Re: powerpc/pseries: advertise Hot Plug Event support to firmware

On Tue, 2017-02-21 at 01:12:18 UTC, Michael Roth wrote:

With the inclusion of:

  powerpc/pseries: Implement indexed-count hotplug memory remove
  powerpc/pseries: Implement indexed-count hotplug memory add

we now have complete handling of the RTAS hotplug event format
as described by PAPR via ACR "PAPR Changes for Hotplug RTAS Events".

This capability is indicated by byte 6, bit 5 of architecture
option vector 5, and allows for greater control over cpu/memory/pci
hot plug/unplug operations.

Existing pseries kernels will utilize this capability based on the
existence of the /event-sources/hot-plug-events DT property, so we
only need to advertise it via CAS and do not need a corresponding
FW_FEATURE_* value to test for.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Fontenot <redacted>
Cc: David Gibson <redacted>
Signed-off-by: Michael Roth <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/3dbbaf200f532e01e56168b8339f29

cheers