The last time I checked, FreeBSD/DomU was highly buggy, and this
includes SMP support.

I never managed to get around to figuring out what wasn't being locked
correctly. :/


Adrian


On 1 April 2010 00:49, Guillaume Seigneuret <g...@omegacube.fr> wrote:
> Dear all,
>
>
>
> When I try to make FreeBSD work in Xen domU with multiple vcups, I got a
> kernel panic. If someone have a clue .
>
>
>
> I got the following error :
>
>
>
> WARNING: loader(8) metadata is missing!
>
> GDB: no debug ports present
>
> KDB: debugger backends: ddb
>
> KDB: current backend: ddb
>
> Copyright (c) 1992-2010 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 9.0-CURRENT #1: Tue Mar 23 20:38:17 CET 2010
>
>    drgk...@redproxy2:/usr/obj/usr/src/sys/XEN i386
>
> WARNING: WITNESS option enabled, expect reduced performance.
>
> Xen reported: 2526.982 MHz processor.
>
> Timecounter "ixen" frequency 1000000000 Hz quality 0
>
> CPU: Intel(R) Xeon(R) CPU           X3440  @ 2.53GHz (2526.98-MHz 686-class
> CPU)
>
>  Origin = "GenuineIntel"  Id = 0x106e5  Family = 6  Model = 1e  Stepping =
> 5
>
>
> 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=0x98e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PD
> CM,SSE4.1,SSE4.2,POPCNT>
>
>  AMD Features=0x28100000<NX,RDTSCP,LM>
>
>  AMD Features2=0x1<LAHF>
>
>  TSC: P-state invariant
>
>
>
> Data TLB: 4 KB pages, 4-way set associative, 64 entries
>
> 1st-level data cache: 32 KB, 8-way set associative, 64 byte line size
>
> L2 cache: 256 kbytes, 8-way associative, 64 bytes/line
>
> real memory  = 536870912 (512 MB)
>
> Physical memory chunk(s):
>
> 0x00000000007f0000 - 0x000000001f638fff, 518295552 bytes (126537 pages)
>
> avail memory = 515362816 (491 MB)
>
> APIC: Using the MPTable enumerator.
>
> SMP: Added CPU 0 (BSP)
>
> ULE: setup cpu 0
>
> [XEN] IPI cpu=0 irq=128 vector=RESCHEDULE_VECTOR (0)
>
> [XEN] IPI cpu=0 irq=129 vector=CALL_FUNCTION_VECTOR (1)
>
> Event-channel device installed.
>
> mem: <memory>
>
> Pentium Pro MTRR support enabled
>
> nfslock: pseudo-device
>
> null: <null device, zero device>
>
> random: <entropy source, Software, Yarrow>
>
> io: <I/O>
>
> crypto: <crypto core>
>
> Grant table initialized
>
> xenbus0: <Xen Devices> on motherboard
>
> xc0: <Xen Console> on motherboard
>
> kernel trap 12 with interrupts disabled
>
> Fatal trap 12: page fault while in kernel mode
>
> cpuid = 0; apic id = 00
>
> fault virtual address   = 0x8
>
> fault code              = supervisor read, page not present
>
> instruction pointer     = 0x21:0xc0389142
>
> stack pointer           = 0x29:0xc06c6ad8
>
> frame pointer           = 0x29:0xc06c6af0
>
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>
>                        = DPL 1, pres 1, def32 1, gran 1
>
> processor eflags        = resume, IOPL = 0
>
> current process         = 0 (swapper)
>
> [ thread pid 0 tid 100000 ]
>
> Stopped at      intr_execute_handlers+0x12:     movl    0x8(%ebx),%eax
>
> db>
>
> db>
>
> db> show alllocks
>
> Process 0 (kernel) thread 0xc044f430 (100000)
>
> exclusive sleep mutex Giant (Giant) r = 0 (0xc0450c50) locked @
> /usr/src/sys/kern/kern_module.c:117
>
>
>
>
>
> Or :
>
>
>
> Started domain RedProxy2 (id=23)
>
> WARNING: loader(8) metadata is missing!
>
> GDB: no debug ports present
>
> KDB: debugger backends: ddb
>
> KDB: current backend: ddb
>
> Copyright (c) 1992-2010 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 9.0-CURRENT #1: Tue Mar 23 20:38:17 CET 2010
>
>    drgk...@redproxy2:/usr/obj/usr/src/sys/XEN i386
>
> WARNING: WITNESS option enabled, expect reduced performance.
>
> Xen reported: 2526.984 MHz processor.
>
> Timecounter "ixen" frequency 1000000000 Hz quality 0
>
> CPU: Intel(R) Xeon(R) CPU           X3440  @ 2.53GHz (2526.98-MHz 686-class
> CPU)
>
>  Origin = "GenuineIntel"  Id = 0x106e5  Family = 6  Model = 1e  Stepping =
> 5
>
>
> 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=0x98e3fd<SSE3,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PD
> CM,SSE4.1,SSE4.2,POPCNT>
>
>  AMD Features=0x28100000<NX,RDTSCP,LM>
>
>  AMD Features2=0x1<LAHF>
>
>  TSC: P-state invariant
>
>
>
> Data TLB: 4 KB pages, 4-way set associative, 64 entries
>
> 1st-level data cache: 32 KB, 8-way set associative, 64 byte line size
>
> L2 cache: 256 kbytes, 8-way associative, 64 bytes/line
>
> real memory  = 536870912 (512 MB)
>
> Physical memory chunk(s):
>
> 0x00000000007f0000 - 0x000000001f638fff, 518295552 bytes (126537 pages)
>
> avail memory = 515362816 (491 MB)
>
> APIC: Using the MPTable enumerator.
>
> SMP: Added CPU 0 (BSP)
>
> SMP: Added CPU 1 (AP)
>
> gdtpfn=219746 pdptpfn=5cc05
>
> panic: HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, &ctxt):
> /usr/src/sys/i386/xen/mp_machdep.c:927
>
> cpuid = 0
>
> KDB: enter: panic
>
>
>
> Here are the kernel informations :
>
> uname -a
>
> FreeBSD RedProxy2 9.0-CURRENT FreeBSD 9.0-CURRENT
>
>
>
> Kernel conf :
>
> #
>
> # XEN -- Kernel configuration for i386 XEN DomU
>
> #
>
> # $FreeBSD: src/sys/i386/conf/XEN,v 1.13 2010/03/13 09:21:00 ed Exp $
>
>
>
> cpu        I686_CPU
>
> ident      XEN
>
>
>
> makeoptions    DEBUG=-g         # Build kernel with gdb(1) debug symbols
>
> makeoptions    MODULES_OVERRIDE=""
>
>
>
> options    SCHED_ULE            # ULE scheduler
>
> options    PREEMPTION           # Enable kernel thread preemption
>
> #options   SCHED_4BSD
>
>
>
> options    INET                 # InterNETworking
>
> options    INET6                        # IPv6 communications protocols
>
> options    SCTP                 # Stream Control Transmission Protocol
>
> options    FFS          # Berkeley Fast Filesystem
>
> options    SOFTUPDATES          # Enable FFS soft updates support
>
> options    UFS_ACL                      # Support for access control lists
>
> options    UFS_DIRHASH          # Improve performance on big directories
>
> options    UFS_GJOURNAL         # Enable gjournal-based UFS journaling
>
> options    NFSCLIENT            # Network Filesystem Client
>
> options    NFSSERVER            # Network Filesystem Server
>
> options    NFSLOCKD             # Network Lock Manager
>
> options    NFS_ROOT             # NFS usable as /, requires NFSCLIENT
>
> options    MSDOSFS                      # MSDOS Filesystem
>
> options    CD9660                       # ISO 9660 Filesystem
>
> options    PROCFS                       # Process filesystem (requires
> PSEUDOFS)
>
> options    PSEUDOFS             # Pseudo-filesystem framework
>
> options    GEOM_PART_GPT                # GUID Partition Tables.
>
> options    GEOM_LABEL           # Provides labelization
>
> options    COMPAT_FREEBSD4              # Compatible with FreeBSD4
>
> options    COMPAT_FREEBSD5              # Compatible with FreeBSD5
>
> options    COMPAT_FREEBSD6              # Compatible with FreeBSD6
>
> options    COMPAT_FREEBSD7              # Compatible with FreeBSD7
>
> options    KTRACE                       # ktrace(1) support
>
> options    STACK                        # stack(9) support
>
> options    SYSVSHM                      # SYSV-style shared memory
>
> options    SYSVMSG                      # SYSV-style message queues
>
> options    SYSVSEM                      # SYSV-style semaphores
>
> options    _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
>
> options    KBD_INSTALL_CDEV     # install a CDEV entry in /dev
>
> options    AUDIT                        # Security event auditing
>
>
>
> # Debugging for use in -current
>
> options    KDB          # Enable kernel debugger support.
>
> options    DDB          # Support DDB.
>
> options    GDB          # Support remote GDB.
>
> options    DEADLKRES            # Enable the deadlock resolver
>
> options    INVARIANTS           # Enable calls of extra sanity checking
>
> options    INVARIANT_SUPPORT    # Extra sanity checks of internal
> structures, required by INVARIANTS
>
> options    WITNESS                      # Enable checks to detect deadlocks
> and cycles
>
> options    WITNESS_SKIPSPIN     # Don't run witness on spinlocks for speed
>
>
>
> options    PAE
>
> nooption   NATIVE
>
> option     XEN
>
> nodevice   atpic
>
> nodevice   isa
>
> options    MCLSHIFT=12
>
>
>
> # To make an SMP kernel, the next two lines are needed
>
> options    SMP          # Symmetric MultiProcessor Kernel
>
> device     apic                 # I/O APIC
>
>
>
>
>
> #device    atkbdc               # AT keyboard controller
>
> #device    atkbd                # AT keyboard
>
> device     psm  # PS/2 mouse
>
> device     pci
>
>
>
> #device    kbdmux               # keyboard multiplexer
>
>
>
> # Pseudo devices.
>
> device     loop         # Network loopback
>
> device     random               # Entropy device
>
> device     ether                # Ethernet support
>
> device     tun  # Packet tunnel.
>
> device     pty  # Pseudo-ttys (telnet etc)
>
> device     md   # Memory "disks"
>
> device     gif  # IPv6 and IPv4 tunneling
>
> device     faith                # IPv6-to-IPv4 relaying (translation)
>
>
>
> # The `bpf' device enables the Berkeley Packet Filter.
>
> # Be aware of the administrative consequences of enabling this!
>
> # Note that 'bpf' is required for DHCP.
>
> device     bpf  # Berkeley packet filter
>
>
>
> device     pf
>
> device     pfsync
>
> device     pflog
>
> device     carp
>
>
>
> option     IPSEC
>
> option     IPSEC_ESP
>
> device     crypto
>
>
>
> options         ALTQ
>
> options         ALTQ_CBQ        # Class Bases Queuing (CBQ)
>
> options         ALTQ_RED        # Random Early Detection (RED)
>
> options         ALTQ_RIO        # RED In/Out
>
> options         ALTQ_HFSC       # Hierarchical Packet Scheduler (HFSC)
>
> options         ALTQ_PRIQ       # Priority Queuing (PRIQ)
>
> options         ALTQ_NOPCC      # Required for SMP build
>
>
>
> Informations about the Xen domU :
>
>
>
> Xen 3.4 amd 64 with 2.6.32-3-xen-amd64 linux kernel.
>
>
>
>
>
> Thanks by advance.
>
>
>
> Regards,
>
>
> Guillaume Seigneuret
>
> _______________________________________________
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> http://lists.freebsd.org/mailman/listinfo/freebsd-xen
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