[PATCH stable v4.14 28/32] powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used

[Michael Ellerman]

From: Diana Craciun <diana.crac...@nxp.com>

commit 3bc8ea8603ae4c1e09aca8de229ad38b8091fcb3 upstream.

If the user choses not to use the mitigations, replace
the code sequence with nops.

Signed-off-by: Diana Craciun <diana.crac...@nxp.com>
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
 arch/powerpc/kernel/setup-common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kernel/setup-common.c 
b/arch/powerpc/kernel/setup-common.c
index ab7a75b731da..c58364c74dad 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -938,6 +938,7 @@ void __init setup_arch(char **cmdline_p)
                ppc_md.setup_arch();
 
        setup_barrier_nospec();
+       setup_spectre_v2();
 
        paging_init();
 
-- 
2.20.1