powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used

dmcraciun · mpe · commit 3bc8ea8603ae · 2018-12-20T22:59:03.000+11:00
If the user choses not to use the mitigations, replace
the code sequence with nops.

Signed-off-by: Diana Craciun &lt;diana.craciun@nxp.com&gt;
Signed-off-by: Michael Ellerman &lt;mpe@ellerman.id.au&gt;
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
@@ -974,6 +974,7 @@ void __init setup_arch(char **cmdline_p)
 		ppc_md.setup_arch();
 
 	setup_barrier_nospec();
+	setup_spectre_v2();
 
 	paging_init();
 
