history is hard

[Warner Losh]

On Sun, May 24, 2020 at 3:14 PM Peter Coghlan via cctalk <
cctalk at classiccmp.org> wrote:

> On Sun, 24 May 2020 at 13:20:41 -0600, Warner Losh wrote:
> > On Sun, May 24, 2020, 11:04 AM Toby Thain via cctalk <
> cctalk at classiccmp.org>
> > wrote:
> >
> >> On 2020-05-24 11:17 AM, Bill Gunshannon via cctalk wrote:
> >> > ... IBM was doing
> >> > Virtualization in the 70's.
> >>
> >> 1968 and probably before.[1]
> >>
> >> Most operating systems concepts[2] are much older than people think.
> >>
> >
> > The topic for my talk next week. Unix had virtualization in 74. The
> second
> > Unix port ran under OS/360's VM in 78.
> >
>
> What do you mean by "Unix had virtualization"?
>

I mean that 4th edition UNIX ran under a hypervisor in MERT in 74 as a
process in that real-time executive.


> Come to think of it, what do you mean by "OS/360's VM"?
>

IBM's standard VM/360. Sorry for the confusion.

That will teach me to reply on my phone...

Warner


> Regards,
> Peter Coghlan
>
> >
> > Warner
> >
> >
> > --T
> >>
> >> [1] https://en.wikipedia.org/wiki/History_of_CP/CMS
> >> [2] e.g. ref: Per Brinch Hansen, Classic Operating Systems
> >>
> >> >
> >> > bill
> >> >
> >>
> >>
>