Re: Seabios incompatible with Linux 2.6.26 host?

Pierre Riteau
2010-02-05T15:05:21Z

On 5 févr. 2010, at 15:46, Jan Kiszka wrote:

> Pierre Riteau wrote:
>> On 4 févr. 2010, at 15:34, Pierre Riteau wrote:
>>
>>> Hello,
>>> I'm having trouble running the latest qemu-kvm code on Debian Lenny (Linux 2.6.26).
>>> qemu-kvm dies with an error like this one:
>>> exception 13 (0)
>>> rax 0000000000000010 rbx 0000000000008c00 rcx 0000000000006ebe rdx 00000000000c8c00
>>> rsi 00000000e2010000 rdi 00000000000c0000 rsp 0000000000006eb4 rbp 00000000e2010000
>>> r8 0000000000000000 r9 0000000000000000 r10 0000000000000000 r11 0000000000000000
>>> r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000
>>> rip 00000000000fdeb0 rflags 00033002
>>> cs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> ds 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> es 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
>>> tr 0000 (feffd000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
>>> ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
>>> gdt f7a20/37
>>> idt f8aa0/0
>>> cr0 10 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
>>> code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 --> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>>>
>>> I think I traced back the issue to the switch from Bochs BIOS to Seabios. By forcing the usage of Bochs BIOS 5f08bb45861f54be478b25075b90d2406a0f8bb3 works, while it dies without the -bios override.
>>> Unfortunately, newer versions don't seem to work with Bochs BIOS.
>>>
>>> Upgrading the host kernel to 2.6.32 (Debian Squeeze) solves the issue. No problem on Fedora 12 as well.
>>
>>
>> Am I the only one to see this issue?
>>
>
> The oldest kernels I've running here are 2.6.27. They all run kvm-kmod,
> and they are all happy (mostly).
>
> Are you using the KVM support 2.6.26 provided or are you on some recent
> kvm-kmod? The latter is highly recommended for tons of reasons.
>
> Jan

I use the KVM modules provided by the distribution.

--
Pierre Riteau -- PhD student, Myriads team, IRISA, Rennes, France