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Date:      Mon, 01 Feb 2021 21:43:19 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 248659] Specific generations of intel chips lock up with P-states active
Message-ID:  <bug-248659-227-9JWAXDJyAr@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-248659-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-248659-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D248659

--- Comment #16 from Marco <fbsd_bugzilla@darthporker.freedom.nl> ---
I did the src upgrade from the 12.2-STABLE snapshot to=20
13.0-ALPHA3 #0 stable/13-c256220-g76dd854f47f4

$ dmesg | head -50
---<<BOOT>>---
Copyright (c) 1992-2021 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 13.0-ALPHA3 #0 stable/13-c256220-g76dd854f47f4: Sun Jan 31 15:10:40=
 UTC
2021
    root@harbinger.fritz.box:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
FreeBSD clang version 11.0.1 (git@github.com:llvm/llvm-project.git
llvmorg-11.0.1-0-g43ff75f2c3fe)
VT(efifb): resolution 3840x2160
CPU: Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz (2112.08-MHz K8-class CPU)
  Origin=3D"GenuineIntel"  Id=3D0x806ec  Family=3D0x6  Model=3D0x8e  Steppi=
ng=3D12
=20
Features=3D0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,=
MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
=20
Features2=3D0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSS=
E3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AE=
SNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=3D0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=3D0x121<LAHF,ABM,Prefetch>
  Structured Extended
Features=3D0x29c6fbf<FSGSBASE,TSCADJ,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPC=
ID,RTM,NFPUSG,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PROCTRACE>
  Structured Extended
Features3=3D0xbc000600<MCUOPT,MD_CLEAR,IBPB,STIBP,L1DFL,ARCH_CAP,SSBD>
  XSAVE Features=3D0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  IA32_ARCH_CAPS=3D0xab<RDCL_NO,IBRS_ALL,SKIP_L1DFL_VME,MDS_NO,TSX_CTRL>
  VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
  TSC: P-state invariant, performance statistics
real memory  =3D 17179869184 (16384 MB)
avail memory =3D 16221478912 (15470 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <LENOVO TP-N2H  >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 hardware threads

Without hint.hwpstate_intel.0.disabled=3D"1" in loader.conf the system still
randomly freezes.
With the hint set the system runs stable.. not a single freeze has happened
after over 24 hours of idling.

So we can add this gen 7 X1 Carbon to the list of systems that need the twe=
ak.

--=20
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