On Wed, 2018-03-21 at 10:31:59 UTC, Paul Mackerras wrote: > This adds a CPU feature bit which is set for POWER9 "Nimbus" DD2.2 > processors which will be used to enable the hypervisor to assist > hardware with the handling of checkpointed register values while the > CPU is in suspend state, in order to work around hardware bugs. The > hardware assistance for these workarounds introduced a new hardware > bug relating to the XER[SO] bit. We add a separate feature bit for > this bug in case future chips fix it while still requiring the > hypervisor assistance with suspend state. > > When the dt_cpu_ftrs subsystem is in use, the software assistance can > be enabled using a "tm-suspend-hypervisor-assist" node in the device > tree, and a "tm-suspend-xer-so-bug" node enables the workarounds for > the XER[SO] bug. In the absence of such nodes, a quirk enables both > for POWER9 "Nimbus" DD2.2 processors. > > Signed-off-by: Paul Mackerras <paulus@xxxxxxxxxx> Series applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/b5af4f2793233cf37596e2c1f7b233 cheers
