1 files changed, 34 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0089-x86-pti-Document-fix-wrong-index.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0089-x86-pti-Document-fix-wrong-index.patch
new file mode 100644
index 00000000..54d9b443
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0089-x86-pti-Document-fix-wrong-index.patch
@@ -0,0 +1,34 @@
+From 681e4c72f7d620f7ba9d806f5997d3aeb4442b18 Mon Sep 17 00:00:00 2001
+From: "zhenwei.pi" <zhenwei.pi@youruncloud.com>
+Date: Thu, 18 Jan 2018 09:04:52 +0800
+Subject: [PATCH 089/103] x86/pti: Document fix wrong index
+
+commit 98f0fceec7f84d80bc053e49e596088573086421 upstream.
+
+In section <2. Runtime Cost>, fix wrong index.
+
+Signed-off-by: zhenwei.pi <zhenwei.pi@youruncloud.com>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Cc: dave.hansen@linux.intel.com
+Link: https://lkml.kernel.org/r/1516237492-27739-1-git-send-email-zhenwei.pi@youruncloud.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ Documentation/x86/pti.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Documentation/x86/pti.txt b/Documentation/x86/pti.txt
+index d11eff6..5cd5843 100644
+--- a/Documentation/x86/pti.txt
++++ b/Documentation/x86/pti.txt
+@@ -78,7 +78,7 @@ this protection comes at a cost:
+      non-PTI SYSCALL entry code, so requires mapping fewer
+      things into the userspace page tables.  The downside is
+      that stacks must be switched at entry time.
+-  d. Global pages are disabled for all kernel structures not
++  c. Global pages are disabled for all kernel structures not
+      mapped into both kernel and userspace page tables.  This
+      feature of the MMU allows different processes to share TLB
+      entries mapping the kernel.  Losing the feature means more
+-- 
+2.7.4
+