| From 98f0fceec7f84d80bc053e49e596088573086421 Mon Sep 17 00:00:00 2001 |
| From: "zhenwei.pi" <zhenwei.pi@youruncloud.com> |
| Date: Thu, 18 Jan 2018 09:04:52 +0800 |
| Subject: x86/pti: Document fix wrong index |
| |
| From: zhenwei.pi <zhenwei.pi@youruncloud.com> |
| |
| 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(-) |
| |
| --- 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 |
