Chuck Cranor designed and implemented UVM, Matthew Green handled integration issues and wrote the swap subsystem, Chuck Silvers wrote the anonymous memory object pager (which added support for shared memory), and various other developers have converted the appropriate ports across. Andrew Brown modified UVM to be able to do top down memory management.

Will

Sent from my iPhone

On Sep 2, 2018, at 9:55 AM, Warner Losh <imp@bsdimp.com> wrote:

On Sat, Sep 1, 2018, 11:19 PM Kevin Bowling <kevin.bowling@kev009.com> wrote:
Seems like Chuck Cranor is at CMU http://chuck.cranor.org/. Chuck
Silvers is with you?

Why I'm embarrassed to admit you are right. Chuck Silvers also did some VM work, but not uvm.

Warner

On Sat, Sep 1, 2018 at 1:25 PM, Warner Losh <imp@bsdimp.com> wrote:
>
>
> On Sat, Sep 1, 2018, 1:42 PM ron minnich <rminnich@gmail.com> wrote:
>>
>> I was his advisor on that thesis so I got to watch it roll out as it
>> happened.
>>
>> uvm replaced the machvm in netbsd.
>>
>> For a time, Chuck set it up to run in parallel with the existing VM. You
>> could start a process and pick which vm it used. For a while, it defaulted
>> to the existing one. Then, at some point, it defaulted to uvm. Then, at some
>> point, the old one was removed.
>>
>> more here:
>>
>> http://www.netbsd.org/docs/kernel/uvm.html
>>
>> via search terms
>> uvm replaces machvm netbsd
>>
>> chuck was a long time contributor to netbsd IIRC, but last time we talked,
>> he was using Linux.
>
>
> These days I know he's hacking on FreeBSD's storage stack with me at work
> :). I think he's still a netbsd contributor. I see his name in the commit
> log often..
>
> Warner