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From: Huang Rui <ray.huang@amd.com>
To: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Shuah Khan <skhan@linuxfoundation.org>,
	"Borislav Petkov" <bp@suse.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>, <linux-pm@vger.kernel.org>
Cc: Deepak Sharma <deepak.sharma@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Mario Limonciello <mario.limonciello@amd.com>,
	Nathan Fontenot <nathan.fontenot@amd.com>,
	Jinzhou Su <Jinzhou.Su@amd.com>,
	Xiaojian Du <Xiaojian.Du@amd.com>, <linux-kernel@vger.kernel.org>,
	<x86@kernel.org>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH v2 01/21] x86/cpufreatures: add AMD Collaborative Processor Performance Control feature flag
Date: Sun, 26 Sep 2021 17:05:45 +0800	[thread overview]
Message-ID: <20210926090605.3556134-2-ray.huang@amd.com> (raw)
In-Reply-To: <20210926090605.3556134-1-ray.huang@amd.com>

Add Collaborative Processor Performance Control feature flag for AMD
processors.

This feature flag will be used on the following amd-pstate driver. The
amd-pstate driver has two approaches to implement the frequency control
behavior. That depends on the CPU hardware implementation. One is "Full
MSR Support" and another is "Shared Memory Support". The feature flag
indicates the current processors with "Full MSR Support".

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index d0ce5cfd3ac1..f23dc1abd485 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -313,6 +313,7 @@
 #define X86_FEATURE_AMD_SSBD		(13*32+24) /* "" Speculative Store Bypass Disable */
 #define X86_FEATURE_VIRT_SSBD		(13*32+25) /* Virtualized Speculative Store Bypass Disable */
 #define X86_FEATURE_AMD_SSB_NO		(13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */
+#define X86_FEATURE_AMD_CPPC		(13*32+27) /* Collaborative Processor Performance Control */
 
 /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */
 #define X86_FEATURE_DTHERM		(14*32+ 0) /* Digital Thermal Sensor */
-- 
2.25.1


  reply	other threads:[~2021-09-26  9:06 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-26  9:05 [PATCH v2 00/21] cpufreq: introduce a new AMD CPU frequency control mechanism Huang Rui
2021-09-26  9:05 ` Huang Rui [this message]
2021-09-26  9:05 ` [PATCH v2 02/21] x86/msr: add AMD CPPC MSR definitions Huang Rui
2021-09-26  9:05 ` [PATCH v2 03/21] ACPI: CPPC: Check online CPUs for determining _CPC is valid Huang Rui
2021-10-19 16:52   ` Rafael J. Wysocki
2021-10-20 11:15     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 04/21] ACPI: CPPC: add cppc enable register function Huang Rui
2021-09-28 17:06   ` Fontenot, Nathan
2021-10-13 12:28     ` Huang, Ray
2021-10-19 16:59   ` Rafael J. Wysocki
2021-10-20 11:13     ` Huang, Ray
2021-10-20 13:32       ` Rafael J. Wysocki
2021-10-21  3:41         ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 05/21] cpufreq: amd: introduce a new amd pstate driver to support future processors Huang Rui
2021-09-28 20:40   ` Fontenot, Nathan
2021-10-14 10:14     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 06/21] cpufreq: amd: add fast switch function for amd-pstate module Huang Rui
2021-09-26  9:05 ` [PATCH v2 07/21] cpufreq: amd: add acpi cppc function as the backend for legacy processors Huang Rui
2021-09-26  9:05 ` [PATCH v2 08/21] cpufreq: amd: add trace for amd-pstate module Huang Rui
2021-10-06  8:12   ` Giovanni Gherdovich
2021-10-21 10:19     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 09/21] cpufreq: amd: add boost mode support for amd-pstate Huang Rui
2021-09-26  9:05 ` [PATCH v2 10/21] cpufreq: amd: add amd-pstate checking support check attribute Huang Rui
2021-09-28 21:24   ` Fontenot, Nathan
2021-10-14 10:26     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 11/21] cpufreq: amd: add amd-pstate frequencies attributes Huang Rui
2021-09-28 21:35   ` Fontenot, Nathan
2021-10-14 10:35     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 12/21] cpufreq: amd: add amd-pstate performance attributes Huang Rui
2021-09-26  9:05 ` [PATCH v2 13/21] cpupower: add AMD P-state capability flag Huang Rui
2021-09-26  9:05 ` [PATCH v2 14/21] cpupower: add the function to check amd-pstate enabled Huang Rui
2021-09-26  9:05 ` [PATCH v2 15/21] cpupower: initial AMD P-state capability Huang Rui
2021-09-26  9:06 ` [PATCH v2 16/21] cpupower: add the function to get the sysfs value from specific table Huang Rui
2021-09-26  9:06 ` [PATCH v2 17/21] cpupower: add amd-pstate sysfs definition and access helper Huang Rui
2021-09-26  9:06 ` [PATCH v2 18/21] cpupower: enable boost state support for amd-pstate module Huang Rui
2021-09-26  9:06 ` [PATCH v2 19/21] cpupower: move print_speed function into misc helper Huang Rui
2021-09-26  9:06 ` [PATCH v2 20/21] cpupower: print amd-pstate information on cpupower Huang Rui
2021-09-26  9:06 ` [PATCH v2 21/21] Documentation: amd-pstate: add amd-pstate driver introduction Huang Rui
2021-10-13 16:23   ` Giovanni Gherdovich
2021-10-14 11:30     ` Huang, Ray

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