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-rw-r--r--drivers/kvm/irq.h2
-rw-r--r--drivers/kvm/kvm_main.c10
-rw-r--r--include/linux/kvm.h29
3 files changed, 39 insertions, 2 deletions
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h
index 4034f6576cd..30adddcb182 100644
--- a/drivers/kvm/irq.h
+++ b/drivers/kvm/irq.h
@@ -61,7 +61,7 @@ int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
void kvm_pic_update_irq(struct kvm_pic *s);
-#define IOAPIC_NUM_PINS 24
+#define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
#define IOAPIC_EDGE_TRIG 0
#define IOAPIC_LEVEL_TRIG 1
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index c270e4afd3f..61dff55f137 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -913,6 +913,11 @@ static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
&pic_irqchip(kvm)->pics[1],
sizeof(struct kvm_pic_state));
break;
+ case KVM_IRQCHIP_IOAPIC:
+ memcpy (&chip->chip.ioapic,
+ ioapic_irqchip(kvm),
+ sizeof(struct kvm_ioapic_state));
+ break;
default:
r = -EINVAL;
break;
@@ -936,6 +941,11 @@ static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
&chip->chip.pic,
sizeof(struct kvm_pic_state));
break;
+ case KVM_IRQCHIP_IOAPIC:
+ memcpy (ioapic_irqchip(kvm),
+ &chip->chip.ioapic,
+ sizeof(struct kvm_ioapic_state));
+ break;
default:
r = -EINVAL;
break;
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 6560f11870f..42d15150d7a 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -45,7 +45,7 @@ struct kvm_irq_level {
__u32 level;
};
-/* for KVM_GET_IRQCHIP / KVM_SET_IRQCHIP */
+/* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
struct kvm_pic_state {
__u8 last_irr; /* edge detection */
__u8 irr; /* interrupt request register */
@@ -65,9 +65,35 @@ struct kvm_pic_state {
__u8 elcr_mask;
};
+#define KVM_IOAPIC_NUM_PINS 24
+struct kvm_ioapic_state {
+ __u64 base_address;
+ __u32 ioregsel;
+ __u32 id;
+ __u32 irr;
+ __u32 pad;
+ union {
+ __u64 bits;
+ struct {
+ __u8 vector;
+ __u8 delivery_mode:3;
+ __u8 dest_mode:1;
+ __u8 delivery_status:1;
+ __u8 polarity:1;
+ __u8 remote_irr:1;
+ __u8 trig_mode:1;
+ __u8 mask:1;
+ __u8 reserve:7;
+ __u8 reserved[4];
+ __u8 dest_id;
+ } fields;
+ } redirtbl[KVM_IOAPIC_NUM_PINS];
+};
+
enum kvm_irqchip_id {
KVM_IRQCHIP_PIC_MASTER = 0,
KVM_IRQCHIP_PIC_SLAVE = 1,
+ KVM_IRQCHIP_IOAPIC = 2,
};
struct kvm_irqchip {
@@ -76,6 +102,7 @@ struct kvm_irqchip {
union {
char dummy[512]; /* reserving space */
struct kvm_pic_state pic;
+ struct kvm_ioapic_state ioapic;
} chip;
};