Re: [Intel AlderLake] Read&Write files to FAT32 or UFS partition cause data corrupt due to P-Core&E-Core

On Wed, 23 Feb 2022 01:30:28 +0200
Konstantin Belousov <kostikbel@gmail.com> wrote:

> On Tue, Feb 22, 2022 at 06:23:17PM -0500, Alexander Motin wrote:
> > On 22.02.2022 17:46, Konstantin Belousov wrote:
> > > Ok, the next step is to get the CPU feature reports from P- vs. E- cores.
> > > Patch below should work, with verbose boot.
> > 
> > Not much difference on that level:
> > 
> > --- zzzp        2022-02-22 18:18:24.531704000 -0500
> > +++ zzze        2022-02-22 18:18:18.631236000 -0500
> > @@ -1,22 +1,21 @@
> > -CPU 2: 12th Gen Intel(R) Core(TM) i7-12700K (3609.60-MHz K8-class CPU)
> > +CPU 16: 12th Gen Intel(R) Core(TM) i7-12700K (3609.60-MHz K8-class CPU)
> >    Origin="GenuineIntel"  Id=0x90672  Family=0x6  Model=0x97  Stepping=2
> > Features=0xbfebfbff<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>
> > Features2=0x7ffafbff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
> >    AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
> >    AMD Features2=0x121<LAHF,ABM,Prefetch>
> >    Structured Extended Features=0x239ca7eb<FSGSBASE,TSCADJ,BMI1,AVX2,FDPEXC,SMEP,BMI2,ERMS,INVPCID,NFPUSG,PQE,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,PROCTRACE,SHA>
> >    Structured Extended Features2=0x98c027ac<UMIP,PKU,WAITPKG,GFNI,VAES,VPCLMULQDQ,TME,RDPID,MOVDIRI,MOVDIR64B>
> >    Structured Extended Features3=0xfc1cc410<FSRM,MD_CLEAR,PCONFIG,IBT,IBPB,STIBP,L1DFL,ARCH_CAP,CORE_CAP,SSBD>
> >    XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
> >    IA32_ARCH_CAPS=0xd6b<RDCL_NO,IBRS_ALL,SKIP_L1DFL_VME,MDS_NO,TAA_NO>
> >    VT-x: Basic Features=0x3da0500<SMM,INS/OUTS,TRUE>
> >          Pin-Based Controls=0xff<ExtINT,NMI,VNMI,PreTmr,PostIntr>
> >          Primary Processor Controls=0xfffbfffe<INTWIN,TSCOff,HLT,INVLPG,MWAIT,RDPMC,RDTSC,CR3-LD,CR3-ST,CR8-LD,CR8-ST,TPR,NMIWIN,MOV-DR,IO,IOmap,MTF,MSRmap,MONITOR,PAUSE>
> >          Secondary Processor Controls=0xf5d7fff<APIC,EPT,DT,RDTSCP,x2APIC,VPID,WBINVD,UG,APIC-reg,VID,PAUSE-loop,RDRAND,INVPCID,VMFUNC,VMCS,XSAVES>
> >          Exit Controls=0x3da0500<PAT-LD,EFER-SV,PTMR-SV>
> >          Entry Controls=0x3da0500
> >          EPT Features=0x6f34141<XO,PW4,UC,WB,2M,1G,INVEPT,AD,single,all>
> >          VPID Features=0x10f01<INVVPID,individual,single,all,single-globals>
> >    TSC: P-state invariant, performance statistics
> > -64-Byte prefetching
> > -L2 cache: 1280 kbytes, 8-way associative, 64 bytes/line
> > +L2 cache: 2048 kbytes, 16-way associative, 64 bytes/line
> > 
> 
> Show me the full verbose dmesg of the boot then.
> 
> As another blind guess, try to disable pcid, vm.pmap.pcid_enabled=0.
> 

Hi.

Intel N100 is reported to crash without this tunable on 13.2 at
freebsd-users-jp ML (as this is a ML in Japanese, reported in
Japanese). [1]
Crashes with UFS, but ZFS is claimed to be OK.

N100 is an Alder Lake-N processor WITHOUT P-CORE. [2] [3]
So check logics on workarouund codes (IIRC, all are MFC'ed before 13.2)
wouldn't be working?

Sorry, I'm just a liaison here and do not have any actual affected
haedware (means that cannot test at all myself).

The reporter claims that the actual hardware is as follows.

 Beelink EQ12 intel N100, 16GB-DDR5,512GB M.2 SSD [4]

Working states are reported as follows.

 Installed to ZFS: OK

 Stock 13.2 without any custom tunalble:
  Crash with UFS

 Tunable vm.pmap.pcid_enabled=0 in /boot/loader.conf:
  No crash reported with situation below.
   *Add "vm.pmap.pcid_enabled=0" on /boot/loader (on installed geom)
    just after the installation finished.
   *Reboot to the installed partition.
   *`portsnap fetch extract`
   *`cd /usr/ports/ports-mgmt/portmaster ; make install clean`
   *`portmaster www/apache24`
  And any other operations after above are claimed OK.

 Tunable vm.pmap.pcid_invlpg_workaround=1 instead above:
  Better than stock 13.2, but crashes on `portmaster www/apache24`
  of the procedures above.


[1]
https://lists.freebsd.org/archives/freebsd-users-jp/2023-July/000205.html

[2]
https://www.intel.com/content/www/us/en/products/sku/231803/intel-processor-n100-6m-cache-up-to-3-40-ghz/specifications.html

[3] https://en.wikipedia.org/wiki/Alder_Lake

[4] https://www.bee-link.com/eq12-n100-clone-1-82615581


Regards.

-- 
Tomoaki AOKI    <junchoon@dec.sakura.ne.jp>