x86/apic/msi: Plug non-maskable MSI affinity race

[mirror_ubuntu-bionic-kernel.git] / include / linux / irq.h

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 38b27178875f554df73b53e9a79dd536db42e0d3..65545b97d7813387dba246da1ce646fe339943aa 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -213,6 +213,8 @@ struct irq_data {
  * IRQD_SINGLE_TARGET          - IRQ allows only a single affinity target
  * IRQD_DEFAULT_TRIGGER_SET    - Expected trigger already been set
  * IRQD_CAN_RESERVE            - Can use reservation mode
+ * IRQD_MSI_NOMASK_QUIRK       - Non-maskable MSI quirk for affinity change
+ *                               required
  */
 enum {
        IRQD_TRIGGER_MASK               = 0xf,
@@ -235,6 +237,7 @@ enum {
        IRQD_SINGLE_TARGET              = (1 << 24),
        IRQD_DEFAULT_TRIGGER_SET        = (1 << 25),
        IRQD_CAN_RESERVE                = (1 << 26),
+       IRQD_MSI_NOMASK_QUIRK           = (1 << 27),
 };
 
 #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors)
@@ -394,6 +397,21 @@ static inline bool irqd_can_reserve(struct irq_data *d)
        return __irqd_to_state(d) & IRQD_CAN_RESERVE;
 }
 
+static inline void irqd_set_msi_nomask_quirk(struct irq_data *d)
+{
+       __irqd_to_state(d) |= IRQD_MSI_NOMASK_QUIRK;
+}
+
+static inline void irqd_clr_msi_nomask_quirk(struct irq_data *d)
+{
+       __irqd_to_state(d) &= ~IRQD_MSI_NOMASK_QUIRK;
+}
+
+static inline bool irqd_msi_nomask_quirk(struct irq_data *d)
+{
+       return __irqd_to_state(d) & IRQD_MSI_NOMASK_QUIRK;
+}
+
 #undef __irqd_to_state
 
 static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)