On Mon, May 14, 2012 at 9:04 AM, Marc Zyngier <marc.zyngier at arm.com> wrote: > On a SMP host, the barriers should be upgraded to the inner > shareable domain, so that the effect of the barrier can be > observed on other CPUs, in case where the virtual CPU is > migrated from a physical CPU to another. > nice! can you explain me again why we know this will never run on a two-cluster configuration where we could migrate a VM from one cluster to another, which would require us to upgrade to the outer shareable domain? I may be missing something here. > For the same reasons, TLB operations must also be broadcast > across the inner shareable domain. ok, but how does this comment relate to this patch? > > These features shouldn't have any effect on UP hosts. > agreed Thanks, Christoffer
