libpciaccess on GNU/Hurd

[Samuel Thibault]

Adam Jackson, le jeu. 08 nov. 2018 15:19:41 -0500, a ecrit:
> > > If you try to implement this with a userspace arbiter then
> > > all you need to do to break it is run an old version of libpciaccess.
> > 
> > Sure. Except if ioperm is allowed only for the pci arbiter.
> 
> ... but that's all you need. Call ioperm, if it succeeds you must be
> the arbiter, so you install the x86 backend.

Mmm, we could do that in the kernel, yes: only allow one process to
access the PCI config ports.

Samuel