[PATCH 31/32] Documentation: KVM: Introduce documentation for VGICv5

[Sascha Bischoff]

Now that it is possible to create a VGICv5 device, provide initial
documentation for it. At this stage, there is little to document.

Signed-off-by: Sascha Bischoff <sascha.bischoff at arm.com>
---
 Documentation/virt/kvm/devices/arm-vgic-v5.rst | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Documentation/virt/kvm/devices/arm-vgic-v5.rst

diff --git a/Documentation/virt/kvm/devices/arm-vgic-v5.rst b/Documentation/virt/kvm/devices/arm-vgic-v5.rst
new file mode 100644
index 0000000000000..f6591603887bc
--- /dev/null
+++ b/Documentation/virt/kvm/devices/arm-vgic-v5.rst
@@ -0,0 +1,18 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+====================================================
+ARM Virtual Generic Interrupt Controller v5 (VGICv5)
+====================================================
+
+
+Device types supported:
+  - KVM_DEV_TYPE_ARM_VGIC_V5     ARM Generic Interrupt Controller v5.0
+
+Only one VGIC instance may be instantiated through this API.  The created VGIC
+will act as the VM interrupt controller, requiring emulated user-space devices
+to inject interrupts to the VGIC instead of directly to CPUs.
+
+Creating a guest GICv5 device requires a host GICv5 host.  The current VGICv5
+device only supports PPI interrupts.  These can either be injected from emulated
+in-kernel devices (such as the Arch Timer, or PMU), or via the KVM_IRQ_LINE
+ioctl.
-- 
2.34.1