linux-kernel - [PATCH -next] Documentation/hw-vuln: Update spectre doc

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Message-ID: <20220826065132.112340-1-linyujun809@huawei.com>
Date:   Fri, 26 Aug 2022 14:51:32 +0800
From:   Lin Yujun <linyujun809@...wei.com>
To:     <corbet@....net>, <bp@...e.de>, <keescook@...omium.org>,
        <aarcange@...hat.com>, <daniel.sneddon@...ux.intel.com>,
        <longman@...hat.com>, <lukas.bulwahn@...il.com>,
        <peterz@...radead.org>, <kim.phillips@....com>,
        <linyujun809@...wei.com>
CC:     <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] Documentation/hw-vuln: Update spectre doc

The following patch adds the specre_v2=ibrs option in
Documentation/admin-guide/kernel-parameters.txt
but omits it to
Documentation/admin-guide/hw-vuln/spectre.rst

commit 7c693f54c873691 ("x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS")

Supplement the specre_v2=ibrs option to
Documentation/admin-guide/hw-vuln/spectre.rst

Signed-off-by: Lin Yujun <linyujun809@...wei.com>
---
 Documentation/admin-guide/hw-vuln/spectre.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/admin-guide/hw-vuln/spectre.rst b/Documentation/admin-guide/hw-vuln/spectre.rst
index 2ce2a38cdd55..c4dcdb3d0d45 100644
--- a/Documentation/admin-guide/hw-vuln/spectre.rst
+++ b/Documentation/admin-guide/hw-vuln/spectre.rst
@@ -613,6 +613,7 @@ 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.
-- 
2.17.1