On Wed, 2022-12-21 at 16:52 +0100, Pratyush Yadav wrote: > When a processor is brought offline and online again, it is unable to > use Turbo mode because the _PSS table does not contain the whole > turbo > frequency range, but only +1 MHz above the max non-turbo frequency. > This > causes problems when ACPI processor driver tries to set frequency > constraints. See patch 2 for more details. > Are you using some _PPC constraint to force to limit frequency? I did a offline/online with PPC=0 with no HWP, I can get to full turbo range. [ 121.237752] smpboot: CPU 1 is now offline [ 125.734886] x86: Booting SMP configuration: [ 125.734892] smpboot: Booting Node 0 Processor 1 APIC 0x2 [ 125.741007] intel_pstate: CPU 1 going online [ 125.741692] intel_pstate: CPU1 - ACPI _PSS perf data [ 125.741698] intel_pstate: *P0: 2301 MHz, 28000 mW, 0x2a00 [ 125.741703] intel_pstate: P1: 2300 MHz, 28000 mW, 0x1700 [ 125.741705] intel_pstate: P2: 2200 MHz, 26297 mW, 0x1600 [ 125.741707] intel_pstate: P3: 2000 MHz, 23263 mW, 0x1400 [ 125.741710] intel_pstate: P4: 1900 MHz, 21924 mW, 0x1300 [ 125.741712] intel_pstate: P5: 1800 MHz, 20612 mW, 0x1200 [ 125.741714] intel_pstate: P6: 1600 MHz, 17812 mW, 0x1000 [ 125.741716] intel_pstate: P7: 1500 MHz, 16581 mW, 0xf00 [ 125.741718] intel_pstate: P8: 1300 MHz, 13946 mW, 0xd00 [ 125.741720] intel_pstate: P9: 1200 MHz, 12796 mW, 0xc00 [ 125.741722] intel_pstate: P10: 1100 MHz, 11426 mW, 0xb00 [ 125.741724] intel_pstate: P11: 900 MHz, 9250 mW, 0x900 [ 125.741726] intel_pstate: P12: 800 MHz, 7965 mW, 0x800 [ 125.741729] intel_pstate: P13: 700 MHz, 6940 mW, 0x700 [ 125.741731] intel_pstate: P14: 500 MHz, 4738 mW, 0x500 [ 125.741733] intel_pstate: P15: 400 MHz, 3787 mW, 0x400 [ 125.741735] intel_pstate: _PPC limits will be enforced [ 125.741740] intel_pstate: policy->max > max non turbo frequency [ 125.741742] intel_pstate: cpu:1 min_policy_perf:4 max_policy_perf:42 [ 125.741745] intel_pstate: cpu:1 global_min:4 global_max:42 [ 125.741747] intel_pstate: cpu:1 max_perf_ratio:42 min_perf_ratio:4 [ 125.742243] intel_pstate: policy->max > max non turbo frequency [ 125.742247] intel_pstate: cpu:1 min_policy_perf:4 max_policy_perf:42 [ 125.742251] intel_pstate: cpu:1 global_min:4 global_max:42 [ 125.742255] intel_pstate: cpu:1 max_perf_ratio:42 min_perf_ratio:4 It is not clear how to get to this non turbo situation. Thanks, Srinivas > Pratyush Yadav (2): > acpi: processor: allow fixing up the frequency for a performance > state > cpufreq: intel_pstate: use acpi perflib to update turbo frequency > > drivers/acpi/processor_perflib.c | 40 > ++++++++++++++++++++++++++++++++ > drivers/cpufreq/intel_pstate.c | 5 ++-- > include/acpi/processor.h | 2 ++ > 3 files changed, 45 insertions(+), 2 deletions(-) > > -- > 2.38.1 >
