This is a note to let you know that I've just added the patch titled
Documentation/hw-vuln: Update spectre doc
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
documentation-hw-vuln-update-spectre-doc.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 06cb31cc761823ef444ba4e1df11347342a6e745 Mon Sep 17 00:00:00 2001
From: Lin Yujun <linyujun809@xxxxxxxxxx>
Date: Tue, 30 Aug 2022 20:36:14 +0800
Subject: Documentation/hw-vuln: Update spectre doc
From: Lin Yujun <linyujun809@xxxxxxxxxx>
commit 06cb31cc761823ef444ba4e1df11347342a6e745 upstream.
commit 7c693f54c873691 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")
adds the "ibrs " option in
Documentation/admin-guide/kernel-parameters.txt but omits it to
Documentation/admin-guide/hw-vuln/spectre.rst, add it.
Signed-off-by: Lin Yujun <linyujun809@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220830123614.23007-1-linyujun809@xxxxxxxxxx
Signed-off-by: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/hw-vuln/spectre.rst | 1 +
1 file changed, 1 insertion(+)
--- a/Documentation/admin-guide/hw-vuln/spectre.rst
+++ b/Documentation/admin-guide/hw-vuln/spectre.rst
@@ -625,6 +625,7 @@ kernel command line.
eibrs enhanced IBRS
eibrs,retpoline enhanced IBRS + Retpolines
eibrs,lfence enhanced IBRS + LFENCE
+ ibrs use IBRS to protect kernel
Not specifying this option is equivalent to
spectre_v2=auto.
Patches currently in stable-queue which might be from linyujun809@xxxxxxxxxx are
queue-4.19/documentation-hw-vuln-update-spectre-doc.patch
