[PATCH] powerpc/64s: Enhance the information in cpu_show_spectre_v1()
From: Michal Suchanek <hidden>
Date: 2018-05-28 15:54:35
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
We now have barrier_nospec as mitigation so print it in cpu_show_spectre_v1 when enabled. Signed-off-by: Michal Suchanek <redacted> --- arch/powerpc/kernel/security.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 0239383c7e4d..a0c32d53980b 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c@@ -120,7 +120,10 @@ 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"); - return sprintf(buf, "Vulnerable\n"); + if (barrier_nospec_enabled) + return sprintf(buf, "Mitigation: __user pointer sanitization\n"); + else + return sprintf(buf, "Vulnerable\n"); } ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, char *buf)
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2.13.6