Re: [Xen-devel] sources of freebsd with xen-4.2 kernel updates

[Igor Kozhukhov <ikozhukhov@xxxxxxxxx>]

On Dec 30, 2013, at 3:25 PM, Roger Pau Monné wrote:

> On 30/12/13 11:57, Igor Kozhukhov wrote:
>> Hi Roger,
>> 
>> thanks for the link.
>> I have the same/(similar the same) implementation on illumos(OpenSolaris).
>> 
>> do you have plans for grant table v1 & v2 implementation on FreeBSD ?
> 
> Grant table v1 is the current implementation, and I don't have plans
> currently to add support for v2 (cannot speak of others though).
> 
> Linux has v2 implemented, but AFAIK there's no user of the new features
> introduced by v2. Right now with v2 you just end up with less grants,
> because v2 grants metadata use twice as much memory as v1 grants, and
> the number of grant frames is limited by the hypervisor.
> 

Thank you all for your info.

I have just tested it and can see that PV and HVM guests are using V1 if V2 not 
implemented on dom0 - for example: on xen-3.4 hypervisor.

well - my first step for xen-4.2 port to illumos based platform have progress :)
after updates xen-4.2 public headers with grant tables and some additional 
changes, PV and HVM guests works on xen-3.4 dom0.

i have DilOS(illumos based platform) with xen-3.4.5-pre1(latest updates on 3.4) 
as dom0.
i'm interested in xen-4.2 port with next updates to xen-4.4.

-Igor


> Roger.
> 


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