42 lines
1.3 KiB
Diff
42 lines
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Tim Chen <tim.c.chen@linux.intel.com>
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Date: Wed, 27 Sep 2017 12:09:14 -0700
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Subject: [PATCH] x86/feature: Report presence of IBPB and IBRS control
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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CVE-2017-5753
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CVE-2017-5715
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Report presence of IBPB and IBRS.
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Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
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Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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(cherry picked from commit c41156d893e7f48bebf8d71cfddd39d8fb2724f8)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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arch/x86/kernel/cpu/intel.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
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index dfa90a3a5145..f1d94c73625a 100644
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--- a/arch/x86/kernel/cpu/intel.c
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+++ b/arch/x86/kernel/cpu/intel.c
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@@ -627,6 +627,11 @@ static void init_intel(struct cpuinfo_x86 *c)
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init_intel_energy_perf(c);
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init_intel_misc_features(c);
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+
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+ if (boot_cpu_has(X86_FEATURE_SPEC_CTRL))
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+ printk_once(KERN_INFO "FEATURE SPEC_CTRL Present\n");
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+ else
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+ printk_once(KERN_INFO "FEATURE SPEC_CTRL Not Present\n");
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}
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#ifdef CONFIG_X86_32
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--
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2.14.2
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