Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86/apic changes from Ingo Molnar:
 "Most of the changes are about helping virtualized guest kernels
  achieve better performance."

Fix up trivial conflicts with the iommu updates to arch/x86/kernel/apic/io_apic.c

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Implement EIO micro-optimization
  x86/apic: Add apic->eoi_write() callback
  x86/apic: Use symbolic APIC_EOI_ACK
  x86/apic: Fix typo EIO_ACK -> EOI_ACK and document it
  x86/xen/apic: Add missing #include <xen/xen.h>
  x86/apic: Only compile local function if used with !CONFIG_GENERIC_PENDING_IRQ
  x86/apic: Fix UP boot crash
  x86: Conditionally update time when ack-ing pending irqs
  xen/apic: implement io apic read with hypercall
  Revert "xen/x86: Workaround 'x86/ioapic: Add register level checks to detect bogus io-apic entries'"
  xen/x86: Implement x86_apic_ops
  x86/apic: Replace io_apic_ops with x86_io_apic_ops.

1 files changed, 23 insertions, 12 deletions

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 2c4943de515..73d8c5398ea 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -5,7 +5,7 @@
 #include <asm/mpspec.h>
 #include <asm/apicdef.h>
 #include <asm/irq_vectors.h>
-
+#include <asm/x86_init.h>
 /*
  * Intel IO-APIC support for SMP and UP systems.
  *
@@ -21,15 +21,6 @@
 #define IO_APIC_REDIR_LEVEL_TRIGGER	(1 << 15)
 #define IO_APIC_REDIR_MASKED		(1 << 16)
 
-struct io_apic_ops {
-	void		(*init)  (void);
-	unsigned int	(*read)  (unsigned int apic, unsigned int reg);
-	void		(*write) (unsigned int apic, unsigned int reg, unsigned int value);
-	void		(*modify)(unsigned int apic, unsigned int reg, unsigned int value);
-};
-
-void __init set_io_apic_ops(const struct io_apic_ops *);
-
 /*
  * The structure of the IO-APIC:
  */
@@ -156,7 +147,6 @@ struct io_apic_irq_attr;
 extern int io_apic_set_pci_routing(struct device *dev, int irq,
 		 struct io_apic_irq_attr *irq_attr);
 void setup_IO_APIC_irq_extra(u32 gsi);
-extern void ioapic_and_gsi_init(void);
 extern void ioapic_insert_resources(void);
 
 int io_apic_setup_irq_pin_once(unsigned int irq, int node, struct io_apic_irq_attr *attr);
@@ -185,12 +175,29 @@ extern void mp_save_irq(struct mpc_intsrc *m);
 
 extern void disable_ioapic_support(void);
 
+extern void __init native_io_apic_init_mappings(void);
+extern unsigned int native_io_apic_read(unsigned int apic, unsigned int reg);
+extern void native_io_apic_write(unsigned int apic, unsigned int reg, unsigned int val);
+extern void native_io_apic_modify(unsigned int apic, unsigned int reg, unsigned int val);
+
+static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
+{
+	return x86_io_apic_ops.read(apic, reg);
+}
+
+static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
+{
+	x86_io_apic_ops.write(apic, reg, value);
+}
+static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
+{
+	x86_io_apic_ops.modify(apic, reg, value);
+}
 #else  /* !CONFIG_X86_IO_APIC */
 
 #define io_apic_assign_pci_irqs 0
 #define setup_ioapic_ids_from_mpc x86_init_noop
 static const int timer_through_8259 = 0;
-static inline void ioapic_and_gsi_init(void) { }
 static inline void ioapic_insert_resources(void) { }
 #define gsi_top (NR_IRQS_LEGACY)
 static inline int mp_find_ioapic(u32 gsi) { return 0; }
@@ -212,6 +219,10 @@ static inline int restore_ioapic_entries(void)
 
 static inline void mp_save_irq(struct mpc_intsrc *m) { };
 static inline void disable_ioapic_support(void) { }
+#define native_io_apic_init_mappings	NULL
+#define native_io_apic_read		NULL
+#define native_io_apic_write		NULL
+#define native_io_apic_modify		NULL
 #endif
 
 #endif /* _ASM_X86_IO_APIC_H */