ + int msr, msr2; + + if (!cpu_has_x2apic) + return 0; + + rdmsr(MSR_IA32_APICBASE, msr, msr2); + if (msr & X2APIC_ENABLE) + return 1; + return 0; +} +#else +#define x2apic_enabled() 0 #endif struct apic_ops { |