[SeaBIOS] IO APIC emulation failure with qemu-kvm

[Ravi Kumar Kulkarni]

On Sun, Feb 6, 2011 at 10:50 PM, Avi Kivity <avi at redhat.com> wrote:
> On 02/04/2011 03:58 PM, Jan Kiszka wrote:
>>
>> >   when i run my kernel image with qemu-kvm it gives emulation error
>> > failure
>> >  trying to execute the code outside ROM or RAM at fec00000(IO APIC base
>> > address)
>> >  but the same code runs fine with qemu. can anyone please point me
>> >  where might be the problem or how to find out this one?
>
> Please post the error message.
  Im attachin the error message in kvm.txt file  with  above mail.
>
>> Start with capturing the activity of you guest via ftrace, enabling all
>> kvm:* events. You may also try to attach gdb to qemu and analyze the
>> different code path in both versions (specifically if you have debugging
>> symbols for your guest).
>
> The easy way to do that is trace-cmd (http://lwn.net/Articles/341902/):
>
> $ trace-cmd record -e kvm -b 20000
> ...
> ^C
> $ trace-cmd report

please give me some time to set up the trace-cmd utility for capture.
i also want to run with the latest kernel and qemu-kvm once. i will
post the results soon.


the kernel version im using is 2.6.33 and qemu-kvm version is 0.12.3
and qemu version is 0.13. also im not doing any fancy relocations with
the IO APIC.
>
> --
> error compiling committee.c: too many arguments to function
-------------- next part --------------
  KVM internal error. Suberror: 1
                                                                    rax 000000000000000d rbx 000000001e2db2a6 rcx 00000000fa4bec19 rdx 0000000000000088
                          rsi 000000001f4de1ea rdi 0000000000000000 rsp 00000000000c0004 rbp 000000001f464fbb
                                                                                                             r8  0000000000000000 r9  0000000000000000 r10 0000000000000000 r11 0000000000000000
                                                                   r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000
                         rip 000000001e2f3f7b rflags 00010097
                                                             cs 0008 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type b l 0 g 1 avl 0)
   ds 0000 (00000000/ffffffff p 0 dpl 0 db 0 s 0 type 0 l 0 g 0 avl 0)
                                                                      es 0040 (00000000/ffffffff p 1 dpl 3 db 1 s 1 type 3 l 0 g 1 avl 0)
            ss 0010 (00000000/ffffffff p 1 dpl 0 db 1 s 1 type 3 l 0 g 1 avl 0)
                                                                               fs 0040 (00000000/ffffffff p 1 dpl 3 db 1 s 1 type 3 l 0 g 1 avl 0)
                     gs 0040 (00000000/ffffffff p 1 dpl 3 db 1 s 1 type 3 l 0 g 1 avl 0)
                                                                                        tr 004b (1f522206/00000067 p 1 dpl 3 db 0 s 0 type b l 0 g 0 avl 1)
                              ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
                                                                                                  gdt 1f522006/7f
                                                                                                                 idt 1f9af000/7ff
    cr0 11 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
                                         emulation failure, check dmesg for details