From 2b3ec765058449caa27e2806a939a4bffcbeba64 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Wed, 27 Apr 2016 15:48:08 -0700 Subject: 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 Signed-off-by: Rafael J. Wysocki --- Documentation/kernel-parameters.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'Documentation/kernel-parameters.txt') 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) -- cgit v1.2.3-59-g8ed1b