Merge tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kerne...

Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
 - On ARM did not have balanced calls to get/put_cpu.
 - Fix to make tboot + Xen + Linux correctly.
 - Fix events VCPU binding issues.
 - Fix a vCPU online race where IPIs are sent to not-yet-online vCPU.

* tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/smp: initialize IPI vectors before marking CPU online
  xen/events: mask events when changing their VCPU binding
  xen/events: initialize local per-cpu mask for all possible events
  x86/xen: do not identity map UNUSABLE regions in the machine E820
  xen/arm: missing put_cpu in xen_percpu_init

diff --cc arch/arm/xen/enlighten.c
index c9770ba,05db95d..8a6295c
--- 1/arch/arm/xen/enlighten.c
--- 2/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@@ -170,9 -170,10 +170,10 @@@ static void __init xen_percpu_init(voi
        per_cpu(xen_vcpu, cpu) = vcpup;
  
        enable_percpu_irq(xen_events_irq, 0);
+       put_cpu();
  }
  
 -static void xen_restart(char str, const char *cmd)
 +static void xen_restart(enum reboot_mode reboot_mode, const char *cmd)
  {
        struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
        int rc;

diff --cc arch/x86/xen/setup.c
Simple merge

diff --cc arch/x86/xen/smp.c
index ca92754,34ed6ed..b81c88e
--- 1/arch/x86/xen/smp.c
--- 2/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@@ -691,11 -683,18 +691,18 @@@ static void __init xen_hvm_smp_prepare_
        xen_init_lock_cpu(0);
  }
  
 -static int __cpuinit xen_hvm_cpu_up(unsigned int cpu, struct task_struct *tidle)
 +static int xen_hvm_cpu_up(unsigned int cpu, struct task_struct *tidle)
  {
        int rc;
-       rc = native_cpu_up(cpu, tidle);
-       WARN_ON (xen_smp_intr_init(cpu));
+       /*
+        * xen_smp_intr_init() needs to run before native_cpu_up()
+        * so that IPI vectors are set up on the booting CPU before
+        * it is marked online in native_cpu_up().
+       */
+       rc = xen_smp_intr_init(cpu);
+       WARN_ON(rc);
+       if (!rc)
+               rc =  native_cpu_up(cpu, tidle);
        return rc;
  }