On Fri, 29 Mar 2013, Nicolas Pitre wrote: > On Fri, 29 Mar 2013, Stefano Stabellini wrote: > > > If PSCI initializes correctly and PSCI SMP operations are available, use > > them. > > This is required for SMP support in Dom0 on Xen. > > > > Signed-off-by: Stefano Stabellini <[email protected]> > > CC: [email protected] > > CC: [email protected] > > CC: [email protected] > > CC: [email protected] > > CC: [email protected] > > I'd suggest you also include in your series the patch I posted earlier > providing a runtime mdesc->smp_init method as well.
OK. > This way the > priority order would be: > > - If mdesc->smp_init is non null then use that. > > - Otherwise, if PSCI is available then use that. > > - Otherwise use mdesc->smp. > > This way, if the PSCI default has to be overriden (like in the MCPM case > because it needs to wrap PSCI itself, or to cover Rob's concern) then > this can be achieved at run time on a per mdesc basis. Actually that's not a bad idea, it could make everybody happy. What about the following, in this precise order: - if a xen hypervisor node is present on device tree, use PSCI; - otherwise if mdesc->smp_init is non null then use it; - otherwise if PSCI is available then use it; - otherwise use mdesc->smp. It's the most practical solution to satisfy everybody's needs. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
