Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-13 Thread Al Stone
On 8/13/19 3:59 PM, Rafael J. Wysocki wrote: > On Monday, August 5, 2019 7:03:38 PM CEST Al Stone wrote: >> According to the ACPI 6.3 specification, the _PSD method is optional >> when using CPPC. The underlying assumption appears to be that each CPU >> can change frequency independently from all

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-13 Thread Al Stone
On 8/13/19 3:57 PM, Rafael J. Wysocki wrote: > On Tuesday, August 13, 2019 4:00:56 PM CEST Al Stone wrote: >> On 8/5/19 11:03 AM, Al Stone wrote: >>> According to the ACPI 6.3 specification, the _PSD method is optional >>> when using CPPC. The underlying assumption appears to be that each CPU >>>

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-13 Thread Rafael J. Wysocki
On Monday, August 5, 2019 7:03:38 PM CEST Al Stone wrote: > According to the ACPI 6.3 specification, the _PSD method is optional > when using CPPC. The underlying assumption appears to be that each CPU > can change frequency independently from all other CPUs; _PSD is provided > to tell the OS

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-13 Thread Rafael J. Wysocki
On Tuesday, August 13, 2019 4:00:56 PM CEST Al Stone wrote: > On 8/5/19 11:03 AM, Al Stone wrote: > > According to the ACPI 6.3 specification, the _PSD method is optional > > when using CPPC. The underlying assumption appears to be that each CPU > > can change frequency independently from all

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-13 Thread Al Stone
On 8/5/19 11:03 AM, Al Stone wrote: > According to the ACPI 6.3 specification, the _PSD method is optional > when using CPPC. The underlying assumption appears to be that each CPU > can change frequency independently from all other CPUs; _PSD is provided > to tell the OS that some processors can

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-10 Thread Al Stone
On 8/7/19 5:41 AM, Sudeep Holla wrote: > On Mon, Aug 05, 2019 at 11:03:38AM -0600, Al Stone wrote: >> According to the ACPI 6.3 specification, the _PSD method is optional >> when using CPPC. The underlying assumption appears to be that each CPU >> can change frequency independently from all other

Re: [PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-07 Thread Sudeep Holla
On Mon, Aug 05, 2019 at 11:03:38AM -0600, Al Stone wrote: > According to the ACPI 6.3 specification, the _PSD method is optional > when using CPPC. The underlying assumption appears to be that each CPU > can change frequency independently from all other CPUs; _PSD is provided > to tell the OS

[PATCH] ACPI / CPPC: do not require the _PSD method when using CPPC

2019-08-05 Thread Al Stone
According to the ACPI 6.3 specification, the _PSD method is optional when using CPPC. The underlying assumption appears to be that each CPU can change frequency independently from all other CPUs; _PSD is provided to tell the OS that some processors can NOT do that. However, the acpi_get_psd()