lkml.org 
[lkml]   [2018]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH 2/2] x86/speculation: Support "Enhanced IBRS" on future CPUs
Date
> >> For bonus points:  What should happen to a VM that is live migrated
> >> from one hypervisor to another, and the hypervisors have different
> >> IBRS support?
> >
> > Doctor Doctor it hurts when I do this....
> >
> > Migration tends to only work between HV's that are relatively
> > homogeneous, that's nothing new...
>
> No Arjan, this is just wrong. Well, I suppose it's right in the present
> tense with the IBRS mess on Skylake, but it's _not_ been true until last
> year.


I meant software wise. You're not going to live migrate from xen to kvm or backwards. or between very radically different versions of the kvm stack.

\
 
 \ /
  Last update: 2018-02-20 15:08    [W:1.441 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site