3 files changed, 49 insertions, 10 deletions

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 50dad44fb54..0c45df20e2b 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -783,11 +783,11 @@ static void lguest_wbinvd(void)
  * code qualifies for Advanced.  It will also never interrupt anything.  It
  * does, however, allow us to get through the Linux boot code. */
 #ifdef CONFIG_X86_LOCAL_APIC
-static void lguest_apic_write(unsigned long reg, u32 v)
+static void lguest_apic_write(u32 reg, u32 v)
 {
 }
 
-static u32 lguest_apic_read(unsigned long reg)
+static u32 lguest_apic_read(u32 reg)
 {
         return 0;
 }
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index dcd4e51f2f1..54e25566753 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -548,16 +548,45 @@ static void xen_io_delay(void)
 }
 
 #ifdef CONFIG_X86_LOCAL_APIC
-static u32 xen_apic_read(unsigned long reg)
+static u32 xen_apic_read(u32 reg)
 {
         return 0;
 }
 
-static void xen_apic_write(unsigned long reg, u32 val)
+static void xen_apic_write(u32 reg, u32 val)
 {
         /* Warn to see if there's any stray references */
         WARN_ON(1);
 }
+
+#ifdef CONFIG_X86_64
+static u64 xen_apic_icr_read(void)
+{
+        return 0;
+}
+
+static void xen_apic_icr_write(u32 low, u32 id)
+{
+        /* Warn to see if there's any stray references */
+        WARN_ON(1);
+}
+
+static void xen_apic_wait_icr_idle(void)
+{
+        return;
+}
+
+static struct apic_ops xen_basic_apic_ops = {
+        .read = xen_apic_read,
+        .write = xen_apic_write,
+        .write_atomic = xen_apic_write,
+        .icr_read = xen_apic_icr_read,
+        .icr_write = xen_apic_icr_write,
+        .wait_icr_idle = xen_apic_wait_icr_idle,
+        .safe_wait_icr_idle = xen_apic_wait_icr_idle,
+};
+#endif
+
 #endif
 
 static void xen_flush_tlb(void)
@@ -1130,9 +1159,11 @@ static const struct pv_irq_ops xen_irq_ops __initdata = {
 
 static const struct pv_apic_ops xen_apic_ops __initdata = {
 #ifdef CONFIG_X86_LOCAL_APIC
+#ifndef CONFIG_X86_64
         .apic_write = xen_apic_write,
         .apic_write_atomic = xen_apic_write,
         .apic_read = xen_apic_read,
+#endif
         .setup_boot_clock = paravirt_nop,
         .setup_secondary_clock = paravirt_nop,
         .startup_ipi_hook = paravirt_nop,
@@ -1291,6 +1322,12 @@ asmlinkage void __init xen_start_kernel(void)
         pv_irq_ops = xen_irq_ops;
         pv_apic_ops = xen_apic_ops;
         pv_mmu_ops = xen_mmu_ops;
+#ifdef CONFIG_X86_64
+        /*
+         * for 64bit, set up the basic apic ops aswell.
+         */
+        apic_ops = &xen_basic_apic_ops;
+#endif
 
         if (xen_feature(XENFEAT_mmu_pt_update_preserve_ad)) {
                 pv_mmu_ops.ptep_modify_prot_start = xen_ptep_modify_prot_start;
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 10adac02e6d..5e34d26aa3b 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -200,13 +200,15 @@ struct pv_irq_ops {
 
 struct pv_apic_ops {
 #ifdef CONFIG_X86_LOCAL_APIC
+#ifndef CONFIG_X86_64
         /*
          * Direct APIC operations, principally for VMI.  Ideally
          * these shouldn't be in this interface.
          */
-        void (*apic_write)(unsigned long reg, u32 v);
-        void (*apic_write_atomic)(unsigned long reg, u32 v);
-        u32 (*apic_read)(unsigned long reg);
+        void (*apic_write)(u32 reg, u32 v);
+        void (*apic_write_atomic)(u32 reg, u32 v);
+        u32 (*apic_read)(u32 reg);
+#endif
         void (*setup_boot_clock)(void);
         void (*setup_secondary_clock)(void);
 
@@ -892,17 +894,17 @@ static inline void slow_down_io(void)
  * Basic functions accessing APICs.
  */
 #ifndef CONFIG_X86_64
-static inline void apic_write(unsigned long reg, u32 v)
+static inline void apic_write(u32 reg, u32 v)
 {
         PVOP_VCALL2(pv_apic_ops.apic_write, reg, v);
 }
 
-static inline void apic_write_atomic(unsigned long reg, u32 v)
+static inline void apic_write_atomic(u32 reg, u32 v)
 {
         PVOP_VCALL2(pv_apic_ops.apic_write_atomic, reg, v);
 }
 
-static inline u32 apic_read(unsigned long reg)
+static inline u32 apic_read(u32 reg)
 {
         return PVOP_CALL1(unsigned long, pv_apic_ops.apic_read, reg);
 }