On Thursday 13 January 2011 17:16:06 Gót András wrote:
> Is this an SMP kernel with more then 1 vcpus configured?
> 
> (SMP: Added CPU 0 (BSP))
> 
> Sergey G Nasonov wrote:
> > On Wednesday 12 January 2011 20:35:38 Colin Percival wrote:
> >> Hi,
> >>
> >> On 01/12/11 05:01, Sergey G Nasonov wrote:
> >>> I am sorry for intrusion. I have the same problem (pmap_init) running 
> >>> FreeBSD 8.2 r217259 i386 PV mode on Citrix XenServer 5.6. The server is 
> >>> IBM x3650 with intel Xeon 5405 
> >>> panic: pmap_init: page table page is out of range
> >>>
> >>> FreeBSD VM has 1GB memory. And this problem does not appear when I reduce 
> >>> amount of RAM to 512 MB. 
> >> Yeah, this is a completely separate bug from the one I'm trying to fix 
> >> right
> >> now -- good to know that it's easily reproduced, though, and very 
> >> interesting
> >> to hear that it depends on the amount of RAM you have.  Do you get the same
> >> panic with -CURRENT?  (I'm guessing you will given that the xen code is 
> >> very
> >> close to identical between 9.0 and 8.2, but always best to check...)
> >>
> >>
> > 
> > Hi,
> > 
> > CURRENT kernel goes to panic even with 512 MB RAM:
> > 
> > 
> > WARNING: loader(8) metadata is missing!
> > GDB: no debug ports present
> > KDB: debugger backends: ddb
> > KDB: current backend: ddb
> > APIC: Using the MPTable enumerator.
> > SMP: Added CPU 0 (BSP)
> > 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 9.0-CURRENT #5: Thu Jan 13 13:10:09 MSK 2011
> >     r...@fbsd8x32.bcc.:/usr/obj/usr/src/sys/XEN i386
> > WARNING: WITNESS option enabled, expect reduced performance.
> > Xen reported: 1995.001 MHz processor.
> > Timecounter "ixen" frequency 1953125 Hz quality 0
> > CPU: Intel(R) Xeon(R) CPU           E5405  @ 2.00GHz (1995.00-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=0xce33d<SSE3,DTES64,MON,DS_CPL,VMX,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1>
> >   AMD Features=0x20000000<LM>
> >   AMD Features2=0x1<LAHF>
> > Instruction TLB: 4 KB Pages, 4-way set associative, 128 entries
> > 1st-level instruction cache: 32 KB, 8-way set associative, 64 byte line size
> > 1st-level data cache: 32 KB, 8-way set associative, 64 byte line size
> > L2 cache: 6144 kbytes, 16-way associative, 64 bytes/line
> > real memory  = 536870912 (512 MB)
> > Physical memory chunk(s):
> > 0x000000000079b000 - 0x000000001f638fff, 518643712 bytes (126622 pages)
> > avail memory = 515637248 (491 MB)
> > 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
> > null: <null device, zero device>
> > io: <I/O>
> > nfslock: pseudo-device
> > random: <entropy source, Software, Yarrow>
> > [XEN] xen_rtc_probe: probing Hypervisor RTC clock
> > rtc0: <Xen Hypervisor Clock> on motherboard
> > [XEN] xen_rtc_attach: attaching Hypervisor RTC clock
> > rtc0: registered as a time-of-day clock (resolution 1000000us, adjustment 
> > 0.500000000s)
> > xenstore0: <XenStore> on motherboard
> > Device configuration finished.
> > procfs registered
> > Timecounters tick every 10.000 msec
> > [XEN] hypervisor wallclock nudged; nudging TOD.
> > lo0: bpf attached
> > xenbusb_front0: <Xen Frontend Devices> on xenstore0
> > 
> > 
> > Fatal trap 1: privileged instruction fault while in kernel mode
> > cpuid = 0; apic id = 00
> > instruction pointer= 0x21:0xc0334e5c
> > stack pointer        = 0x29:0xc21fec84
> > frame pointer        = 0x29:0xc21fec88
> > code segment= base 0x0, limit 0xfffff, type 0x1b
> > = DPL 1, pres 1, def32 xn0: <Virtual Network Interface> at device/vif/0 on 
> > xenbusb_front0
> > 1, gran 1
> > processor eflags= interrupt enabled, resume, IOPL = 0
> > current process= 11 (idle: cpu0)
> > [ thread pid 11 tid 100003 ]
> > Stopped at      outb_+0x6ac:    monitor
> > db> 


No, this is FreeBSD CURRENT VM with single vCPU. 
Adding additional vCPU lead to another problem. For example:

WARNING: loader(8) metadata is missing!
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
APIC: Using the MPTable enumerator.
SMP: Added CPU 0 (BSP)
SMP: Added CPU 1 (AP)
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 9.0-CURRENT #5: Thu Jan 13 13:10:09 MSK 2011
    r...@fbsd8x32.bcc.:/usr/obj/usr/src/sys/XEN i386
WARNING: WITNESS option enabled, expect reduced performance.
Xen reported: 1994.998 MHz processor.
Timecounter "ixen" frequency 1953125 Hz quality 0
CPU: Intel(R) Xeon(R) CPU           E5405  @ 2.00GHz (1995.00-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x10676  Family = 6  Model = 17  Stepping = 6
Instruction TLB: 4 KB Pages, 4-way set associative, 128 entries
1st-level instruction cache: 32 KB, 8-way set associative, 64 byte line size
1st-level data cache: 32 KB, 8-way set associative, 64 byte line size
L2 cache: 6144 kbytes, 16-way associative, 64 bytes/line
real memory  = 536870912 (512 MB)
Physical memory chunk(s):
0x000000000079b000 - 0x000000001f638fff, 518643712 bytes (126622 pages)
avail memory = 515637248 (491 MB)
gdtpfn=18ec63 pdptpfn=8930c
panic: HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, &ctxt): 
/usr/src/sys/i386/xen/mp_machdep.c:926
cpuid = 0
KDB: enter: panic
[ thread pid 0 tid 0 ]
Stopped at      kdb_enter+0x3a: movl    $0,kdb_why
db> 
  
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=0xce33d<SSE3,DTES64,MON,DS_CPL,VMX,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1>
  AMD Features=0x20000000<LM>
  AMD Features2=0x1<LAHF>


-- 
Best Regards,
Nasonov Sergey
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