Re: [Xen-devel] [PATCH 11/11] libxl, xl: add event_channels option to xl configuration file

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

David Vrabel writes ("[PATCH 11/11] libxl,xl: add event_channels option to xl 
configuration file"):
> +=item B<max_event_channels=N>
> +
> +Limit the guest to using at most N event channels (PV interrupts).
> +Guests use hypervisor resources for each event channel they use.
> +
> +The default of 1023 should be sufficient for typical guests.  The
> +maximum value depends what the guest supports.  Guests supporting the
> +FIFO-based event channel ABI support up to 131,071 event channels.
> +Other guests are limited to 4095 (64-bit x86 and ARM) or 1023 (32-bit
> +x86).

It's not clear to me what happens if you specify a larger value for
max_event_channels than the guest and/or hypervisor support.

Ian.

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