From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 21 Aug 2013 23:38:33 +0000 (-0700)
Subject: Merge tag 'stable/for-linus-3.11-rc6-tag' of git://git.kernel.org/pub/scm/linux/kerne... 
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d936d2d452ca1848cc4b397bdfb96d4278b9f934;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

Merge tag 'stable/for-linus-3.11-rc6-tag' of git://git./linux/kernel/git/xen/tip

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
---

d936d2d452ca1848cc4b397bdfb96d4278b9f934
diff --cc arch/arm/xen/enlighten.c
index c9770ba5c7df,05db95d010ae..8a6295c86209
--- a/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/smp.c
index ca92754eb846,34ed6edf85d0..b81c88e51daa
--- a/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;
  }