diff options
| -rw-r--r-- | xen/arch/x86/physdev.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/xen/arch/x86/physdev.c b/xen/arch/x86/physdev.c index df92cc7fdc..a3ceb7d84f 100644 --- a/xen/arch/x86/physdev.c +++ b/xen/arch/x86/physdev.c @@ -93,6 +93,15 @@ int physdev_map_pirq(domid_t domid, int type, int *index, int *pirq_p, if ( domid == DOMID_SELF && is_hvm_domain(d) ) { + /* + * Only makes sense for vector-based callback, else HVM-IRQ logic + * calls back into itself and deadlocks on hvm_domain.irq_lock. + */ + if ( !is_hvm_pv_evtchn_domain(d) ) + { + ret = -EINVAL; + goto free_domain; + } ret = physdev_hvm_map_pirq(d, type, index, pirq_p); goto free_domain; } |