[PATCH v2 1/2] dt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual device

From: Sebastian Ene
Date: Tue Jun 11 2024 - 07:03:57 EST


The vcpu stall detector allows the host to monitor the availability of a
guest VM. Introduce a PPI interrupt which can be injected from the host
into the virtual gic to let the guest reboot itself.

Signed-off-by: Sebastian Ene <sebastianene@xxxxxxxxxx>
Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
.../devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml b/Documentation/devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml
index 1aebeb696ee0..e12d80be00cd 100644
--- a/Documentation/devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml
+++ b/Documentation/devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml
@@ -29,6 +29,9 @@ properties:
Defaults to 10 if unset.
default: 10

+ interrupts:
+ maxItems: 1
+
timeout-sec:
description: |
The stall detector expiration timeout measured in seconds.
@@ -43,9 +46,12 @@ additionalProperties: false

examples:
- |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
vmwdt@9030000 {
compatible = "qemu,vcpu-stall-detector";
reg = <0x9030000 0x10000>;
clock-frequency = <10>;
timeout-sec = <8>;
+ interrupts = <GIC_PPI 15 IRQ_TYPE_EDGE_RISING>;
};
--
2.45.2.505.gda0bf45e8d-goog