Re: SIGILL in grub in guest on 4365

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Gregory Haskins wrote:
>>>> On Thu, Feb 1, 2007 at  7:46 AM, in message <45C1E116.1070802-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
>>>>         
> Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> wrote: 
>   
>> Gregory Haskins wrote:
>>
>>     
>>> 1) Is this how illegal- op would be handled, or would that stay entirely in 
>>>       
>> the domain of the guest?  
>>     
>>>   
>>>       
>> An illegal opcode in the guest is handled normally by generating #UD in 
>> the guest, without host involvement at all.
>>
>>     
>
> Ah, thank you.   Sounds like I need to do some more reading in the Intel docs ;)  Despite my failings here, I did learn a lot about KVM/QEMU in the process so it wasnt wasted effort.
>
>   

VT allows both methods.  Basically you tell it for which exceptions you 
want a vmexit.

In kvm, we only intercept page faults (for mmu virtualization), and, if 
guest debugging is enabled, breakpoint exceptions.  We let the guest 
handle the rest.

-- 
error compiling committee.c: too many arguments to function


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