Re: [Qemu-devel] [PATCH RFC] vga: flag vga ram for notifiers

[Anthony Liguori]

On 03/31/2011 02:07 PM, Michael S. Tsirkin wrote:
> > Just needs some love.
> >
> > VGA is just another device.  It happens to be that we treat VGA
> > device memory as something that behaves like ram occassionally but
> > that does not make it RAM.
> If we agree on that, will a pair of functions for this work?
> How about device_register_ram / device_unregister_ram ?

To register normal RAM or to register stuff that isn't RAM but looks and 
tastes like RAM?


> > Something like vhost doesn't need to see anything but RAM.  If we
> > have a mechanism to identify RAM as RAM, then vhost can only look at
> > RAM memory and not worry about things like VGA.
> >
> > I thought Alex had gotten a mini-version of RamAPI in but I can't
> > seem to figure out what that included.
> Me neither.
>
> >   At any rate, the point is
> > still that registering things that you want to exclude in vhost is
> > the wrong approach, you want to explicitly mark the things you want
> > to include.
> >
> > Regards,
> >
> > Anthony Liguori
> vhost just wants RAM.

Right, so mark RAM, and call it a day :-)

Regards,

Anthony Liguori