Re: [Xen-users] Purpose of mem-max command

[David Vrabel <david.vrabel@citrix.com>]

On 13/10/15 22:14, Daniel Kiper wrote:
> On Tue, Oct 13, 2015 at 11:55:09AM +0100, Ian Campbell wrote:
>> [CCing Daniel]
>>
>> Daniel, please could you advice on which Xen releases, guest types and
>> guest kernel versions are currently expected to work with memory hotplug.
> 
> Well... It worked, regardless of guest type, when it was introduced first time.
> At that time xend was Xen toolstack. Than xl appeared on the scene and it stopped
> working. I tried to fix it but I was diverted to something more important. Last
> time David (CC-ed here) fixed some memory hotplug issues in Linux kernel (please
> check for-linus-4.4 branch in git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git
> for more details). I suppose that he manged to overcome some xl deficiencies and
> he will be able to shed some light what he did. If not or his work is not upstreamable
> then I leave this on my TODO list. I hope that I will be able to work on this next
> year. However, if somebody is up to this work I am able to mentor he/she or at
> least review relevant patch series. Here are my old patches for xl:
> http://lists.xen.org/archives/html/xen-devel/2013-04/msg03072.html This is really
> old but I think it could be good starting point for further work.

I think I had to manually fiddle with xenstore keys to persuade xl to
allow mem-max to work as expected.

David