From: Diana Craciun <diana.craciun@nxp.com>
Date: Fri, 27 Jul 2018 23:06:39 +0000 (+1000)
Subject: Documentation: Add nospectre_v1 parameter
X-Git-Tag: v4.9.172~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5bf817bf61cd60e0a47b45369e228fddb4a854ea;p=thirdparty%2Fkernel%2Fstable.git

Documentation: Add nospectre_v1 parameter

commit 26cb1f36c43ee6e89d2a9f48a5a7500d5248f836 upstream.

Currently only supported on powerpc.

Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index dfdb8c55e8e48..a1472b48ee22b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2758,6 +2758,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
 	nohugeiomap	[KNL,x86] Disable kernel huge I/O mappings.
 
+	nospectre_v1	[PPC] Disable mitigations for Spectre Variant 1 (bounds
+			check bypass). With this option data leaks are possible
+			in the system.
+
 	nosmt		[KNL,S390] Disable symmetric multithreading (SMT).
 			Equivalent to smt=1.