Re: [PATCH] cpufreq: intel_pstate: Register when ACPI PCCH is present

2018-07-18 Thread Rafael J. Wysocki
On Wed, Jul 18, 2018 at 12:43 PM, Andreas Herrmann wrote: > On Tue, Jul 17, 2018 at 08:06:54PM +0200, Rafael J. Wysocki wrote: >> From: Rafael J. Wysocki >> >> Currently, intel_pstate doesn't load if _PSS is not present on >> HP Proliant systems, because it expects the firmware to take over >> CP

Re: [PATCH] cpufreq: intel_pstate: Register when ACPI PCCH is present

2018-07-18 Thread Andreas Herrmann
On Tue, Jul 17, 2018 at 08:06:54PM +0200, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki > > Currently, intel_pstate doesn't load if _PSS is not present on > HP Proliant systems, because it expects the firmware to take over > CPU performance scaling in that case. However, if ACPI PCCH is > p

[PATCH] cpufreq: intel_pstate: Register when ACPI PCCH is present

2018-07-17 Thread Rafael J. Wysocki
From: Rafael J. Wysocki Currently, intel_pstate doesn't load if _PSS is not present on HP Proliant systems, because it expects the firmware to take over CPU performance scaling in that case. However, if ACPI PCCH is present, the firmware expects the kernel to use it for CPU performance scaling a