RE: 16 vcpus, 200GB of memory boots!!!

Jes Sorensen wrote:
> Zhang, Xiantao wrote:
>> Hi, Jes
>> 	I found the reason why qemu only supports 16 vcpus.  In
>> libkvm/kvm-common.h, the MAX_CPUS is defined as 16 for ia64 side.  We
>> should increase this value to 64 or big value you like.  Please have
>> a try on your mainframe.  Thanks!
>> Xiantao
> 
> Xiantao,
> 
> You are too fast :-)
> 
> With this change I can boot 60 vcpus on my system - thats the limit I
> get from KVM_MAX_VCPUS with your patch from yesterday.
> 
> I am going to look into making this go further! :-)

You can change the p2m size to 32M and have a try.  And it should
support 256G memory and 120 vcpus.  But for larger memory support, we
can allocate huge pages for it, and it should support several T bytes. 

> Regards,
> Jes