Re: [Qemu-devel] qvm86, kqemu and video speed

[Struan Bartlett <struan@praguespringpeople.org>]

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I agree with both views: Qemu should provide the Cirrus emulation option 
for those who need full emulation, and if we manage to emulate a 
"custom" driver model, that would be an option for those who need speed.

This has come up before, and it will come up again. Apparently, we don't 
know whether Diego's BochsVGA source is open. However we do know Filip 
Navarra's is (and I've posted what I have on 
http://www.praguespringpeople.org/Struan/Software/QEMU/Drivers/ for the 
interested).

Struan

Paul Brook wrote:

>On Monday 11 April 2005 16:01, James Mastros wrote:
>  
>
>>After that, I think the best thing to do is to move from emulating a
>>standard video card to defining our own that maps from the operations
>>that the OS calls its video driver on to the operations that SDL
>>implements, leaving any that do not map simply for the OS to emulate, on
>>the theory that it probably knows how to better then we do.  However,
>>this is a much larger undertaking, as it requires learning the driver
>>model of the guest OSes.
>>    
>>
>
>I agree that emulating a "custom" driver model should give better performance 
>than emulating real hardware (VMware does this). However I think you should 
>provide all the functionality you possibly can, even if the host doesn't 
>provide native acceleration for it. It's always going to be faster to do 
>something in software on the host than it is on the guest.
>
>Paul
>
>
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