[Bug 258776] 13.0-RELEASE Installation media kernel panic under Qemu/KVM

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258776

--- Comment #5 from Yann Droneaud <yann@droneaud.fr> ---
(In reply to Yann Droneaud from comment #4)

Switching from "host" CPU model to EPYC CPU model as guest CPU, the kernel
messages are modified this way:
  -CPU: AMD EPYC-Milan Processor (3393.63-MHz K8-class CPU)
  -  Origin="AuthenticAMD"  Id=0xa00f11  Family=0x19  Model=0x1  Stepping=1
  +CPU: AMD EPYC Processor (3393.62-MHz K8-class CPU)
  +  Origin="AuthenticAMD"  Id=0x800f12  Family=0x17  Model=0x1  Stepping=2
    
Features=0x783fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2>
  - 
Features2=0xfff83203<SSE3,PCLMULQDQ,SSSE3,FMA,CX16,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND,HV>
  + 
Features2=0xfef83203<SSE3,PCLMULQDQ,SSSE3,FMA,CX16,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND,HV>
     AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  -  AMD
Features2=0xc003f7<LAHF,CMP,SVM,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,Topology,PCXC>
  -  Structured Extended
Features=0x219c07ab<FSGSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,SHA>
  -  Structured Extended Features2=0x40060c<UMIP,PKU,VAES,VPCLMULQDQ,RDPID>
  -  Structured Extended Features3=0xac000010<FSRM,IBPB,STIBP,ARCH_CAP,SSBD>
  -  XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  -  IA32_ARCH_CAPS=0x69<RDCL_NO,SKIP_L1DFL_VME,MDS_NO>
  -  AMD Extended Feature Extensions ID
EBX=0x300d205<CLZERO,XSaveErPtr,WBNOINVD,IBPB,IBRS,STIBP,SSBD,VIRT_SSBD>
  +  AMD Features2=0x4003f5<LAHF,SVM,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,Topology>
  +  Structured Extended
Features=0x209c01a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,RDSEED,ADX,SMAP,CLFLUSHOPT,SHA>
  +  XSAVE Features=0x7<XSAVEOPT,XSAVEC,XINUSE>
     SVM: NP,NRIP,NAsids=16

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