[Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device

[Avi Kivity]

On 03/26/2010 01:05 AM, Cam Macdonell wrote:
> > I meant a unicast doorbell: 16 bits for guest ID, 16 bits for vector number.
> >      
> Ah, yes.  Who knew "two bit registers" is an ambiguous term.  Do you
> strongly prefer the one doorbell design?
>    

Just floating out ideas.  An advantage is that it conserves register 
space; this is important if we use PIO.  For mmio this isn't so important.

--
Do not meddle in the internals of kernels, for they are subtle and quick to 
panic.