FreeBSD 8, PV, i386 panic with vcpus > 1

[K. Macy]

Correct, I put much of the infrastructure in place but did not end up
"debugging it in to existence."


Cheers
On Tuesday, July 26, 2011, Sean Bruno <seanbru at yahoo-inc.com> wrote:
> I assume then, that the i386 PV instance cannot do more than 1 CPU at
> this time?
>
> sean
>
>
>
> Started domain ref8-xen32 (id=120)
> WARNING: loader(8) metadata is missing!
> GDB: no debug ports present
> KDB: debugger backends: ddb
> KDB: current backend: ddb
> Copyright (c) 1992-2011 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 8.2-STABLE #1 r224449: Tue Jul 26 09:53:36 PDT 2011
>
> sbruno at ref8-xen32.freebsd.org:/usr/obj/dumpster/scratch/sbruno-scratch/8/sys/XEN
i386
> WARNING: WITNESS option enabled, expect reduced performance.
> Xen reported: 2493.746 MHz processor.
> Timecounter "ixen" frequency 1953125 Hz quality 0
> CPU: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz (2493.75-MHz
> 686-class CPU)
>  Origin = "GenuineIntel"  Id = 0x10676  Family = 6  Model = 17
> Stepping = 6
>
>
Features=0xbfe3fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>
>
Features2=0xce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1>
>  AMD Features=0x20100000<NX,LM>
>  AMD Features2=0x1<LAHF>
>  TSC: P-state invariant
> real memory  = 805306368 (768 MB)
> avail memory = 777650176 (741 MB)
> gdtpfn=20103f pdptpfn=3d0be
> panic: HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu,
> &ctxt): /dumpster/scratch/sbruno-scratch/8/sys/i386/xen/mp_machdep.c:930
> cpuid = 0
> KDB: enter: panic
> [thread pid 0 tid 0 ]
> Stopped at      kdb_enter+0x3a: movl    $0,kdb_why
> db>
> db>
> db>
> db> bt
> Tracing pid 0 tid 0 td 0xc03dec90
> kdb_enter(c0369837,c0369837,c03915fd,c06b4ca8,0,...) at kdb_enter+0x3a
> panic(c03915fd,c03983a2,c0398124,3a2,c0398124,...) at panic+0x134
> start_all_aps(c0396bf2,1,c03b2890,c036e574,0,...) at start_all_aps+0x7d4
> cpu_mp_start(c03f3234,c036e574,0,1,fffffff,...) at cpu_mp_start+0x155
> smp_topo_find(0,6040800,6040800,6b9000,0,...) at smp_topo_find+0xbf
> mi_startup(6b9000,0,0,0,0,...) at mi_startup+0xac
> btext() at btext+0x95
>
>
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