Merge branch 'x86/apic' into x86/x2apic

Conflicts:

	arch/x86/kernel/paravirt.c
	arch/x86/kernel/smpboot.c
	arch/x86/kernel/vmi_32.c
	arch/x86/lguest/boot.c
	arch/x86/xen/enlighten.c
	include/asm-x86/apic.h
	include/asm-x86/paravirt.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 20 deletions

diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index fcd2f01277b6..300b65e57240 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -3,6 +3,8 @@
 
 #include <linux/pm.h>
 #include <linux/delay.h>
+
+#include <asm/alternative.h>
 #include <asm/fixmap.h>
 #include <asm/apicdef.h>
 #include <asm/processor.h>
@@ -12,7 +14,7 @@
 
 #define ARCH_APICTIMER_STOPS_ON_C3      1
 
-#define Dprintk(x...)
+#define Dprintk printk
 
 /*
  * Debugging macros
@@ -37,7 +39,7 @@ extern void generic_apic_probe(void);
 
 #ifdef CONFIG_X86_LOCAL_APIC
 
-extern int apic_verbosity;
+extern unsigned int apic_verbosity;
 extern int local_apic_timer_c2_ok;
 
 extern int ioapic_force;
@@ -57,12 +59,11 @@ extern int is_vsmp_box(void);
 
 static inline void native_apic_mem_write(u32 reg, u32 v)
 {
-        *((volatile u32 *)(APIC_BASE + reg)) = v;
-}
+        volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
 
-static inline void native_apic_mem_write_atomic(u32 reg, u32 v)
-{
-        (void)xchg((u32 *)(APIC_BASE + reg), v);
+        alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP,
+                       ASM_OUTPUT2("=r" (v), "=m" (*addr)),
+                       ASM_OUTPUT2("0" (v), "m" (*addr)));
 }
 
 static inline u32 native_apic_mem_read(u32 reg)
@@ -101,7 +102,6 @@ extern void x2apic_icr_write(u32 low, u32 id);
 struct apic_ops {
         u32 (*read)(u32 reg);
         void (*write)(u32 reg, u32 v);
-        void (*write_atomic)(u32 reg, u32 v);
         u64 (*icr_read)(void);
         void (*icr_write)(u32 low, u32 high);
         void (*wait_icr_idle)(void);
@@ -112,7 +112,6 @@ extern struct apic_ops *apic_ops;
 
 #define apic_read (apic_ops->read)
 #define apic_write (apic_ops->write)
-#define apic_write_atomic (apic_ops->write_atomic)
 #define apic_icr_read (apic_ops->icr_read)
 #define apic_icr_write (apic_ops->icr_write)
 #define apic_wait_icr_idle (apic_ops->wait_icr_idle)
@@ -120,16 +119,6 @@ extern struct apic_ops *apic_ops;
 
 extern int get_physical_broadcast(void);
 
-#ifdef CONFIG_X86_GOOD_APIC
-# define FORCE_READ_AROUND_WRITE 0
-# define apic_read_around(x)
-# define apic_write_around(x, y) apic_write((x), (y))
-#else
-# define FORCE_READ_AROUND_WRITE 1
-# define apic_read_around(x) apic_read(x)
-# define apic_write_around(x, y) apic_write_atomic((x), (y))
-#endif
-
 #ifdef CONFIG_X86_64
 static inline void ack_x2APIC_irq(void)
 {
@@ -150,7 +139,7 @@ static inline void ack_APIC_irq(void)
 
         /* Docs say use 0 for future compatibility */
 #ifdef CONFIG_X86_32
-        apic_write_around(APIC_EOI, 0);
+        apic_write(APIC_EOI, 0);
 #else
         native_apic_mem_write(APIC_EOI, 0);
 #endif