| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 032/107] powerpc/64: Make stf barrier PPC_BOOK3S_64 specific. | Date | Mon, 1 Apr 2019 19:01:47 +0200 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Diana Craciun <diana.craciun@nxp.com>
commit 6453b532f2c8856a80381e6b9a1f5ea2f12294df upstream.
NXP Book3E platforms are not vulnerable to speculative store bypass, so make the mitigations PPC_BOOK3S_64 specific.
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/security.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -176,6 +176,7 @@ ssize_t cpu_show_spectre_v2(struct devic return s.len; } +#ifdef CONFIG_PPC_BOOK3S_64 /* * Store-forwarding barrier support. */ @@ -323,3 +324,4 @@ static __init int stf_barrier_debugfs_in } device_initcall(stf_barrier_debugfs_init); #endif /* CONFIG_DEBUG_FS */ +#endif /* CONFIG_PPC_BOOK3S_64 */
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