[PATCH v3 35/59] irqchip/gic-v3: Advertise GICv4 support to KVM

Marc Zyngier
2017-07-31T17:26:13Z

As KVM needs to know about the availability of GICv4 to enable
direct injection of interrupts, let's advertise the feature in
the gic_kvm_info structure.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
drivers/irqchip/irq-gic-v3.c | 2 ++
include/linux/irqchip/arm-gic-common.h | 2 ++
2 files changed, 4 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 17f0ad41864f..e2b8409dd76e 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -1159,6 +1159,7 @@ static void __init gic_of_setup_kvm_info(struct device_node *node)
if (!ret)
gic_v3_kvm_info.vcpu = r;

+ gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis;
gic_set_kvm_info(&gic_v3_kvm_info);
}

@@ -1455,6 +1456,7 @@ static void __init gic_acpi_setup_kvm_info(void)
vcpu->end = vcpu->start + ACPI_GICV2_VCPU_MEM_SIZE - 1;
}

+ gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis;
gic_set_kvm_info(&gic_v3_kvm_info);
}

diff --git a/include/linux/irqchip/arm-gic-common.h b/include/linux/irqchip/arm-gic-common.h
index c647b0547bcd..0a83b4379f34 100644
--- a/include/linux/irqchip/arm-gic-common.h
+++ b/include/linux/irqchip/arm-gic-common.h
@@ -27,6 +27,8 @@ struct gic_kvm_info {
unsigned int maint_irq;
/* Virtual control interface */
struct resource vctrl;
+ /* vlpi support */
+ bool has_v4;
};

const struct gic_kvm_info *gic_get_kvm_info(void);
--
2.11.0