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Re: [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels

To: Ian Jackson <ian.jackson@xxxxxxxxxx>
From: Olaf Hering <olaf@xxxxxxxxx>
Date: Fri, 27 Mar 2020 15:37:35 +0100
Cc: Anthony Perard <anthony.perard@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
Delivery-date: Fri, 27 Mar 2020 14:37:50 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On Fri, Mar 27, Ian Jackson wrote:

> This seems likely to be right, but: what is the default in Xen ?  Is
> it sufficiently tight to stop a guest using too many resources ?

The value of d->max_evtchns will be either 4k or 128k.
AFAICS no extra resources are allocated with the changed value.

Olaf

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Follow-Ups:
- Re: [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels
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- Re: [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels
  - From: Jan Beulich

References:
- [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels
  - From: Olaf Hering
- Re: [Xen-devel] [PATCH v1] libxl: remove limit for default number of event channels
  - From: Ian Jackson

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