Re: [RFT] kvm with Windows optimization

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

Anthony Liguori wrote:
> Avi Kivity wrote:
>> Anthony Liguori wrote:
>>>>
>>>> Good movement!
>>>>
>>>> But, Vista won't work with patching. The memory guard in vista will 
>>>> make the system refuse to service. Maybe we need a option
>>>> to check if it is vista.
>>>>       
>>>
>>> Are you sure that Vista isn't just verifying memory during 
>>> startup/driver load?  Seems odd to periodically scan memory.
>>>
>>> In the recently released Windows Hypervisor specification, in 
>>> section 13.2.2 (Local APIC Memory-mapped Accesses), it's dictated 
>>> that the APIC can only be accessed through 6 instructions.  They are 
>>> all >= 5 byte instructions.  When I first saw that, I figured they 
>>> were also patching.
>>>   
>>
>> Six?  My hack patches five.  Which one did I miss?
>
> FF /6  PUSH m32
>

Thanks.  That's easy to add.

> Also note, that it says that all addresses are required to be 4-byte 
> aligned.

Which addresses?  The tpr address is obviously 4 byte aligned.

The instruction pointer?!

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


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