Hi,
I am running freebsd vm on debian 10 buster with libvirt/kvm/qemu.
I have several kvm hosts in the cluster. Some with various intel xeon and
others with AMD EPYC 7301 cpu.
FreeBSD vms upto 11.2-RELEASE-p9 boo fine on all systems when passing through
the host cpu using following libvirt xml
<cpu mode='host-model' check='partial'>
<model fallback='allow'/>
</cpu>
FreeBSD 12.0-RELEASE and later hang after boot when swithcing to usermode in
start_init: trying /sbin/init
Following is dmesg from a succesfull boot of 12.0-RELEASE using host-model on
Intel CPU
Copyright (c) 1992-2018 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 12.0-RELEASE-p3 GENERIC amd64
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on
LLVM 6.0.1)
VT(vga): text 80x25
CPU: QEMU Virtual CPU version 2.1.0 (2400.13-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x663 Family=0x6 Model=0x6 Stepping=3
Features=0x783fbfd<FPU,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2>
Features2=0x80a02001<SSE3,CX16,x2APIC,POPCNT,HV>
AMD Features=0x20100800<SYSCALL,NX,LM>
AMD Features2=0x1<LAHF>
Hypervisor: Origin = "KVMKVMKVM"
real memory = 1073741824 (1024 MB)
avail memory = 1000058880 (953 MB)
Event timer "LAPIC" quality 100
ACPI APIC Table: <BOCHS BXPCAPIC>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 4 package(s) x 1 core(s)
...
Following is dmesg from a succesfull boot of 12.0-RELEASE using host-model on
the qemu virtual cpu
Copyright (c) 1992-2018 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 12.0-RELEASE-p3 GENERIC amd64
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on
LLVM 6.0.1)
VT(vga): text 80x25
CPU: QEMU Virtual CPU version 2.1.0 (2200.06-MHz K8-class CPU)
Origin="AuthenticAMD" Id=0x663 Family=0x6 Model=0x6 Stepping=3
Features=0x783fbfd<FPU,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2>
Features2=0x80a02001<SSE3,CX16,x2APIC,POPCNT,HV>
AMD Features=0x20100800<SYSCALL,NX,LM>
AMD Features2=0x65<LAHF,SVM,ABM,SSE4A>
SVM: NAsids=16
Hypervisor: Origin = "KVMKVMKVM"
real memory = 4294967296 (4096 MB)
avail memory = 4099080192 (3909 MB)
Event timer "LAPIC" quality 100
ACPI APIC Table: <BOCHS BXPCAPIC>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 4 package(s) x 1 core(s)
Following is dmesg from a succesfull boot of 11.2-RELEASE using host-model on
AMD EPYC
Copyright (c) 1992-2018 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 11.2-RELEASE-p9 #0: Tue Feb 5 15:30:36 UTC 2019
[email protected]:/usr/obj/usr/src/sys/GENERIC
amd64
FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on
LLVM 6.0.0)
VT(vga): text 80x25
CPU: AMD EPYC Processor (with IBPB) (2200.05-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>
AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
AMD
Features2=0x8003f7<LAHF,CMP,SVM,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,PCXC>
Structured Extended
Features=0x201c01ab<FSGSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,RDSEED,ADX,SMAP,SHA>
XSAVE Features=0x7<XSAVEOPT,XSAVEC,XINUSE>
AMD Extended Feature Extensions ID EBX=0x2001000
SVM: NAsids=16
Hypervisor: Origin = "KVMKVMKVM"
real memory = 4294967296 (4096 MB)
avail memory = 4088360960 (3898 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <BOCHS BXPCAPIC>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 4 package(s)
...
And finally following is the failing verbose boot of 12.0-RELEASE on AMD-EPYC
Table 'FACP' at 0xbffe104e
Table 'APIC' at 0xbffe10c2
APIC: Found table at 0xbffe10c2
APIC: Using the MADT enumerator.
Copyright (c) 1992-2018 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 12.0-RELEASE-p3 GENERIC amd64
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on
LLVM 6.0.1)
Table 'FACP' at 0xbffe104e
Table 'APIC' at 0xbffe10c2
Table 'HPET' at 0xbffe1152
ACPI: No SRAT table found
PPIM 0: PA=0xb8000, VA=0xffffffff82810000, size=0x8000, mode=0
pmap: large map 8 PML4 slots (4096 Gb)
VT(vga): text 80x25
Preloaded elf kernel "/boot/kernel/kernel" at 0xffffffff8263e000.
Preloaded boot_entropy_cache "/boot/entropy" at 0xffffffff826471d0.
Table 'FACP' at 0xbffe104e
FACP: Found table at 0xbffe104e
Calibrating TSC clock ... TSC clock: 2200048246 Hz
CPU: AMD EPYC Processor (with IBPB) (2200.05-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>
AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
AMD
Features2=0x8003f7<LAHF,CMP,SVM,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,PCXC>
Structured Extended
Features=0x209c01ab<FSGSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,RDSEED,ADX,SMAP,CLFLUSHOPT,SHA>
XSAVE Features=0x7<XSAVEOPT,XSAVEC,XINUSE>
AMD Extended Feature Extensions ID EBX=0x2001000
SVM: Features=0x0
Revision=1, ASIDs=16
L1 2MB data TLB: 255 entries, 1-way associative
L1 2MB instruction TLB: 255 entries, 1-way associative
L1 4KB data TLB: 255 entries, 1-way associative
L1 4KB instruction TLB: 255 entries, 1-way associative
L1 data cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way associative
L1 instruction cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way
associative
L2 2MB unified TLB: 0 entries, disabled/not present
L2 4KB data TLB: 512 entries, 4-way associative
L2 4KB instruction TLB: 512 entries, 4-way associative
L2 unified cache: 512 kbytes, 64 bytes/line, 1 lines/tag, 16-way
associative
Hypervisor: Origin = "KVMKVMKVM"
real memory = 4294967296 (4096 MB)
Physical memory chunk(s):
0x0000000000001000 - 0x000000000009efff, 647168 bytes (158 pages)
0x0000000000103000 - 0x00000000001fffff, 1036288 bytes (253 pages)
0x0000000002800000 - 0x00000000b7d44fff, 3042201600 bytes (742725 pages)
0x0000000100000000 - 0x000000013ffe7fff, 1073643520 bytes (262120 pages)
avail memory = 4099080192 (3909 MB)
Table 'FACP' at 0xbffe104e
Table 'APIC' at 0xbffe10c2
Table 'HPET' at 0xbffe1152
ACPI: No DMAR table found
...
...
...
ata0: stat0=0x00 err=0x00 lsb=0x00 msb=0x00
ata0: stat1=0x00 err=0x00 lsb=0x00 msb=0x00
ata0: reset tp2 stat0=00 stat1=00 devices=0x0
ata1: reset tp1 mask=03 ostat0=00 ostat1=00
ata1: stat0=0x00 err=0x00 lsb=0x00 msb=0x00
ata1: stat1=0x00 err=0x00 lsb=0x00 msb=0x00
ata1: reset tp2 stat0=00 stat1=00 devices=0x0
Trying to mount root from ufs:/dev/vtbd0p2 [rw]...
atrtc0: providing initial system time
start_init: trying /sbin/init
uhub0: 2 ports with 2 removable, self powered
After that the system freezes.
I can provide more complete information if somebody tells me what would be
helpfull.
How should I go about debugging this ???
Greetings
Christian
--
Christian Kratzer CK Software GmbH
Email: [email protected] Wildberger Weg 24/2
Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden
Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart
Mobile: +49 171 1947 843 Geschaeftsfuehrer: Christian Kratzer
Web: http://www.cksoft.de/
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