Re: [Qemu-devel] [PATCH][RFC] SVM support

[Avi Kivity <avi@qumranet.com>]

Alexander Graf wrote:
> Blue Swirl wrote:
>   
>> On 8/22/07, Alexander Graf <agraf@suse.de> wrote:
>>   
>>     
>>> - All interceptions (well, maybe I did oversee one or two)
>>>     
>>>       
>> Nice work! For better performance, you should do the op.c checks
>> statically at translation time (if possible).
>>
>>
>>   
>>     
> Thanks. I thought about that first as well, but can't. The information
> if an intercept should occur is defined in the VMCB, which is passed as
> argument on VMRUN (so whenever one enters the VM). This means that the
> very same TB can be executed with completely different intercepts, which
> means I have to fall back to runtime detection in op.c.
>   

You can have the intercept vector be a part of the TB lookup key.  So, 
if the same code is executed natively, or with different intercept 
vectors, it gets a different TB.  Qemu already does this for a number of 
things like cpu operating mode,  cs base, etc.

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