Re: [kvm-devel] FreeBSD image hangs during boot

[Aurelien J. <aur...@au...>]

Aurelien Jarno a écrit :
> Avi Kivity a écrit :
>> Aurelien Jarno wrote:
>>> Avi Kivity a écrit :
>>>   
>>>> Aurelien Jarno wrote:
>>>>     
>>>>> Hi all,
>>>>>
>>>>> That's not something new, but I never seen the problem mentioned here.
>>>>> FreeBSD does not work on KVM, approximately since the lapic merge.
>>>>>
>>>>> However, that does not seem related to lapic, as using -no-kvm-irqchip
>>>>> does not help. With -no-kvm I get a page fault in kernel mode, while the
>>>>> normal QEMU (0.9.0 or CVS) does not have this problem.
>>>>>
>>>>> This can be easily reproduced with the latest installation CD:
>>>>> ftp://ftp.freebsd.org/pub/FreeBSD/ISO-IMAGES-i386/6.2/6.2-RELEASE-i386-bootonly.iso
>>>>>
>>>>>   
>>>>>       
>>>> It complains about the RSDT checksum.  Running with -no-acpi works 
>>>> around the problem (it gets to some country selection screen).  So it 
>>>> looks like the ACPI tables are messed up.
>>>>     
>>> The RSDT checksum problem is not new, but it was harmless on previous
>>> versions (like kvm-37).
>>>
>>> Using -no-acpi, I am able to boot the machine with -no-kvm, but the
>>> guest still hang with -no-acpi and with -no-kvm-irqchip or lapic
>>> enabled. At least on AMD64, I haven't tested yet on an Intel machine.
>>>
>>>   
>> Looks like there is a compiler problem that's interfering here.  A bios 
>> compiled on one machine will boot fine on Intel, but on other machines 
>> (unfortunately my work machines) will not.
>>
>> There is a separate issue with -no-acpi on AMD.  Is there some version 
>> where -no-acpi worked on AMD?
> 
> It was working correctly before, up to kvm version 37.
> 
> I also confirm that using -no-acpi fixes the problem. However, I have
> seen strange data corruption, even on Intel.
> 
> Basically, booting a recently installed FreeBSD leads to the following
> message from the bootloader: "No kernel found". And the next time, I get
> from the *BIOS*: "Boot from Hard Disk failed: not a bootable disk".
> 
> Looking at the disk image, the partition table (and maybe more?) has
> disappeared. This is with a raw image disk.
> 
> If I pass either -no-kvm or -no-kvm-irqchip, the problem disappear.

I have just got the problem with -no-kvm-irqchip, though it seems to
happen less often.

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   au...@de...         | aur...@au...
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