Expand description
Virtual battery device.
This virtual battery device simulates the host’s battery state for the guest. Rather than modeling a real device, it’s a Hyper-V specific design, tailored to meet the ACPI Battery and Power Subsystem Firmware Implementation and the additional requirements imposed by the Windows Hardware Design Guidelines.
This device was implemented alongside the ACPI code in Hyper-V UEFI. For more information, refer to the DSDT in the UEFI codebase: mu_msvm.
For historical context, this device was originally designed for x86 and was later adapted for ARM64.
This device uses LineInterrupts to signal state changes to interested
parties (e.g: the PM device on x86, a system IRQ on Aarch64). A mesh channel
is used to receive battery state updates from the host platform.
Refer to the following resources for more context:
Modules§
- Resolver for battery devices.
Structs§
- Virtual battery device.
- Various runtime objects used by the BatteryDevice