xen: restore runstate_info even if !have_vcpu_info_placement
Even if have_vcpu_info_placement is not set, we still need to set up
the runstate area on each resumed vcpu.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index cb61f77..a7b49f9 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -138,26 +138,23 @@
*/
void xen_vcpu_restore(void)
{
- if (have_vcpu_info_placement) {
- int cpu;
+ int cpu;
- for_each_online_cpu(cpu) {
- bool other_cpu = (cpu != smp_processor_id());
+ for_each_online_cpu(cpu) {
+ bool other_cpu = (cpu != smp_processor_id());
- if (other_cpu &&
- HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
- BUG();
+ if (other_cpu &&
+ HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
+ BUG();
- xen_setup_runstate_info(cpu);
+ xen_setup_runstate_info(cpu);
+ if (have_vcpu_info_placement)
xen_vcpu_setup(cpu);
- if (other_cpu &&
- HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
- BUG();
- }
-
- BUG_ON(!have_vcpu_info_placement);
+ if (other_cpu &&
+ HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
+ BUG();
}
}