Re: [Qemu-devel] [PATCH] pci: add standard bridge device

[Michael S. Tsirkin]

On Sun, Sep 04, 2011 at 06:46:46PM +0300, Avi Kivity wrote:
> On 09/04/2011 06:45 PM, Michael S. Tsirkin wrote:
> >On Sun, Sep 04, 2011 at 06:37:08PM +0300, Avi Kivity wrote:
> >>  On 09/04/2011 06:24 PM, Michael S. Tsirkin wrote:
> >>  >>
> >>  >>   Of course it doesn't ignore it.  See the 440fx implementation, if
> >>  >>   you disable VGA access (via the SMRAM register), vga goes away.
> >>  >
> >>  >Yes but that's for VGA RAM, right? I'm talking about the IO addresses:
> >>  >are tons of aliases created as you suggest?
> >>
> >>  No.
> >
> >So a full 16 bit decode is done for now?
> >
> 
> Correct.

Then we probably can ignore the issue and do 16 bit decode all over
for now.

> But isn't it needed?  Otherwise why don't vga accesses
> alias with a virtio device at 0xc3c0?

It really depends on the device I think.

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