On Tue, 28 May 2024, Tero Kristo wrote: > From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> > > Each TPMI power domain includes a group of CPUs. Several power > management settings in this case applicable to a group of CPUs. > There can be several power domains in a CPU package. So, provide > interfaces for: > - Get power domain id for a Linux CPU > - Get mask of Linux CPUs in a power domain > > Hardware Punit uses different CPU numbering, which is not based on > APIC (Advanced Programmable Interrupt Controller) CPU numbering. > The Linux CPU numbering is based on APIC CPU numbering. Some PM features > like Intel Speed Select, the CPU core mask provided by the hardware is > based on the Punit CPU numbering. To use the core mask, this mask > needs to be converted to a Linux CPUs mask. So, provide interfaces for: > - Convert to a Linux CPU number from a Punit CPU number > - Convert to a Punit CPU number from a Linux CPU number > > On each CPU online, MSR 0x54 is used to read the mapping and stores in > a per cpu array. Create a hash for faster searching of a Linux CPU number > from a Punit CPU number. > > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> > [tero.kristo: minor updates] > Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> > Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxxxxxxxx> > --- > v2: > * changed to use X86_MATCH_VFM() instead of X86_MATCH_INTEL_FAM6_MODEL() I've applied this v2 + the other patches from v1 series now to review-ilpo branch. For the record, I removed "All rights reserved." lines from the patches while applying. I asking first (privately) a permission from Tero whether it's okay with him I remove those lines. -- i.
