On Wed, 27 Jan 1999, Stafford Goodsell wrote:
> In message <[EMAIL PROTECTED]>, Mattias Blomqvist writes:
> >Hello
> >I have once in a while for the past years looked at dosemu and i must
> >say its very nice program.
> >However, there are dos-programs out there that wants ring 0 access which
> >isnt possible. Wouldnt it be possible to allow dosemu that kind of
> >access if you are running as root and you really want to?
> >Maybe something to activate at compile time that compiles a dosemu that
> >can do it. In my opinion its the one big thing missing...
> ive been thinking about this too.
> its probably not wise or even possible to allow ring 0 access to a
> dos program, but im wondering if it can be faked. What kinds of
> instructions are executed by progs that want to run in VCPI mode?
The ring0 instructions or memory manipulation - there is no other need to
be in ring0 AFAIK. The other "problem" would be that granting DOSEMU this
access would require a kernel module/patch and would open the hole for ANY
application to gain access to ring0. (Say: Hello Virus, ByeBye system)
For those wanting to risk their sanity CPUEMU does
exist - in the development versions of DOSEMU. It does some emulation so
far, but the real expert is (currently) Alberto.
Alistair
