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Commit 224394ad authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'stable/for-linus-3.8-rc0-bugfix-tag' of... 

Merge tag 'stable/for-linus-3.8-rc0-bugfix-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen bugfixes from Konrad Rzeszutek Wilk:
 "Two fixes.  One of them is caused by the recent change introduced by
  the 'x86-bsp-hotplug-for-linus' tip tree that inhibited bootup (old
  function does not do what it used to do).  The other one is just a
  vanilla bug.

   - Fix to bootup regression introduced by 'x86-bsp-hotplug-for-linus'
     tip branch.
   - Fix to vcpu hotplug code."

* tag 'stable/for-linus-3.8-rc0-bugfix-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/vcpu: Fix vcpu restore path.
  xen: Add EVTCHNOP_reset in Xen interface header files.
  xen/smp: Use smp_store_boot_cpu_info() to store cpu info for BSP during boot time.
parents ae664dba 9d328a94

arch/x86/xen/enlighten.c

+4 −3
Original line number Diff line number Diff line
@@ -193,10 +193,11 @@ void xen_vcpu_restore(void) 
{

	int cpu;



	for_each_online_cpu(cpu) {

	for_each_possible_cpu(cpu) {

		bool other_cpu = (cpu != smp_processor_id());

		bool is_up = HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL);



		if (other_cpu &&

		if (other_cpu && is_up &&

		    HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))

			BUG();
@@ -205,7 +206,7 @@ void xen_vcpu_restore(void) 
		if (have_vcpu_info_placement)

			xen_vcpu_setup(cpu);



		if (other_cpu &&

		if (other_cpu && is_up &&

		    HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))

			BUG();

	}

arch/x86/xen/smp.c

+1 −1
Original line number Diff line number Diff line
@@ -254,7 +254,7 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus) 
	}

	xen_init_lock_cpu(0);



	smp_store_cpu_info(0);

	smp_store_boot_cpu_info();

	cpu_data(0).x86_max_cores = 1;



	for_each_possible_cpu(i) {

include/xen/interface/event_channel.h

+13 −0
Original line number Diff line number Diff line
@@ -177,6 +177,19 @@ struct evtchn_unmask { 
	evtchn_port_t port;

};



/*

 * EVTCHNOP_reset: Close all event channels associated with specified domain.

 * NOTES:

 *  1. <dom> may be specified as DOMID_SELF.

 *  2. Only a sufficiently-privileged domain may specify other than DOMID_SELF.

 */

#define EVTCHNOP_reset		 10

struct evtchn_reset {

	/* IN parameters. */

	domid_t dom;

};

typedef struct evtchn_reset evtchn_reset_t;



struct evtchn_op {

	uint32_t cmd; /* EVTCHNOP_* */

	union {