commit a299c074951665af5c20b3650a343722bbb70f5b
author Diana Craciun <diana.craciun@nxp.com> Thu Apr 11 21:46:11 2019 +1000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Wed Apr 17 08:36:41 2019 +0200
tree 460673d14fef0600cc72dc3b9b1e39142cf1e69c
parent a96e47d164fc386cafbc2344d2833980ca9fa04e

powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E

commit ebcd1bfc33c7a90df941df68a6e5d4018c022fba upstream.

Implement the barrier_nospec as a isync;sync instruction sequence.
The implementation uses the infrastructure built for BOOK3S 64.

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
[mpe: Split out of larger patch]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

arch/powerpc/Kconfig

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index a238698..fa8f2aa 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -167,7 +167,7 @@
 config PPC_BARRIER_NOSPEC
     bool
     default y
-    depends on PPC_BOOK3S_64
+    depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E
 
 config GENERIC_CSUM
 	def_bool CPU_LITTLE_ENDIAN