Kernel panic on FreeBSD 8.0 RELEASE when starting kernel

[G VM]

Deploy IS INFO wrote:
>
>
> G VM wrote:
>>   Deploy IS INFO wrote:
>> > Hi,
>> >
>> > You can run (in theory) any FreeBSD on a hardware that has HVM
>> > support. You can check that with xm info. You can only run FreeBSD 8
>> > as a PV guest with 32bit arch and hvm-pv with amd64. For the pv or
>> the
>> > hvm-pv mode you have to compile the XEN (for 32bit) or XENHVM (amd64)
>> > kernel config.
>> >
>> > You'll have to install FreeBSD as a hvm guest and after a successful
>> > install you may go on with the above mentioned kernels.
>> >
>> > For pv mode use only 1 vcpu and max 2 for hvm-pv.
>> >
>> > Regards,
>> > Andras
>> >
>> > G VM wrote:
>> >> Justin T. Gibbs wrote:
>> >>> On 1/24/2010 4:54 PM, G VM wrote:
>> >>>
>> >>>> Hi all,
>> >>>>
>> >>>> I wanted to try running FreeBSD as a guest os.
>> >>>>
>> >> I followed the instructions on this url.
>> >> http://www.ita.com.ua/eng/articles.htm?id=34
>> >>
>> >> I am not sure what Xen exactly does. Does it uses the kernel on the
>> >> dom0? Or does it both uses the bsd kernel on the dom0 and a modified
>> >> kernel on domU?
>> >> I do not have a done:
>> >>
>> >> make buildkernel KERNCONF=/XEN
>> >>
>> >> Is this necessary? I thought xen support was included in the kernel.
>> >>
>> >> Do note the instructions I followed. I used those.
>> >> /
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> freebsd-xen at freebsd.org mailing list
>> >> http://lists.freebsd.org/mailman/listinfo/freebsd-xen
>> >> To unsubscribe, send any mail to
>> "freebsd-xen-unsubscribe at freebsd.org"
>> >
>> >
>> # xm info
>> host : backupserver
>> release : 2.6.18-164.9.1.el5xen
>> version : #1 SMP Tue Dec 15 21:31:37 EST 2009
>> machine : x86_64
>> nr_cpus : 2
>> nr_nodes : 1
>> cores_per_socket : 2
>> threads_per_core : 1
>> cpu_mhz : 2210
>> hw_caps :
>> 178bf3ff:ebd3fbff:00000000:00000010:00002001:00000000:0
>> 000001f:00000000
>> virt_caps : hvm
>> total_memory : 2046
>> free_memory : 512
>> node_to_cpu : node0:0-1
>> node_to_memory : node0:512
>> xen_major : 3
>> xen_minor : 4
>> xen_extra : .2
>> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
>> hvm-3.0-x
>> 86_32p hvm-3.0-x86_64
>> xen_scheduler : credit
>> xen_pagesize : 4096
>> platform_params : virt_start=0xffff800000000000
>> xen_changeset : unavailable
>> cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)
>> cc_compile_by : root
>> cc_compile_domain : gitco.tld
>> cc_compile_date : Wed Nov 11 21:16:28 CET 2009
>> xend_config_format : 4
>>
>> So this seems ok.
>>
>> My dom0 is x86_64.
>> Does this mean I have to use hvm-pv (XENHVM) -> FreeBSD amd64 install?
>> Or can I run the i386 pv (XEN) on a 64 bit dom0 too?
>> Does this also needs a copy of the compiled kernel to the dom0?
>>
>> Do note that the default 8.0-RELEASE cd does panic (this is part of the
>> config, when trying to do a normal install to compile the new kernel
>> (that is why I used VMware to compile the kernel)):
>> ...
>>
>> builder = "hvm"
>> kernel = "/usr/lib/xen/boot/hvmloader"
>> device_model = "/usr/lib64/xen/bin/qemu-dm"
>>
>> ...
>>
>
> Hi,
>
> You can any guests arch that fits into the xm info's xen cap line, so
> a 32bit pv guest is not a problem for you. We use the following
> example config:
>
> kernel = "/usr/lib/xen/boot/hvmloader"
> #kernel = "/path/to/pvkernel"
> builder='hvm'
> memory = 1024
> name = "FreeBSD8"
> vif = [ '' ]
> disk = [ 'phy:/dev/volgroup/freebsd-lv-rootfs,hda,w',
> 'file:/path/to/8.0-RELEASE-amd64-disc1.iso,hdd:cdrom,r' ]
> boot="cda"
> vnc=1
> vncpasswd='ihavepassword'
> #vcpus='2'
>
> The commented parts are should be tried only after a succesful install
> and of course the amd64 iso could be an i386 also. Under 3.3.1 Xen it
> works one a X2270 test server and a x2250 prod server.
>
> Regards,
> Andras
>
>
I used the config you provided and have a 8.0-RELEASE x86 cd.
When I boot from the CD the kernel panics:
AMD Features2=....
real memory = ... 500MB
avail memory = ... 471MB
panic: vm_fault: fault on nofault entry, addr: c3253000
cpuid = 0

:S That is the reason I compiled the kernel in VMware as I can install
FreeBSD there.
BUt then I got the panic I have in the beginning of this mailling list
topic.
If I am not mistaken I also tried the AMD64 cd and that did fail also.
However when using 7.2 it just works ok.

Anyone an idea?
BTW, thanks so far for your help guys!