[PATCH 1/3] conf: Add a new xenbus controller option for event channels

[Daniel P. Berrangé]

On Wed, Apr 08, 2020 at 02:08:53PM -0600, Jim Fehlig wrote:
> Event channels are like PV interrupts and in conjuction with grant frames
> form a data transfer mechanism for PV drivers. They are also used for
> inter-processor interrupts. Guests with a large number of vcpus and/or
> many PV devices many need to increase the maximum default value of 1023.
> For this reason the native Xen config format supports the
> 'max_event_channels' setting. See xl.cfg(5) man page for more details.
> 
> Similar to the existing maxGrantFrames option, add a new xenbus controller
> option 'maxEventChannels', allowing to adjust the maximum value via libvirt.
> 
> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
> ---
>  docs/formatdomain.html.in     |  8 ++++++--
>  docs/schemas/domaincommon.rng |  5 +++++
>  src/conf/domain_conf.c        | 15 +++++++++++++++
>  src/conf/domain_conf.h        |  1 +
>  4 files changed, 27 insertions(+), 2 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange at redhat.com>


Regards,
Daniel
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