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dt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual device

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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.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://lore.kernel.org/r/20240703153732.3214238-2-sebastianene@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sebastian Ene 2024-07-03 15:37:31 +00:00 committed by Greg Kroah-Hartman
parent a194467676
commit 173c044752
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/misc/qemu,vcpu-stall-detector.yaml
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@ -29,6 +29,9 @@ properties:
Defaults to 10 if unset. Defaults to 10 if unset.
default: 10 default: 10
interrupts:
maxItems: 1
timeout-sec: timeout-sec:
description: | description: |
The stall detector expiration timeout measured in seconds. The stall detector expiration timeout measured in seconds.
@ -43,9 +46,12 @@ additionalProperties: false
examples: examples:
- | - |
#include <dt-bindings/interrupt-controller/arm-gic.h>
vmwdt@9030000 { vmwdt@9030000 {
compatible = "qemu,vcpu-stall-detector"; compatible = "qemu,vcpu-stall-detector";
reg = <0x9030000 0x10000>; reg = <0x9030000 0x10000>;
clock-frequency = <10>; clock-frequency = <10>;
timeout-sec = <8>; timeout-sec = <8>;
interrupts = <GIC_PPI 15 IRQ_TYPE_EDGE_RISING>;
}; };