[Bug 218171] amd-pstate not loading on zen2 threadripper 3960x (trx40

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=218171

--- Comment #5 from Gino Badouri (badouri.g@gmail.com) ---
Hi Perry,

Thanks for looking into this.
I've updated to 6.7 rc2.

# uname -a
Linux pve 6.7.0-060700rc2-generic #202311192332 SMP PREEMPT_DYNAMIC Sun Nov 19
23:40:20 UTC 2023 x86_64 GNU/Linux

# cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-6.7.0-060700rc2-generic root=/dev/mapper/pve-root ro
quiet iommu=pt amd_iommu=on kvm_amd.npt=1 kvm_amd.avic=1 nmi_watchdog=0
video=vesafb:off video=efifb:off video=simplefb:off nomodeset
initcall_blacklist=sysfb_init modprobe.blacklist=nouveau
modprobe.blacklist=amdgpu modprobe.blacklist=radeon modprobe.blacklist=nvidia
hugepagesz=1G default_hugepagesz=2M amd_pstate=active

# lscpu
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         43 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  48
  On-line CPU(s) list:   0-47
Vendor ID:               AuthenticAMD
  BIOS Vendor ID:        Advanced Micro Devices, Inc.
  Model name:            AMD Ryzen Threadripper 3960X 24-Core Processor
    BIOS Model name:     AMD Ryzen Threadripper 3960X 24-Core Processor 
Unknown
                          CPU @ 3.8GHz
    BIOS CPU family:     107
    CPU family:          23
    Model:               49
    Thread(s) per core:  2
    Core(s) per socket:  24
    Socket(s):           1
    Stepping:            0
    Frequency boost:     enabled
    CPU(s) scaling MHz:  58%
    CPU max MHz:         3800.0000
    CPU min MHz:         2200.0000
    BogoMIPS:            7585.72
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mc
                         a cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall
n
                         x mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc
rep_go
                         od nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl
p
                         ni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2
movbe
                          popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy
sv
                         m extapic cr8_legacy abm sse4a misalignsse
3dnowprefetc
                         h osvw ibs skinit wdt tce topoext perfctr_core
perfctr_
                         nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3
hw_pstate
                          ssbd mba ibpb stibp vmmcall fsgsbase bmi1 avx2 smep
bm
                         i2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni
xsa
                         veopt xsavec xgetbv1 cqm_llc cqm_occup_llc
cqm_mbm_tota
                         l cqm_mbm_local clzero irperf xsaveerptr rdpru
wbnoinvd
                          amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale
vm
                         cb_clean flushbyasid decodeassists pausefilter
pfthresh
                         old avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid
ov
                         erflow_recov succor smca sev sev_es
Virtualization features: 
  Virtualization:        AMD-V
Caches (sum of all):     
  L1d:                   768 KiB (24 instances)
  L1i:                   768 KiB (24 instances)
  L2:                    12 MiB (24 instances)
  L3:                    128 MiB (8 instances)
NUMA:                    
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-47
Vulnerabilities:         
  Gather data sampling:  Not affected
  Itlb multihit:         Not affected
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Not affected
  Retbleed:              Mitigation; untrained return thunk; SMT enabled with
ST
                         IBP protection
  Spec rstack overflow:  Mitigation; Safe RET
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via
prctl
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user
pointer
                          sanitization
  Spectre v2:            Mitigation; Retpolines, IBPB conditional, STIBP
always-
                         on, RSB filling, PBRSB-eIBRS Not affected
  Srbds:                 Not affected
  Tsx async abort:       Not affected


Unfortunately the driver is still printing:
[    0.640246] amd_pstate: the _CPC object is not present in SBIOS or ACPI
disabled

If it helps, I've uploaded the acpi tables in both dat and dsl format here:
https://mega.nz/file/apkElTBL#JEmN0vmBSh7d-hbDiN-V0lwG7mwZQfitqnv4iVk0ACU

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