Difference in event channel implementation for Xen PV vs HVM guests

Justin T. Gibbs gibbs at freebsd.org
Thu Mar 21 13:03:56 UTC 2013

On Mar 21, 2013, at 6:50 AM, Roger Pau Monné <roger.pau at citrix.com> wrote:

> On 21/03/13 13:43, Roger Pau Monné wrote:
>> On 18/03/13 14:08, Justin T. Gibbs wrote:
>>> Hi Roger,
>>> I know of no reasons why XENHVM cannot use the full event channel
>>> interface.  In fact, Spectra Logic implemented PV timers and a
>>> general cleanup of the HVM event channel interface.  I haven't merged
>>> it back yet because I know the changes break PV and I haven't found
>>> time to clean up the PV code, merge the HVM and PV event channel
>>> systems, and move IPI/MSI delivery to event channels.
>>> I've uploaded Spectra's changes here:
>>> 	http://people.freebsd.org/~gibbs/xen_ev/
>> Hi Justin,
>> There's at least one file which seems to be missing:
> Ops, there at least two files missing:
> sys/x86/xen/hvm.c
> sys/xen/evtchn/evtchnvar.h

I've regenerated the archive with those two files added.


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