Sheng Yang wrote:
For MSI-X, we have to deal with multiply IRQ with same IRQ handler, so it's
necessary to record the IRQ that trigger the IRQ handler.
Does MSI-X disallowing coalescing two requests into one interrupt? Or
can we still coalesce interrupts (perhaps by recording them as a (irq,
cpu) pair?)
@@ -313,6 +314,9 @@ struct kvm_assigned_dev_kernel {
int host_irq;
bool host_irq_disabled;
int guest_irq;
+#define KVM_ASSIGNED_DEV_IRQ_FIFO_LEN 0x100
+ struct kfifo *irq_fifo;
+ spinlock_t irq_fifo_lock;
#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
What if it runs out?
What does real hardware do? I'm sure it doesn't have a 100-entry queue.
--
error compiling committee.c: too many arguments to function
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