[PATCH 4.4 043/266] powerpc/64s: Enhance the information in cpu_show_spectre_v1()

[Greg Kroah-Hartman]

From: Michal Suchanek <msucha...@suse.de>

commit a377514519b9a20fa1ea9adddbb4129573129cef upstream.

We now have barrier_nospec as mitigation so print it in
cpu_show_spectre_v1() when enabled.

Signed-off-by: Michal Suchanek <msucha...@suse.de>
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 arch/powerpc/kernel/security.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -121,6 +121,9 @@ ssize_t cpu_show_spectre_v1(struct devic
        if (!security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR))
                return sprintf(buf, "Not affected\n");
 
+       if (barrier_nospec_enabled)
+               return sprintf(buf, "Mitigation: __user pointer 
sanitization\n");
+
        return sprintf(buf, "Vulnerable\n");
 }