[PATCH] KVM: arm64: vgic: Update some comments to improve the code readability

[Zhiyuan Dai]

This patch updates the comments in the vgic_v3_queue_sgi function
to improve the readability of the code.

Signed-off-by: Zhiyuan Dai <daizhiyuan@xxxxxxxxxxxxxx>
---
 arch/arm64/kvm/vgic/vgic-mmio-v3.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/vgic/vgic-mmio-v3.c b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
index ae4c0593d114..f3b328373869 100644
--- a/arch/arm64/kvm/vgic/vgic-mmio-v3.c
+++ b/arch/arm64/kvm/vgic/vgic-mmio-v3.c
@@ -1040,8 +1040,13 @@ static void vgic_v3_queue_sgi(struct kvm_vcpu *vcpu, u32 sgi, bool allow_group1)
 			irq->pending_latch = true;
 			vgic_queue_irq_unlock(vcpu->kvm, irq, flags);
 		} else {
-			/* HW SGI? Ask the GIC to inject it */
 			int err;
+
+			/*
+                        * With GICv4.1, vSGI can be directly injected.
+                        * So let's pretend that they are HW interrupts,
+                        * tied to a host IRQ.
+                        */
 			err = irq_set_irqchip_state(irq->host_irq,
 						    IRQCHIP_STATE_PENDING,
 						    true);
-- 
2.25.1