Re: kvm guest for 486 sx

[Jerry Geis <geisj@pagestation.com>]

Avi Kivity wrote:
> On 07/07/2009 03:06 PM, Jerry Geis wrote:
>>> Try -cpu 486,-fpu.
>>>
>>
>> Avi,
>>
>> Running this command:
>> qemu-system-x86_64 -net nic,model=rtl8139 -net user -hda $1 -no-acpi 
>> -usb -cpu 486,-fpu &
>>
>> I get a seg fault:
>> qemu-system-x86[15419]: segfault at c ip 0000000000458b95 sp 
>> 0000000041d9df90 error 4 in qemu-system-x86_64[400000+208000]
>>
>>
>> I am running kvm-87 centos 5.3 x86_64.
>
> Add -no-kvm-irqchip.  A 486 doesn't have a local APIC, which the code 
> expects.
>
Running with this line:
qemu-system-x86_64 -net nic,model=rtl8139 -net user -hda $1 -no-acpi 
-usb -cpu 486,-fpu -no-kvm-irqchip &



My /proc/cpuinfo shows the follow:
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 4
model           : 0
model name      : 04/00
stepping        : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : no
cpuid level     : 0
wp              : yes
flags           :
bogomips        : 2965.50
clflush size    : 32
power management:


Notice FPU indicates yes and I requested -fpu on the command line.
also is this a 486 as it says AMD?

Thanks,

Jerry