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From:   Jeremy Linton <jeremy.linton@arm.com>
To:     linux-arm-kernel@lists.infradead.org
Cc:     catalin.marinas@arm.com, will.deacon@arm.com, marc.zyngier@arm.com,
        suzuki.poulose@arm.com, Dave.Martin@arm.com,
        shankerd@codeaurora.org, julien.thierry@arm.com,
        mlangsdo@redhat.com, stefan.wahren@i2se.com,
        Andre.Przywara@arm.com, linux-kernel@vger.kernel.org,
        Mian Yousaf Kaukab <ykaukab@suse.de>,
        Jeremy Linton <jeremy.linton@arm.com>,
        Andre Przywara <andre.przywara@arm.com>
Subject: [v7 02/10] arm64: add sysfs vulnerability show for spectre v1
Date:   Wed, 10 Apr 2019 18:12:29 -0500
Message-Id: <20190410231237.52506-3-jeremy.linton@arm.com>
In-Reply-To: <20190410231237.52506-1-jeremy.linton@arm.com>
References: <20190410231237.52506-1-jeremy.linton@arm.com>
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From: Mian Yousaf Kaukab <ykaukab@suse.de>

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

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>
---
 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