From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966415AbcKXTzf (ORCPT ); Thu, 24 Nov 2016 14:55:35 -0500 Received: from terminus.zytor.com ([198.137.202.10]:46772 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S941141AbcKXTy3 (ORCPT ); Thu, 24 Nov 2016 14:54:29 -0500 Date: Thu, 24 Nov 2016 11:54:21 -0800 From: tip-bot for Srinivas Pandruvada Message-ID: Cc: linux-kernel@vger.kernel.org, tim.c.chen@linux.intel.com, srinivas.pandruvada@linux.intel.com, hpa@zytor.com, tglx@linutronix.de, mingo@kernel.org Reply-To: srinivas.pandruvada@linux.intel.com, tim.c.chen@linux.intel.com, linux-kernel@vger.kernel.org, hpa@zytor.com, tglx@linutronix.de, mingo@kernel.org In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/core] acpi/bus: Enable HWP CPPC objects Git-Commit-ID: 5c2832e91a3ed45f35531ae1c5afba8eac22c81f X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 5c2832e91a3ed45f35531ae1c5afba8eac22c81f Gitweb: http://git.kernel.org/tip/5c2832e91a3ed45f35531ae1c5afba8eac22c81f Author: Srinivas Pandruvada AuthorDate: Tue, 22 Nov 2016 12:23:58 -0800 Committer: Thomas Gleixner CommitDate: Thu, 24 Nov 2016 20:44:20 +0100 acpi/bus: Enable HWP CPPC objects Need to set platform wide _OSC bits to enable CPPC and CPPC version 2. If platform supports CPPC, then BIOS exposes CPPC tables. The primary reason to enable CPPC support is to get the maximum performance of each CPU to check and enable Intel Turbo Boost Max Technology 3.0 (ITMT). Signed-off-by: Srinivas Pandruvada Signed-off-by: Tim Chen Cc: linux-pm@vger.kernel.org Cc: peterz@infradead.org Cc: jolsa@redhat.com Cc: rjw@rjwysocki.net Cc: linux-acpi@vger.kernel.org Cc: bp@suse.de Link: http://lkml.kernel.org/r/a696f6b17843cee9a542482fae6abab087be9587.1479844244.git.tim.c.chen@linux.intel.com Signed-off-by: Thomas Gleixner --- drivers/acpi/bus.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 56190d0..2f381ba 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -331,6 +331,13 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; +#ifdef CONFIG_X86 + if (boot_cpu_has(X86_FEATURE_HWP)) { + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT; + } +#endif + if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))