From mboxrd@z Thu Jan 1 00:00:00 1970 From: venkatesh.pallipadi@intel.com Subject: [patch 0/2] Support for IA32_ENERGY_PERF_BIAS MSR Date: Tue, 02 Mar 2010 16:06:49 -0800 Message-ID: <20100303000649.757684000@intel.com> Return-path: Received: from mga02.intel.com ([134.134.136.20]:20201 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754033Ab0CCASj (ORCPT ); Tue, 2 Mar 2010 19:18:39 -0500 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Ingo Molnar , H Peter Anvin , Thomas Gleixner , Len Brown , Dave Jones Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Venkatesh Pallipadi There is a new hardware feature, which lets system software to set Energy Performance Preference. This is a opaque knob in the form of IA32_ENERGY_PERF_BIAS MSR, which has a 4 bit Energy Performance Preference Hint. The support for this feature is indicated by CPUID.06H.ECX.bit3. Refer to Intel Architectures Software Developer's Manual for more info. Signed-off-by: Venkatesh Pallipadi --