From a377514519b9a20fa1ea9adddbb4129573129cef Mon Sep 17 00:00:00 2001
From: Michal Suchanek <msuchanek@suse.de>
Date: Mon, 28 May 2018 15:19:14 +0200
Subject: [PATCH] powerpc/64s: Enhance the information in cpu_show_spectre_v1()
References: bsc#1068032, bsc#1080157
Patch-mainline: v4.18-rc1
Git-commit: a377514519b9a20fa1ea9adddbb4129573129cef
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>
---
arch/powerpc/kernel/security.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 06d5195f6729..3eb9c45f28d7 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -120,6 +120,9 @@ ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, c
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");
}
--
2.13.6