Add the required interfaces to map, unmap and update a VLPI.

Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
---
 drivers/irqchip/irq-gic-v4.c       | 29 +++++++++++++++++++++++++++++
 include/linux/irqchip/arm-gic-v4.h |  3 +++
 2 files changed, 32 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c
index 7d74089..36ccaac 100644
--- a/drivers/irqchip/irq-gic-v4.c
+++ b/drivers/irqchip/irq-gic-v4.c
@@ -140,3 +140,32 @@ int its_invall_vpe(struct its_vpe *vpe)
 
        return its_send_vpe_cmd(vpe, &info);
 }
+
+int its_map_vlpi(int irq, struct its_vlpi_map *map)
+{
+       struct its_cmd_info info = {
+               .cmd_type = MAP_VLPI,
+               .map      = map,
+       };
+
+       return irq_set_vcpu_affinity(irq, &info);
+}
+
+int its_unmap_vlpi(int irq)
+{
+       struct its_cmd_info info = {
+               .cmd_type = UNMAP_VLPI,
+       };
+
+       return irq_set_vcpu_affinity(irq, &info);
+}
+
+int its_prop_update_vlpi(int irq, u8 config)
+{
+       struct its_cmd_info info = {
+               .cmd_type = PROP_UPDATE_VLPI,
+               .config   = config,
+       };
+
+       return irq_set_vcpu_affinity(irq, &info);
+}
diff --git a/include/linux/irqchip/arm-gic-v4.h 
b/include/linux/irqchip/arm-gic-v4.h
index 1c58add..f85a929 100644
--- a/include/linux/irqchip/arm-gic-v4.h
+++ b/include/linux/irqchip/arm-gic-v4.h
@@ -93,5 +93,8 @@ int its_alloc_vcpu_irqs(struct its_vm *vm, struct its_vpe 
**vpes, int nr_vpes);
 void its_free_vcpu_irqs(struct its_vm *vm, int nr_vpes);
 int its_schedule_vpe(struct its_vpe *vpe, bool on);
 int its_invall_vpe(struct its_vpe *vpe);
+int its_map_vlpi(int irq, struct its_vlpi_map *map);
+int its_unmap_vlpi(int irq);
+int its_prop_update_vlpi(int irq, u8 config);
 
 #endif
-- 
2.1.4

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