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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2016-04-28 01:48:08 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-28 02:01:39 +0300
commit2b3ec765058449caa27e2806a939a4bffcbeba64 (patch)
tree4c5170e80c1b4f0c8eb4e323bfb821ae7d42b4ba /Documentation/kernel-parameters.txt
parent3be9200d512bfa8d6292f5dce6c02aa151821e09 (diff)
downloadlinux-2b3ec765058449caa27e2806a939a4bffcbeba64.tar.xz
cpufreq: intel_pstate: Enable PPC enforcement for servers
For platforms which are controlled via remove node manager, enable _PPC by default. These platforms are mostly categorized as enterprise server or performance servers. These platforms needs to go through some certifications tests, which tests control via _PPC. The relative risk of enabling by default is low as this is is less likely that these systems have broken _PSS table. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 31c094fb1141..1cffa3f24732 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1662,7 +1662,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
Only load intel_pstate on systems which support
hardware P state control (HWP) if available.
support_acpi_ppc
- Enforce ACPI _PPC performance limits.
+ Enforce ACPI _PPC performance limits. If the Fixed ACPI
+ Description Table, specifies preferred power management
+ profile as "Enterprise Server" or "Performance Server",
+ then this feature is turned on by default.
intremap= [X86-64, Intel-IOMMU]
on enable Interrupt Remapping (default)