On Fri, 2020-04-17 at 11:58:36 UTC, Christophe Leroy wrote:
> CONFIG_PPC_KUAP_DEBUG is not selectable because it depends on PPC_32
> which doesn't exists.
>
> Fixing it leads to a deadlock due to a vital register getting
> clobbered in _switch().
>
> Change dependency to PPC32 and use r0 instead of r4 in _switch()
>
> Fixes: e2fb9f544431 ("powerpc/32: Prepare for Kernel Userspace Access
> Protection")
> Cc: sta...@vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/feb8e960d780e170e992a70491eec9dd68f4dbf2
cheers
