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Date: Wed, 29 Oct 2008 09:23:53 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] Re: [PATCH 3/3] Add KVM support to QEMU
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To: qemu-devel@nongnu.org
Cc: Glauber Costa <glommer@redhat.com>, hollis@alumni.cmu.edu, Gerd Hoffmann <kraxel@redhat.com>, kvm-devel <kvm@vger.kernel.org>

Fabrice Bellard wrote:
> Avi Kivity wrote:
>   
>> Hollis Blanchard wrote:
>>     
>>>
>>> Out of curiosity, where are those places?
>>>   
>>>       
>> local apic -- needs to access interrupt disable flag
>> acpi sleep -- halts the current processor, so tied to cpustate
>> vmport -- bad ABI requires access to registers
>>     
>
> These accesses are the exception and should be done with specific CPU
> methods. IMHO, direct access to the CPU state should otherwise never be
> done from devices.
>   

Yes, this is what I'm working on now.

There are also non-devices that access CPUState but they are also 
special cases (gdbstub, monitor, save/restore).

Regards,

Anthony Liguori

> Regards,
>
> Fabrice.
>
>
>
>