[PATCH v5 02/10] powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle

[Akshay Adiga]

On Fri, Mar 08, 2019 at 12:16:11PM +1100, Michael Ellerman wrote:
> In order to implement KUAP (Kernel Userspace Access Protection) on
> Power9 we will be using the AMR, and therefore indirectly the
> UAMOR/AMOR.
> 
> So save/restore these regs in the idle code.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> ---
> v5: Unchanged.
> v4: New.
> 
>  arch/powerpc/kernel/idle_book3s.S | 27 +++++++++++++++++++++++----
>  1 file changed, 23 insertions(+), 4 deletions(-)

Opps.. i posted a comment on the v4. 

It would be good if we can make AMOR/UAMOR/AMR save-restore
code power9 only.