On 07/20/2011 07:10 PM, Michael S. Tsirkin wrote:
>  and vga could do it if the vnc display
>  is disconnected, or if the update rate is so high it can just assume
>  all memory is dirty.

Yes, but it's not something *devices* should be doing.

No one knows about the frame buffer except the vga device.

>  >What devices seem to need, instead, is enable/disable a region
>  >through a back channel.
>
>  What do you mean?

At least for qxl, all it seems to do is enable/disable
logging when the region is enabled disabled.
I'm not sure I follow what does vmware do - something
similar only with a custom register instead of
the standard memory enable?

pv vga like vmware and qxl disables logging when the pv interface is active.

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


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