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Bugfixes:

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* Fix to bootup regression introduced by 'x86-bsp-hotplug-for-linus' tip branch.
  * Fix to vcpu hotplug code.
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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.
This commit is contained in:
Linus Torvalds 2012-12-18 12:26:54 -08:00
commit 224394ad75
3 changed files with 18 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/xen/enlighten.c
View File

@ -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();
}

2
arch/x86/xen/smp.c
View File

@ -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) {

13
include/xen/interface/event_channel.h
View File

@ -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 {