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Commit e09b4e9a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen 

* 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen: handle events as edge-triggered
  xen: use percpu interrupts for IPIs and VIRQs
parents 871eae48 dffe2e1e

drivers/xen/events.c

+16 −5
Original line number Diff line number Diff line
@@ -112,6 +112,7 @@ static inline unsigned long *cpu_evtchn_mask(int cpu) 
#define VALID_EVTCHN(chn)	((chn) != 0)



static struct irq_chip xen_dynamic_chip;

static struct irq_chip xen_percpu_chip;



/* Constructor for packed IRQ information. */

static struct irq_info mk_unbound_info(void)
@@ -377,7 +378,7 @@ int bind_evtchn_to_irq(unsigned int evtchn) 
		irq = find_unbound_irq();



		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,

					      handle_level_irq, "event");

					      handle_edge_irq, "event");



		evtchn_to_irq[evtchn] = irq;

		irq_info[irq] = mk_evtchn_info(evtchn);
@@ -403,8 +404,8 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu) 
		if (irq < 0)

			goto out;



		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,

					      handle_level_irq, "ipi");

		set_irq_chip_and_handler_name(irq, &xen_percpu_chip,

					      handle_percpu_irq, "ipi");



		bind_ipi.vcpu = cpu;

		if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
@@ -444,8 +445,8 @@ static int bind_virq_to_irq(unsigned int virq, unsigned int cpu) 


		irq = find_unbound_irq();



		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,

					      handle_level_irq, "virq");

		set_irq_chip_and_handler_name(irq, &xen_percpu_chip,

					      handle_percpu_irq, "virq");



		evtchn_to_irq[evtchn] = irq;

		irq_info[irq] = mk_virq_info(evtchn, virq);
@@ -964,6 +965,16 @@ static struct irq_chip xen_dynamic_chip __read_mostly = { 
	.retrigger	= retrigger_dynirq,

};



static struct irq_chip xen_percpu_chip __read_mostly = {

	.name		= "xen-percpu",



	.disable	= disable_dynirq,

	.mask		= disable_dynirq,

	.unmask		= enable_dynirq,



	.ack		= ack_dynirq,

};



int xen_set_callback_via(uint64_t via)

{

	struct xen_hvm_param a;