[Qemu-devel] Re: [SeaBIOS] IO APIC emulation failure with qemu-kvm

[Ravi Kumar Kulkarni]

On Mon, Feb 7, 2011 at 2:19 PM, Avi Kivity <address@hidden> wrote:
> On 02/07/2011 10:33 AM, Ravi Kumar Kulkarni wrote:
>>
>> On Sun, Feb 6, 2011 at 10:50 PM, Avi Kivity<address@hidden>  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.
>>   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
>
> What's the guest code at rip 0x1e2f3f7b ?

 please find the code below.

 (qemu) xp /20iw 0x1e2f3f83

                                            0x000000001e2f3f83:  pop    %ds

                                            0x000000001e2f3f84:  jae
 0x1e2f3f66

                                            0x000000001e2f3f86:  dec    %ebp

                                            0x000000001e2f3f87:  pop    %ds

                                            0x000000001e2f3f88:  pushf

                                            0x000000001e2f3f89:  aas

                                            0x000000001e2f3f8a:  das

                                            0x000000001e2f3f8b:  push
 %ds

0x000000001e2f3f8c:  iret

                                            0x000000001e2f3f8d:  test
 $0x1e2e,%eax

                                            0x000000001e2f3f92:  add
 %al,(%eax)

0x000000001e2f3f94:  add    %al,(%eax)

                                            0x000000001e2f3f96:  add
 %al,(%eax)

                                            0x000000001e2f3f98:  or
 $0x0,%eax

                                            0x000000001e2f3f9d:  add
 %al,(%eax)

0x000000001e2f3f9f:  add    %cl,0x81e2f4c(%esi)

                                            0x000000001e2f3fa5:  add
 %al,(%eax)

                                            0x000000001e2f3fa7:  add
 %al,(%edx)

0x000000001e2f3fa9:  add    %al,(%ecx)

                                            0x000000001e2f3fab:  add
 %cl,-0x1f(%edx)
Thanks,
Ravi Kulkarni.


>
> --

>
>