From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: rjw@rjwysocki.net, tglx@linutronix.de, mingo@redhat.com,
bp@suse.de, peterz@infradead.org
Cc: x86@kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
tim.c.chen@linux.intel.com,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects
Date: Thu, 1 Sep 2016 13:33:42 -0700 [thread overview]
Message-ID: <1472762024-88771-7-git-send-email-srinivas.pandruvada@linux.intel.com> (raw)
In-Reply-To: <1472762024-88771-1-git-send-email-srinivas.pandruvada@linux.intel.com>
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 <srinivas.pandruvada@linux.intel.com>
---
drivers/acpi/bus.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 85b7d07..1001b92 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -330,6 +330,11 @@ static void acpi_bus_osc_support(void)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
+ if (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_HWP)) {
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT;
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
+ }
+
if (!ghes_disable)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
--
2.7.4
next prev parent reply other threads:[~2016-09-01 21:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-01 20:33 [PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 1/8] sched, x86: Add SD_ASYM_PACKING flags to x86 cpu topology for ITMT Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 2/8] sched: Extend scheduler's asym packing Srinivas Pandruvada
2016-09-08 8:01 ` Peter Zijlstra
2016-09-08 18:03 ` Tim Chen
2016-09-08 18:21 ` Peter Zijlstra
2016-09-01 20:33 ` [PATCH v2 3/8] x86, cpu: provide a function topology_num_packages to enumerate #packages Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 4/8] sched, x86: use arch_update_cpu_topology to indicate x86 need sched domain rebuild Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 5/8] sched,x86: Enable Turbo Boost Max Technology Srinivas Pandruvada
2016-09-08 7:59 ` Peter Zijlstra
2016-09-08 18:09 ` Tim Chen
2016-09-08 18:22 ` Peter Zijlstra
2016-09-08 18:28 ` Srinivas Pandruvada
2016-09-08 18:33 ` Peter Zijlstra
2016-09-08 18:41 ` Srinivas Pandruvada
2016-09-08 21:22 ` Rafael J. Wysocki
2016-09-01 20:33 ` Srinivas Pandruvada [this message]
2016-09-01 23:15 ` [PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects kbuild test robot
2016-09-01 23:46 ` Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 7/8] acpi: bus: Set _OSC for diverse core support Srinivas Pandruvada
2016-09-01 20:33 ` [PATCH v2 8/8] cpufreq: intel_pstate: Use CPPC to get max performance Srinivas Pandruvada
2016-09-01 22:31 ` kbuild test robot
2016-09-08 8:02 ` [PATCH v2 0/8] Support Intel® Turbo Boost Max Technology 3.0 Peter Zijlstra
2016-09-15 12:14 ` Pavel Machek
2016-09-15 12:46 ` One Thousand Gnomes
2016-09-16 16:03 ` Tim Chen
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