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Subject[PATCH 4.14 029/107] powerpc/64s: Enhance the information in cpu_show_spectre_v1()
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michal Suchanek <msuchanek@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 <msuchanek@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@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
@@ -120,6 +120,9 @@ 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");
}


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