From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755891AbcHTAoX (ORCPT ); Fri, 19 Aug 2016 20:44:23 -0400 Received: from cloudserver094114.home.net.pl ([79.96.170.134]:54737 "HELO cloudserver094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754967AbcHTAoV (ORCPT ); Fri, 19 Aug 2016 20:44:21 -0400 From: "Rafael J. Wysocki" To: Srinivas Pandruvada Cc: mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, peterz@infradead.org, x86@kernel.org, bp@suse.de, sudeep.holla@arm.com, ak@linux.intel.com, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, alexey.klimov@arm.com, viresh.kumar@linaro.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, lenb@kernel.org, tim.c.chen@linux.intel.com, paul.gortmaker@windriver.com, jpoimboe@redhat.com, mcgrof@kernel.org, jgross@suse.com, robert.moore@intel.com, dvyukov@google.com, jeyu@redhat.com Subject: Re: [PATCH 09/11] acpi: bus: Enable HWP CPPC objects Date: Sat, 20 Aug 2016 02:49:56 +0200 Message-ID: <1871091.CP6iqTUKPK@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/4.8.0-rc1+; KDE/4.11.5; x86_64; ; ) In-Reply-To: <1471559812-19967-10-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1471559812-19967-1-git-send-email-srinivas.pandruvada@linux.intel.com> <1471559812-19967-10-git-send-email-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, August 18, 2016 03:36:50 PM Srinivas Pandruvada wrote: > Need to set platform wide _OSC bits to enable CPPC and CPPC version 2. > If platform supports CPPC, then BIOS exposess CPPC tables. > > Signed-off-by: Srinivas Pandruvada > --- > drivers/acpi/bus.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c > index 85b7d07..61643a5 100644 > --- a/drivers/acpi/bus.c > +++ b/drivers/acpi/bus.c > @@ -330,6 +330,13 @@ 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 Any chance to use IS_ENABLED() here too? > + > if (!ghes_disable) > capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; > if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) > Thanks, Rafael