Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

  and branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm

* 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
  xen: register xen pci notifier
  xen: initialize cpu masks for pv guests in xen_smp_init
  xen: add a missing #include to arch/x86/pci/xen.c
  xen: mask the MTRR feature from the cpuid
  xen: make hvc_xen console work for dom0.
  xen: add the direct mapping area for ISA bus access
  xen: Initialize xenbus for dom0.
  xen: use vcpu_ops to setup cpu masks
  xen: map a dummy page for local apic and ioapic in xen_set_fixmap
  xen: remap MSIs into pirqs when running as initial domain
  xen: remap GSIs as pirqs when running as initial domain
  xen: introduce XEN_DOM0 as a silent option
  xen: map MSIs into pirqs
  xen: support GSI -> pirq remapping in PV on HVM guests
  xen: add xen hvm acpi_register_gsi variant
  acpi: use indirect call to register gsi in different modes
  xen: implement xen_hvm_register_pirq
  xen: get the maximum number of pirqs from xen
  xen: support pirq != irq

* 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (27 commits)
  X86/PCI: Remove the dependency on isapnp_disable.
  xen: Update Makefile with CONFIG_BLOCK dependency for biomerge.c
  MAINTAINERS: Add myself to the Xen Hypervisor Interface and remove Chris Wright.
  x86: xen: Sanitse irq handling (part two)
  swiotlb-xen: On x86-32 builts, select SWIOTLB instead of depending on it.
  MAINTAINERS: Add myself for Xen PCI and Xen SWIOTLB maintainer.
  xen/pci: Request ACS when Xen-SWIOTLB is activated.
  xen-pcifront: Xen PCI frontend driver.
  xenbus: prevent warnings on unhandled enumeration values
  xenbus: Xen paravirtualised PCI hotplug support.
  xen/x86/PCI: Add support for the Xen PCI subsystem
  x86: Introduce x86_msi_ops
  msi: Introduce default_[teardown|setup]_msi_irqs with fallback.
  x86/PCI: Export pci_walk_bus function.
  x86/PCI: make sure _PAGE_IOMAP it set on pci mappings
  x86/PCI: Clean up pci_cache_line_size
  xen: fix shared irq device passthrough
  xen: Provide a variant of xen_poll_irq with timeout.
  xen: Find an unbound irq number in reverse order (high to low).
  xen: statically initialize cpu_evtchn_mask_p
  ...

Fix up trivial conflicts in drivers/pci/Makefile

2 files changed, 30 insertions, 1 deletions

diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
index 7e49527189b6..cdacf923e073 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -50,6 +50,8 @@ const char *xenbus_strstate(enum xenbus_state state)
                 [ XenbusStateConnected    ] = "Connected",
                 [ XenbusStateClosing      ] = "Closing",
                 [ XenbusStateClosed       ] = "Closed",
+                [XenbusStateReconfiguring] = "Reconfiguring",
+                [XenbusStateReconfigured] = "Reconfigured",
         };
         return (state < ARRAY_SIZE(name)) ? name[state] : "INVALID";
 }
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 132939f36020..deb9c4ba3a93 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -803,6 +803,7 @@ device_initcall(xenbus_probe_initcall);
 static int __init xenbus_init(void)
 {
         int err = 0;
+        unsigned long page = 0;
 
         DPRINTK("");
 
@@ -823,7 +824,31 @@ static int __init xenbus_init(void)
          * Domain0 doesn't have a store_evtchn or store_mfn yet.
          */
         if (xen_initial_domain()) {
-                /* dom0 not yet supported */
+                struct evtchn_alloc_unbound alloc_unbound;
+
+                /* Allocate Xenstore page */
+                page = get_zeroed_page(GFP_KERNEL);
+                if (!page)
+                        goto out_error;
+
+                xen_store_mfn = xen_start_info->store_mfn =
+                        pfn_to_mfn(virt_to_phys((void *)page) >>
+                                   PAGE_SHIFT);
+
+                /* Next allocate a local port which xenstored can bind to */
+                alloc_unbound.dom        = DOMID_SELF;
+                alloc_unbound.remote_dom = 0;
+
+                err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,
+                                                  &alloc_unbound);
+                if (err == -ENOSYS)
+                        goto out_error;
+
+                BUG_ON(err);
+                xen_store_evtchn = xen_start_info->store_evtchn =
+                        alloc_unbound.port;
+
+                xen_store_interface = mfn_to_virt(xen_store_mfn);
         } else {
                 if (xen_hvm_domain()) {
                         uint64_t v = 0;
@@ -869,6 +894,8 @@ static int __init xenbus_init(void)
         bus_unregister(&xenbus_frontend.bus);
 
   out_error:
+        if (page != 0)
+                free_page(page);
         return err;
 }