genirq: Provide IRQD_FORWARDED_TO_VCPU status flag

Provide a irq data flag to mark an irq forwarded to a VCPU along with
the accessor functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 72a6b2feb7bfb4538798fd013cae68397c1c4ba1..e54ae8295460e4610d900f9deb33a95d6ff9fa80 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -186,6 +186,7 @@ struct irq_data {
  * IRQD_IRQ_MASKED             - Masked state of the interrupt
  * IRQD_IRQ_INPROGRESS         - In progress state of the interrupt
  * IRQD_WAKEUP_ARMED           - Wakeup mode armed
+ * IRQD_FORWARDED_TO_VCPU      - The interrupt is forwarded to a VCPU
  */
 enum {
        IRQD_TRIGGER_MASK               = 0xf,
@@ -200,6 +201,7 @@ enum {
        IRQD_IRQ_MASKED                 = (1 << 17),
        IRQD_IRQ_INPROGRESS             = (1 << 18),
        IRQD_WAKEUP_ARMED               = (1 << 19),
+       IRQD_FORWARDED_TO_VCPU          = (1 << 20),
 };
 
 #define __irqd_to_state(d)             ((d)->common->state_use_accessors)
@@ -278,6 +280,20 @@ static inline bool irqd_is_wakeup_armed(struct irq_data *d)
        return __irqd_to_state(d) & IRQD_WAKEUP_ARMED;
 }
 
+static inline bool irqd_is_forwarded_to_vcpu(struct irq_data *d)
+{
+       return __irqd_to_state(d) & IRQD_FORWARDED_TO_VCPU;
+}
+
+static inline void irqd_set_forwarded_to_vcpu(struct irq_data *d)
+{
+       __irqd_to_state(d) |= IRQD_FORWARDED_TO_VCPU;
+}
+
+static inline void irqd_clr_forwarded_to_vcpu(struct irq_data *d)
+{
+       __irqd_to_state(d) &= ~IRQD_FORWARDED_TO_VCPU;
+}
 
 /*
  * Functions for chained handlers which can be enabled/disabled by the