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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, mark.rutland@arm.com,
        linux-kernel@vger.kernel.org, ykaukab@suse.de,
        julien.thierry@arm.com, mlangsdo@redhat.com, steven.price@arm.com,
        Jeremy Linton <jeremy.linton@arm.com>
Subject: [PATCH v2 4/7] arm64: add sysfs vulnerability show for spectre v1
Date:   Wed,  2 Jan 2019 18:49:18 -0600
Message-Id: <20190103004921.1928921-5-jeremy.linton@arm.com>
In-Reply-To: <20190103004921.1928921-1-jeremy.linton@arm.com>
References: <20190103004921.1928921-1-jeremy.linton@arm.com>
Sender: linux-kernel-owner@vger.kernel.org
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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>
---
 arch/arm64/kernel/cpu_errata.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 09ac548c9d44..2352955b1259 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -742,3 +742,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
 	{
 	}
 };
+
+#ifdef CONFIG_GENERIC_CPU_VULNERABILITIES
+
+ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr,
+		char *buf)
+{
+	return sprintf(buf, "Mitigation: __user pointer sanitization\n");
+}
+
+#endif
-- 
2.17.2