[v7 02/10] arm64: add sysfs vulnerability show for spectre v1

[Jeremy Linton]

From: Mian Yousaf Kaukab <ykau...@suse.de>

spectre v1, has been mitigated, and the mitigation is
always active.

Signed-off-by: Mian Yousaf Kaukab <ykau...@suse.de>
Signed-off-by: Jeremy Linton <jeremy.lin...@arm.com>
Reviewed-by: Andre Przywara <andre.przyw...@arm.com>
Reviewed-by: Catalin Marinas <catalin.mari...@arm.com>
Tested-by: Stefan Wahren <stefan.wah...@i2se.com>
Acked-by: Suzuki K Poulose <suzuki.poul...@arm.com>
---
 arch/arm64/kernel/cpu_errata.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index d2b2c69d31bb..cf623657cf3c 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -755,3 +755,9 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
        {
        }
 };
+
+ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr,
+                           char *buf)
+{
+       return sprintf(buf, "Mitigation: __user pointer sanitization\n");
+}
-- 
2.20.1