Re: [Qemu-devel] [PATCH 0/4] net-bridge: rootless bridge support for qemu

[Jamie Lokier]

Avi Kivity wrote:
> On 11/05/2009 06:50 PM, Anthony Liguori wrote:
> >>I'm worrying that we're transforming one problem into two different 
> >>ones.  Expanding the scope of qemu, and making it more difficult to 
> >>use advanced networking functionality.
> >
> >
> >Do you object to the idea of having qemu call to a helper program 
> >directly or to the idea of having the helper program in qemu at all? 
> 
> Both, the former much less that the latter.
> 
> I dislike helper programs, I find them inefficient especially at runtime 
> as the penalties of fork() on a memory hog (esp. one that uses mmu 
> notifiers like qemu+kvm) are considerable.

Note that system() does not used fork() these days.  It should not be
affected by process size.

-- Jamie