linux-kernel - [PATCH v2 31/33] Documentation/kernel-parameters: Add kernel parameter "resctrl" for CAT

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Date:   Thu,  8 Sep 2016 02:57:25 -0700
From:   "Fenghua Yu" <fenghua.yu@...el.com>
To:     "Thomas Gleixner" <tglx@...utronix.de>,
        "H. Peter Anvin" <h.peter.anvin@...el.com>,
        "Ingo Molnar" <mingo@...e.hu>, "Tony Luck" <tony.luck@...el.com>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Tejun Heo" <tj@...nel.org>, "Borislav Petkov" <bp@...e.de>,
        "Stephane Eranian" <eranian@...gle.com>,
        "Marcelo Tosatti" <mtosatti@...hat.com>,
        "David Carrillo-Cisneros" <davidcc@...gle.com>,
        "Shaohua Li" <shli@...com>,
        "Ravi V Shankar" <ravi.v.shankar@...el.com>,
        "Vikas Shivappa" <vikas.shivappa@...ux.intel.com>,
        "Sai Prakhya" <sai.praneeth.prakhya@...el.com>
Cc:     "linux-kernel" <linux-kernel@...r.kernel.org>,
        "x86" <x86@...nel.org>, Fenghua Yu <fenghua.yu@...el.com>
Subject: [PATCH v2 31/33] Documentation/kernel-parameters: Add kernel parameter "resctrl" for CAT

From: Fenghua Yu <fenghua.yu@...el.com>

Add kernel parameter "resctrl" for CAT L3:

resctrl=disable_cat_l3: disable CAT L3
resctrl=simulate_cat_l3: simulate CAT L3

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
---
 Documentation/kernel-parameters.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index a4f4d69..1240a4f 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3692,6 +3692,19 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			Memory area to be used by remote processor image,
 			managed by CMA.
 
+	resctrl=	[X86] Resource control
+			Format:
+			[disable_cat_l3][,simulate_cat_l3]
+
+			disable_cat_l3  - Disable CAT L3. By default, CAT L3
+					  is enabled.
+
+			simulate_cat_l3 - Simulate CAT L3 on a machine that
+					  doesn't have the feature. In the
+					  simulation, max closid is 16 and
+					  max cbm lenghth is 20, and host
+					  machine's cache hierarchy is used.
+
 	rw		[KNL] Mount root device read-write on boot
 
 	S		[KNL] Run init in single mode
-- 
2.5.0