[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: [PATCH] xen: add gntdev
On Tue, Dec 04, 2012 at 04:26:19PM +0100, Roger Pau Monn? wrote:
> Independently of what we end up doing as default for handling raw file
> disks, could someone review this code?
> It's the first time I've done a device, so someone with more experience
> should review it.
I am not sure I entirely follow what this code's doing, but it seems to
me it may allow arbitrary physical pages to be exposed to userspace
processes in dom0 -- or in a domU, albeit only if dom0 userspace says so.
Is that a correct understanding of one of its effects? If so, there's
a problem, since not being able to do precisely that is one important
assumption of the 4.4BSD security model.
Main Index |
Thread Index |