Re: [Xen-devel] [PATCH v2 2/2] xl: Register the AER event handler to handle AER errors.

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Jul 26, 2017 at 07:16:39PM -0500, Venu Busireddy wrote:
> When a guest is created, register the AER event handler to handle the
> AER errors. When an AER error occurs, the handler will forcibly remove
> the erring PCIe device from the guest.
> 
> Signed-off-by: Venu Busireddy <venu.busireddy@xxxxxxxxxx>
> ---
>  tools/xl/xl_vmcontrol.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/tools/xl/xl_vmcontrol.c b/tools/xl/xl_vmcontrol.c
> index 89c2b25..10a48a9 100644
> --- a/tools/xl/xl_vmcontrol.c
> +++ b/tools/xl/xl_vmcontrol.c
> @@ -966,6 +966,15 @@ start:
>      LOG("Waiting for domain %s (domid %u) to die [pid %ld]",
>          d_config.c_info.name, domid, (long)getpid());
>  
> +    ret = libxl_reg_aer_events_handler(ctx, domid);
> +    if (ret) {
> +        /*
> +         * This error may not be severe enough to fail the creation of the 
> VM.
> +         * Log the error, and continue with the creation.
> +         */

What does this comment mean? This is called after the guest is created,
right?

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