linux-kernel - Re: [patch 2/2] x86: Manage ENERGY_PERF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 02 Mar 2010 16:30:49 -0800
From:	Randy Dunlap <rdunlap@...otime.net>
To:	venkatesh.pallipadi@...el.com
CC:	Ingo Molnar <mingo@...e.hu>, H Peter Anvin <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Len Brown <lenb@...nel.org>, Dave Jones <davej@...hat.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [patch 2/2] x86: Manage ENERGY_PERF_BIAS based on cpufreq governor

On 03/02/10 16:06, venkatesh.pallipadi@...el.com wrote:

{bah, more difficult to review an attachment, so no leading '>'}


diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8c666d8..4945add 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -749,6 +749,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			Default value is 0.
 			Value can be changed at runtime via /selinux/enforce.
 
+	epb		[X86] Control IA32_ENERGY_PERF_BIAS setting
+			"disable" - Kernel will not modify this MSR
+			<0..15> - Kernel will set this MSR to i/p static value
+


Should be more like:

	epb=		[X86] Control IA32_ENERGY_PERF_BIAS setting
			Format: { disable | <0...15> }
			"disable" - Kernel will not modify this MSR
			<0..15> - Kernel will set this MSR to i/p static value


But what is "i/p"?  Use whatever word it should be, please.
What do the values mean?
And what does IA32 have to do with this?  does it not apply to x86_64?

thanks,
-- 
~Randy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/