linux-kernel - [PATCH 4/4] x86/speculation: Add PSF mitigation kernel parameters

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Message-ID: <20210421090117.22315-5-rsaripal@amd.com>
Date:   Wed, 21 Apr 2021 04:01:17 -0500
From:   Ramakrishna Saripalli <rsaripal@....com>
To:     <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        Jonathan Corbet <corbet@....net>
CC:     <bsd@...hat.com>, <rsaripal@....com>
Subject: [PATCH 4/4] x86/speculation: Add PSF mitigation kernel parameters

From: Ramakrishna Saripalli <rk.saripalli@....com>

PSF mitigation introduces a new kernel parameter called
	predict_store_fwd.

Signed-off-by: Ramakrishna Saripalli<rk.saripalli@....com>
---
 Documentation/admin-guide/kernel-parameters.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 04545725f187..58f6bd02385b 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3940,6 +3940,11 @@
 			Format: {"off"}
 			Disable Hardware Transactional Memory
 
+	predict_store_fwd	[X86] This option controls PSF mitigation
+			off - Turns on PSF mitigation.
+			on  - Turns off PSF mitigation.
+			default : on.
+
 	preempt=	[KNL]
 			Select preemption mode if you have CONFIG_PREEMPT_DYNAMIC
 			none - Limited to cond_resched() calls
-- 
2.25.1