Re: [PATCH v3 15/15] Drivers: hv: Add modules to expose /dev/mshv to VMMs running on Hyper-V

[Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>]

On Fri, Sep 22, 2023 at 11:38:35AM -0700, Nuno Das Neves wrote:
> +static int __init mshv_vtl_init(void)
> +{
> +	int ret;
> +
> +	tasklet_init(&msg_dpc, mshv_vtl_sint_on_msg_dpc, 0);
> +	init_waitqueue_head(&fd_wait_queue);
> +
> +	if (mshv_vtl_get_vsm_regs()) {
> +		pr_emerg("%s: Unable to get VSM capabilities !!\n", __func__);
> +		BUG();
> +	}


So you crash the whole kernel if someone loads this module on a non-mshv
system?

That seems quite excessive and hostile :(

Or am I somehow reading this incorrectly?

thanks,

greg k-h