20 Nov
2017
20 Nov
'17
8:27 p.m.
Paul Winalski <paul.winalski(a)gmail.com> wrote:
On 11/20/17, Noel Chiappa
<jnc(a)mercury.lcs.mit.edu> wrote:
The "simpler hardware handling" is a big inducement to building
on top of VM. Or at least starting out that way.
Even though AIX/370 was aimed at the educational market, my impression
is that it was still pretty expensive. When I worked at the Emory U
computing center (mid 80s) I heard about it, but management wasn't
interested in trying to get it for their S/390.
I'm pretty sure I remember hearing at some point, I don't remember when,
that AIX/370 could run either under VM or on bare iron.
Any idea what Linux/370 does? I think it runs on bare iron.
Arnold
Maybe this is my lack of knowledge of VM showing, but how did having VM
help
you over running on the bare hardware?
It would mean that you wouldn't have to implement machine check
support and other hardware error handling. The VM hypervisor would do
that for you. It would also let you run multiple versions of UNIX
simultaneously. Very convenient if you're doing kernel or driver
development.