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

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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>
This commit is contained in:
Diana Craciun 2019-03-29 22:26:16 +11:00 committed by Greg Kroah-Hartman
parent 51a4980163
commit feafb29fe0
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/setup-common.c
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@ -938,6 +938,7 @@ void __init setup_arch(char **cmdline_p)
ppc_md.setup_arch();
setup_barrier_nospec();
setup_spectre_v2();
paging_init();