diff options
Diffstat (limited to 'drivers/xen')
-rw-r--r-- | drivers/xen/events.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index ab581fa62681..7d2987e9b1bb 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c | |||
@@ -602,6 +602,8 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id) | |||
602 | return IRQ_HANDLED; | 602 | return IRQ_HANDLED; |
603 | } | 603 | } |
604 | 604 | ||
605 | static DEFINE_PER_CPU(unsigned, xed_nesting_count); | ||
606 | |||
605 | /* | 607 | /* |
606 | * Search the CPUs pending events bitmasks. For each one found, map | 608 | * Search the CPUs pending events bitmasks. For each one found, map |
607 | * the event number to an irq, and feed it into do_IRQ() for | 609 | * the event number to an irq, and feed it into do_IRQ() for |
@@ -617,7 +619,6 @@ void xen_evtchn_do_upcall(struct pt_regs *regs) | |||
617 | struct pt_regs *old_regs = set_irq_regs(regs); | 619 | struct pt_regs *old_regs = set_irq_regs(regs); |
618 | struct shared_info *s = HYPERVISOR_shared_info; | 620 | struct shared_info *s = HYPERVISOR_shared_info; |
619 | struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu); | 621 | struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu); |
620 | static DEFINE_PER_CPU(unsigned, nesting_count); | ||
621 | unsigned count; | 622 | unsigned count; |
622 | 623 | ||
623 | exit_idle(); | 624 | exit_idle(); |
@@ -628,7 +629,7 @@ void xen_evtchn_do_upcall(struct pt_regs *regs) | |||
628 | 629 | ||
629 | vcpu_info->evtchn_upcall_pending = 0; | 630 | vcpu_info->evtchn_upcall_pending = 0; |
630 | 631 | ||
631 | if (__get_cpu_var(nesting_count)++) | 632 | if (__get_cpu_var(xed_nesting_count)++) |
632 | goto out; | 633 | goto out; |
633 | 634 | ||
634 | #ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */ | 635 | #ifndef CONFIG_X86 /* No need for a barrier -- XCHG is a barrier on x86. */ |
@@ -653,8 +654,8 @@ void xen_evtchn_do_upcall(struct pt_regs *regs) | |||
653 | 654 | ||
654 | BUG_ON(!irqs_disabled()); | 655 | BUG_ON(!irqs_disabled()); |
655 | 656 | ||
656 | count = __get_cpu_var(nesting_count); | 657 | count = __get_cpu_var(xed_nesting_count); |
657 | __get_cpu_var(nesting_count) = 0; | 658 | __get_cpu_var(xed_nesting_count) = 0; |
658 | } while(count != 1); | 659 | } while(count != 1); |
659 | 660 | ||
660 | out: | 661 | out: |