From: David Vrabel <dvrabel@cantab.net>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Keir Fraser <keir@xen.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <jbeulich@suse.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH 11/11] libxl, xl: add event_channels option to xl configuration file
Date: Tue, 01 Oct 2013 13:53:58 +0100 [thread overview]
Message-ID: <524AC5E6.7040007@cantab.net> (raw)
In-Reply-To: <1380631013.925.62.camel@kazak.uk.xensource.com>
On 01/10/13 13:36, Ian Campbell wrote:
> On Fri, 2013-09-27 at 11:55 +0100, David Vrabel wrote:
>
>> +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).
>
> Does this setting really restrict the classical ABI to 127? TBH I'm fine
> if it does, just curious.
Yes, the limit applies regardless of the ABI that a guest uses.
With the 2-level ABI it doesn't save much Xen resources though (1 xen
heap page per 128 events).
David
next prev parent reply other threads:[~2013-10-01 12:53 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 10:55 [PATCHv4 0/11] Xen: FIFO-based event channel ABI David Vrabel
2013-09-27 10:55 ` [PATCH 01/11] debug: remove some event channel info from the 'i' and 'q' debug keys David Vrabel
2013-09-27 10:55 ` [PATCH 02/11] evtchn: refactor low-level event channel port ops David Vrabel
2013-09-27 10:55 ` [PATCH 03/11] evtchn: print ABI specific state with the 'e' debug key David Vrabel
2013-09-27 10:55 ` [PATCH 04/11] evtchn: use a per-domain variable for the max number of event channels David Vrabel
2013-09-27 10:55 ` [PATCH 05/11] evtchn: allow many more evtchn objects to be allocated per domain David Vrabel
2013-09-27 10:55 ` [PATCH 06/11] evtchn: add FIFO-based event channel ABI David Vrabel
2013-09-27 10:55 ` [PATCH 07/11] evtchn: implement EVTCHNOP_set_priority and add the set_priority hook David Vrabel
2013-09-27 10:55 ` [PATCH 08/11] evtchn: add FIFO-based event channel hypercalls and port ops David Vrabel
2013-09-27 12:34 ` Jan Beulich
2013-09-27 10:55 ` [PATCH 09/11] xen: Add DOMCTL to limit the number of event channels a domain may use David Vrabel
2013-09-27 12:40 ` Jan Beulich
2013-09-27 14:29 ` Daniel De Graaf
2013-09-27 10:55 ` [PATCH 10/11] libxc: add xc_domain_set_max_evtchn() David Vrabel
2013-10-01 12:30 ` Ian Campbell
2013-09-27 10:55 ` [PATCH 11/11] libxl, xl: add event_channels option to xl configuration file David Vrabel
2013-10-01 12:36 ` Ian Campbell
2013-10-01 12:53 ` David Vrabel [this message]
2013-09-27 12:41 ` [PATCHv4 0/11] Xen: FIFO-based event channel ABI Jan Beulich
2013-09-30 18:41 ` Konrad Rzeszutek Wilk
2013-10-01 10:25 ` Jan Beulich
2013-10-01 14:22 ` Konrad Rzeszutek Wilk
2013-10-01 14:41 ` Jan Beulich
-- strict thread matches above, loose matches on Subject: below --
2013-10-02 16:35 [PATCHv5 " David Vrabel
2013-10-02 16:36 ` [PATCH 11/11] libxl, xl: add event_channels option to xl configuration file David Vrabel
2013-10-03 8:29 ` Ian Campbell
2013-10-14 14:31 ` Ian Jackson
2013-10-14 16:43 ` David Vrabel
2013-10-14 16:58 ` Ian Jackson
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