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authorMian Yousaf Kaukab <ykaukab@suse.de>2019-04-15 16:21:21 -0500
committerWill Deacon <will.deacon@arm.com>2019-04-26 16:27:10 +0100
commit3891ebccace188af075ce143d8b072b65e90f695 (patch)
treebe8c9bb37f55ea2459b781727852ad7eb502198d /arch/arm64/kernel/cpu_errata.c
parente5ce5e7267ddcbe13ab9ead2542524e1b7993e5a (diff)
arm64: Add sysfs vulnerability show for spectre-v1
spectre-v1 has been mitigated and the mitigation is always active. Report this to userspace via sysfs Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de> Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/cpu_errata.c')
-rw-r--r--arch/arm64/kernel/cpu_errata.c6
1 files changed, 6 insertions, 0 deletions
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");
+}