Loading vmm

From: <tuexen_at_freebsd.org>
Date: Sun, 14 Apr 2024 08:50:46 UTC
Dear all,

using the sources for kernel/world of yesterday running
kldload vmm
on a 128 core Ampere system runs just fine:

CPU  0: ARM Neoverse-N1 r3p1 affinity: 18  0  0
                  Cache Type = <64 byte D-cacheline,64 byte I-cacheline,PIPT ICache,64 byte ERG,64 byte CWG,IDC>
Instruction Set Attributes 0 = <DP,RDM,Atomic,CRC32,SHA2,SHA1,AES+PMULL>
Instruction Set Attributes 1 = <RCPC-8.3,DCPoP>
Instruction Set Attributes 2 = <>
        Processor Features 0 = <CSV3,CSV2,RAS,GIC,AdvSIMD+HP,FP+HP,EL3,EL2,EL1,EL0 32>
        Processor Features 1 = <PSTATE.SSBS MSR>
     Memory Model Features 0 = <TGran4,TGran64,TGran16,SNSMem,BigEnd,16bit ASID,256TB PA>
     Memory Model Features 1 = <XNX,PAN+ATS1E1,LO,HPD+TTPBHA,VH,16bit VMID,HAF+DS>
     Memory Model Features 2 = <EVT-8.2,32bit CCIDX,48bit VA,UAO,CnP>
            Debug Features 0 = <DoubleLock,SPE,2 CTX BKPTs,4 Watchpoints,6 Breakpoints,PMUv3p1,Debugv8p2>
            Debug Features 1 = <>
        Auxiliary Features 0 = <>
        Auxiliary Features 1 = <>
AArch32 Instruction Set Attributes 5 = <RDM,CRC32,SHA2,SHA1,AES+VMULL,SEVL>
AArch32 Media and VFP Features 0 = <FPRound,FPSqrt,FPDivide,DP VFPv3+v4,SP VFPv3+v4,AdvSIMD>
AArch32 Media and VFP Features 1 = <SIMDFMAC,FPHP Arith,SIMDHP Arith,SIMDSP,SIMDInt,SIMDLS,FPDNaN,FPFtZ>

However, doing the same on a 32 core Ampere system results in
the system becoming unresponsive. No reaction on the console,
no message there, no response over the network.

CPU  0: APM eMAG 8180 r3p2 affinity:  0  0
                Cache Type = <64 byte D-cacheline,64 byte I-cacheline,PIPT ICache,64 byte ERG,64 byte CWG>
Instruction Set Attributes 0 = <CRC32,SHA2,SHA1,AES+PMULL>
Instruction Set Attributes 1 = <>
Instruction Set Attributes 2 = <>
      Processor Features 0 = <GIC,AdvSIMD,FP,EL3,EL2,EL1 32,EL0 32>
      Processor Features 1 = <>
   Memory Model Features 0 = <TGran4,TGran64,TGran16,SNSMem,BigEnd,16bit ASID,4TB PA>
   Memory Model Features 1 = <8bit VMID>
Trying to mount root from ufs:/dev/ada0p2 [rw]...
   Memory Model Features 2 = <32bit CCIDX,48bit VA>
          Debug Features 0 = <DoubleLock,2 CTX BKPTs,4 Watchpoints,6 Breakpoints,PMUv3,Debugv8>
          Debug Features 1 = <>
      Auxiliary Features 0 = <>
      Auxiliary Features 1 = <>
AArch32 Instruction Set Attributes 5 = <CRC32,SHA2,SHA1,AES+VMULL,SEVL>
AArch32 Media and VFP Features 0 = <FPRound,FPSqrt,FPDivide,DP VFPv3+v4,SP VFPv3+v4,AdvSIMD>
AArch32 Media and VFP Features 1 = <SIMDFMAC,FPHP DP Conv,SIMDHP SP Conv,SIMDSP,SIMDInt,SIMDLS,FPDNaN,FPFtZ>

Any idea, what is going wrong?

Best regards
Michael