[PATCH 4.19 040/134] powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used

4.19-stable review patch. If anyone has any objections, please let me know.

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From: Diana Craciun diana.craciun@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.craciun@nxp.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/kernel/setup-common.c | 1 + 1 file changed, 1 insertion(+)

--- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -973,6 +973,7 @@ void __init setup_arch(char **cmdline_p) ppc_md.setup_arch();

setup_barrier_nospec(); + setup_spectre_v2();

paging_init();