[PATCH v17 10/35] gunyah: vm_mgr: Add VM start/stop

[Srivatsa Vaddagiri]

* Elliot Berman <quic_eberman at quicinc.com> [2024-02-22 15:16:33]:

> Add ioctl to trigger the start of a Gunyah virtual machine. Subsequent
> commits will provide memory to the virtual machine and add ability to
> interact with the resources (capabilities) of the virtual machine.
> Although start of the virtual machine can be done implicitly on the
> first vCPU run for proxy-schedule virtual machines, there is a
> non-trivial number of calls to Gunyah: a more precise error can be given
> to userspace which calls VM_START without looking at kernel logs because
> userspace can detect that the VM start failed instead of "couldn't run
> the vCPU".
> 
> Co-developed-by: Prakruthi Deepak Heragu <quic_pheragu at quicinc.com>
> Signed-off-by: Prakruthi Deepak Heragu <quic_pheragu at quicinc.com>
> Signed-off-by: Elliot Berman <quic_eberman at quicinc.com>

Minor nit below. LGTM otherwise.

Reviewed-by: Srivatsa Vaddagiri <quic_svaddagi at quicinc.com>

> +static int gunyah_vm_start(struct gunyah_vm *ghvm)
> +{

..

> +err:
> +	/* gunyah_vm_free will handle releasing resources and reclaiming memory */

s/gunyah_vm_free/gunyah_vm_release

> +	up_write(&ghvm->status_lock);
> +	return ret;
> +}