linux-kernel - [PATCH 3.16 051/131] x86/cpufeatures: Show KAISER in cpuinfo

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Message-ID: <lsq.1538257387.699964042@decadent.org.uk>
Date:   Sat, 29 Sep 2018 22:43:07 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org
Subject: [PATCH 3.16 051/131] x86/cpufeatures: Show KAISER in cpuinfo

3.16.59-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

I noticed that in the upstream kernel PTI is exposed in /proc/cpuinfo
and in the 4.4 and 4.9 stable branches KAISER is exposed similarly,
but for some reason the backport to 3.16 hid it.  Change to match the
other branches.

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -203,7 +203,7 @@
 #define X86_FEATURE_RETPOLINE	(7*32+29) /* "" Generic Retpoline mitigation for Spectre variant 2 */
 #define X86_FEATURE_RETPOLINE_AMD (7*32+30) /* "" AMD Retpoline mitigation for Spectre variant 2 */
 /* Because the ALTERNATIVE scheme is for members of the X86_FEATURE club... */
-#define X86_FEATURE_KAISER	(7*32+31) /* "" CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */
+#define X86_FEATURE_KAISER	(7*32+31) /* CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */
 
 /* Virtualization flags: Linux defined, word 8 */
 #define X86_FEATURE_TPR_SHADOW  (8*32+ 0) /* Intel TPR Shadow */