Merge tag 'stable/for-linus-3.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen features and fixes from David Vrabel:
 "Support PCI devices with multiple MSIs, performance improvement for
  kernel-based backends (by not populated m2p overrides when mapping),
  and assorted minor bug fixes and cleanups"

* tag 'stable/for-linus-3.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/acpi-processor: fix enabling interrupts on syscore_resume
  xen/grant-table: Refactor gnttab_[un]map_refs to avoid m2p_override
  xen: remove XEN_PRIVILEGED_GUEST
  xen: add support for MSI message groups
  xen-pciback: Use pci_enable_msix_exact() instead of pci_enable_msix()
  xen/xenbus: remove unused xenbus_bind_evtchn()
  xen/events: remove unnecessary call to bind_evtchn_to_cpu()
  xen/events: remove the unused resend_irq_on_evtchn()
  drivers:xen-selfballoon:reset 'frontswap_inertia_counter' after frontswap_shrink
  drivers: xen: Include appropriate header file in pcpu.c
  drivers: xen: Mark function as static in platform-pci.c

4 files changed, 16 insertions, 5 deletions

diff --git a/include/xen/events.h b/include/xen/events.h
index c9c85cf84895..8bee7a75e850 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -2,6 +2,9 @@
 #define _XEN_EVENTS_H
 
 #include <linux/interrupt.h>
+#ifdef CONFIG_PCI_MSI
+#include <linux/msi.h>
+#endif
 
 #include <xen/interface/event_channel.h>
 #include <asm/xen/hypercall.h>
@@ -52,7 +55,6 @@ int evtchn_get(unsigned int evtchn);
 void evtchn_put(unsigned int evtchn);
 
 void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
-int resend_irq_on_evtchn(unsigned int irq);
 void rebind_evtchn_irq(int evtchn, int irq);
 
 static inline void notify_remote_via_evtchn(int port)
@@ -102,7 +104,7 @@ int xen_bind_pirq_gsi_to_irq(unsigned gsi,
 int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc);
 /* Bind an PSI pirq to an irq. */
 int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
-			     int pirq, const char *name, domid_t domid);
+			     int pirq, int nvec, const char *name, domid_t domid);
 #endif
 
 /* De-allocates the above mentioned physical interrupt. */
diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h
index 42721d13a106..610dba9b620a 100644
--- a/include/xen/interface/physdev.h
+++ b/include/xen/interface/physdev.h
@@ -131,6 +131,7 @@ struct physdev_irq {
 #define MAP_PIRQ_TYPE_GSI		0x1
 #define MAP_PIRQ_TYPE_UNKNOWN		0x2
 #define MAP_PIRQ_TYPE_MSI_SEG		0x3
+#define MAP_PIRQ_TYPE_MULTI_MSI		0x4
 
 #define PHYSDEVOP_map_pirq		13
 struct physdev_map_pirq {
@@ -141,11 +142,16 @@ struct physdev_map_pirq {
     int index;
     /* IN or OUT */
     int pirq;
-    /* IN - high 16 bits hold segment for MAP_PIRQ_TYPE_MSI_SEG */
+    /* IN - high 16 bits hold segment for ..._MSI_SEG and ..._MULTI_MSI */
     int bus;
     /* IN */
     int devfn;
-    /* IN */
+    /* IN
+     * - For MSI-X contains entry number.
+     * - For MSI with ..._MULTI_MSI contains number of vectors.
+     * OUT (..._MULTI_MSI only)
+     * - Number of vectors allocated.
+     */
     int entry_nr;
     /* IN */
     uint64_t table_base;
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index fb2ea8f26552..2cf47175b12b 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -2,6 +2,7 @@
 #define INCLUDE_XEN_OPS_H
 
 #include <linux/percpu.h>
+#include <linux/notifier.h>
 #include <asm/xen/interface.h>
 
 DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
@@ -16,6 +17,9 @@ void xen_mm_unpin_all(void);
 void xen_timer_resume(void);
 void xen_arch_resume(void);
 
+void xen_resume_notifier_register(struct notifier_block *nb);
+void xen_resume_notifier_unregister(struct notifier_block *nb);
+
 int xen_setup_shutdown_event(void);
 
 extern unsigned long *xen_contiguous_bitmap;
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index 569c07f2e344..0324c6d340c1 100644
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -207,7 +207,6 @@ int xenbus_unmap_ring(struct xenbus_device *dev,
 		      grant_handle_t handle, void *vaddr);
 
 int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port);
-int xenbus_bind_evtchn(struct xenbus_device *dev, int remote_port, int *port);
 int xenbus_free_evtchn(struct xenbus_device *dev, int port);
 
 enum xenbus_state xenbus_read_driver_state(const char *path);