1 files changed, 24 insertions, 11 deletions

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 394d177d721b..df8a300dfe6c 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -75,7 +75,7 @@ static inline void default_inquire_remote_apic(int apicid)
 #define setup_secondary_clock setup_secondary_APIC_clock
 #endif
 
-#ifdef CONFIG_X86_VSMP
+#ifdef CONFIG_X86_64
 extern int is_vsmp_box(void);
 #else
 static inline int is_vsmp_box(void)
@@ -108,6 +108,16 @@ extern void native_apic_icr_write(u32 low, u32 id);
 extern u64 native_apic_icr_read(void);
 
 #ifdef CONFIG_X86_X2APIC
+/*
+ * Make previous memory operations globally visible before
+ * sending the IPI through x2apic wrmsr. We need a serializing instruction or
+ * mfence for this.
+ */
+static inline void x2apic_wrmsr_fence(void)
+{
+        asm volatile("mfence" : : : "memory");
+}
+
 static inline void native_apic_msr_write(u32 reg, u32 v)
 {
         if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
@@ -184,6 +194,9 @@ static inline int x2apic_enabled(void)
 {
         return 0;
 }
+
+#define x2apic  0
+
 #endif
 
 extern int get_physical_broadcast(void);
@@ -476,10 +489,19 @@ static inline int default_apic_id_registered(void)
         return physid_isset(read_apic_id(), phys_cpu_present_map);
 }
 
+static inline int default_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+        return cpuid_apic >> index_msb;
+}
+
+extern int default_apicid_to_node(int logical_apicid);
+
+#endif
+
 static inline unsigned int
 default_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
-        return cpumask_bits(cpumask)[0];
+        return cpumask_bits(cpumask)[0] & APIC_ALL_CPUS;
 }
 
 static inline unsigned int
@@ -493,15 +515,6 @@ default_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
         return (unsigned int)(mask1 & mask2 & mask3);
 }
 
-static inline int default_phys_pkg_id(int cpuid_apic, int index_msb)
-{
-        return cpuid_apic >> index_msb;
-}
-
-extern int default_apicid_to_node(int logical_apicid);
-
-#endif
-
 static inline unsigned long default_check_apicid_used(physid_mask_t bitmap, int apicid)
 {
         return physid_isset(apicid, bitmap);