x86/apic: Wrap apic->native_eoi() into a helper

Prepare for converting the hotpath APIC callbacks to static calls.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)

Author: KAGA-KOKO

arch/x86/include/asm/apic.h

@@ -359,6 +359,11 @@ static inline void apic_eoi(void)
 	apic->eoi();
 }
 
+static inline void apic_native_eoi(void)
+{
+	apic->native_eoi();
+}
+
 static inline u64 apic_icr_read(void)
 {
 	return apic->icr_read();
@@ -397,6 +402,7 @@ static inline void apic_icr_write(u32 low, u32 high) { }
 static inline void apic_wait_icr_idle(void) { }
 static inline u32 safe_apic_wait_icr_idle(void) { return 0; }
 static inline void apic_set_eoi_cb(void (*eoi)(void)) {}
+static inline void apic_native_eoi(void) { WARN_ON_ONCE(1); }
 
 #endif /* CONFIG_X86_LOCAL_APIC */
 

arch/x86/kernel/kvm.c

@@ -343,7 +343,7 @@ static notrace void kvm_guest_apic_eoi_write(void)
 	 */
 	if (__test_and_clear_bit(KVM_PV_EOI_BIT, this_cpu_ptr(&kvm_apic_eoi)))
 		return;
-	apic->native_eoi();
+	apic_native_eoi();
 }
 
 static void kvm_guest_cpu_init(void)