On Fri, Aug 17, 2012 at 06:38:03PM +1000, Benjamin Herrenschmidt wrote: > This patch removes the powerpc "generic" updates of vcpu->cpu in > load and put, and moves them to the various backends. > > The reason is that "HV" KVM does its own sauce with that field > and the generic updates might corrupt it. The field contains the > CPU# of the -first- HW CPU of the core always for all the VCPU > threads of a core (the one that's online from a host Linux > perspective). > > However, the preempt notifiers are going to be called on the > threads VCPUs when they are running (due to them sleeping on our > private waitqueue) causing unload to be called, potentially > clobbering the value. > > Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Acked-by: Paul Mackerras <paulus@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
