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path: root/drivers/xen/events.c
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Diffstat (limited to 'drivers/xen/events.c')
-rw-r--r--drivers/xen/events.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 26c47a4c426..417c1333f6c 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -1258,7 +1258,7 @@ static void __xen_evtchn_do_upcall(void)
{
int start_word_idx, start_bit_idx;
int word_idx, bit_idx;
- int i;
+ int i, irq;
int cpu = get_cpu();
struct shared_info *s = HYPERVISOR_shared_info;
struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu);
@@ -1266,6 +1266,8 @@ static void __xen_evtchn_do_upcall(void)
do {
unsigned long pending_words;
+ unsigned long pending_bits;
+ struct irq_desc *desc;
vcpu_info->evtchn_upcall_pending = 0;
@@ -1276,6 +1278,17 @@ static void __xen_evtchn_do_upcall(void)
/* Clear master flag /before/ clearing selector flag. */
wmb();
#endif
+ if ((irq = per_cpu(virq_to_irq, cpu)[VIRQ_TIMER]) != -1) {
+ int evtchn = evtchn_from_irq(irq);
+ word_idx = evtchn / BITS_PER_LONG;
+ pending_bits = evtchn % BITS_PER_LONG;
+ if (active_evtchns(cpu, s, word_idx) & (1ULL << pending_bits)) {
+ desc = irq_to_desc(irq);
+ if (desc)
+ generic_handle_irq_desc(irq, desc);
+ }
+ }
+
pending_words = xchg(&vcpu_info->evtchn_pending_sel, 0);
start_word_idx = __this_cpu_read(current_word_idx);
@@ -1284,7 +1297,6 @@ static void __xen_evtchn_do_upcall(void)
word_idx = start_word_idx;
for (i = 0; pending_words != 0; i++) {
- unsigned long pending_bits;
unsigned long words;
words = MASK_LSBS(pending_words, word_idx);
@@ -1313,8 +1325,7 @@ static void __xen_evtchn_do_upcall(void)
do {
unsigned long bits;
- int port, irq;
- struct irq_desc *desc;
+ int port;
bits = MASK_LSBS(pending_bits, bit_idx);