summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/apic.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/apic.h')
-rw-r--r--include/asm-x86/apic.h16
1 files changed, 14 insertions, 2 deletions
diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index d76a0839abe9..ef1d72dbdfe0 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -40,8 +40,6 @@ extern void generic_apic_probe(void);
extern unsigned int apic_verbosity;
extern int local_apic_timer_c2_ok;
-extern int ioapic_force;
-
extern int disable_apic;
/*
* Basic functions accessing APICs.
@@ -100,6 +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 {
OpenPOWER on IntegriCloud