linux-kernel - [PATCH v1 3/3] hv: add description for hv

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Date:   Thu, 13 Sep 2018 17:13:25 +0800
From:   Yi Sun <yi.y.sun@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, chao.p.peng@...el.com, chao.gao@...el.com,
        isaku.yamahata@...el.com, michael.h.kelly@...rosoft.com,
        tianyu.lan@...rosoft.com, Yi Sun <yi.y.sun@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>
Subject: [PATCH v1 3/3] hv: add description for hv_nopvspin

hv_nopvspin is a command line parameter used to
disable Hyper-V PV spinlock.

Cc: Jonathan Corbet <corbet@....net>
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
Cc: Haiyang Zhang <haiyangz@...rosoft.com>
Cc: Stephen Hemminger <sthemmin@...rosoft.com>
Signed-off-by: Yi Sun <yi.y.sun@...ux.intel.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 64a3bf5..fc761b5 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1385,6 +1385,11 @@
 	hvc_iucv_allow=	[S390]	Comma-separated list of z/VM user IDs.
 				If specified, z/VM IUCV HVC accepts connections
 				from listed z/VM user IDs only.
+
+	hv_nopvspin	[X86,HYPER_V]
+			Disables the ticketlock slowpath using HYPER-V PV
+			optimizations.
+
 	keep_bootcon	[KNL]
 			Do not unregister boot console at start. This is only
 			useful for debugging when something happens in the window
-- 
1.9.1