FreeBSD on Xserve ?

[David Leimbach]

On Sep 14, 2004, at 5:21 AM, jade at oxymail.org wrote:

> Selon Michael Clark <MClark at Nemschoff.com>:
>
>
> Well if the G5 doesn't work on freebie, somthing's not logic : Os X 
> claims to be
> freebsd based, so how come there's no return from Apple on how to make 
> a G5 work
> on a BSD system ?
> I don't understand...

Mac OS X is really not hardly anything at all like FreeBSD.  The Apple 
marketing
is talking about "the experience" or something and not the technical 
issues.  Unfortunately this has caused quite a bit of confusion on the 
net and some of the brightest people are being duped into thinking that 
Mac OS X is actually based on FreeBSD.

Many of the userland utilities are brought over from FreeBSD but I 
assure you the kernel, which is mostly Mach based with BSD stuff thrown 
in for filesystem and process management. [which of course needs to be 
glued to the Mach primitives to work].

All pthreads in Mac OS X end up being mach_threads at the lowest level, 
all BSD processes are mach_tasks.  This is nothing like FreeBSD.

It's also probably why you do not see tons of cross pollination of 
FreeBSD taking things from the Darwin XNU kernel.

Once you start poking around on Mac OS X's Open Source bits you can see 
it's quite different.

Dave

>
> Jade
>
>
>
>
>> Is PPC support far enough along that it could be used functionally?
>> Last I read the website There was not much working.  I have been
>> holding off installing my powerbook =)
>>
>>
>>> -----Original Message-----
>>> From: David Leimbach [mailto:leimy2k at mac.com]
>>> Sent: Sunday, September 12, 2004 10:05 AM
>>> To: jade at oxymail.org
>>> Cc: freebsd-ppc at freebsd.org
>>> Subject: Re: FreeBSD on Xserve ?
>>>
>>>
>>> I don't think we have G5 support yet.  G5's are significantly
>>> different
>>> from G4s in a few ways that really matter to operating systems.
>>> Missing BAT registers and other "fun stuff" like fan-drivers
>>> have meant
>>> that even platforms that support 64bit PPC don't necessarily
>>> support G5
>>> [like the L4 microkernels I've been playing with]
>>>
>>> Dave
>>> On Sep 12, 2004, at 2:30 AM, jade at oxymail.org wrote:
>>>
>>>> Hello,
>>>>
>>>> I'm planning on buying an Apple Xserve G5 bi-processor. I
>>> know mac os
>>>> X (server)
>>>> is running on it and that's a modified version of freebsd.
>>>> So here are my questions :
>>>>
>>>> - I've been using freebsd for a while now and if I buy the
>>> Xserve I'd
>>>> very much
>>>> like to replace mac os X by a freebsd 5.2 / 5.3 if this is
>>> possible. My
>>>> motivations are that I want to make intensive use of Jails and
>>>> Mandatory Access
>>>> Control (MAC). I'd also like to recompile the whole thing
>>> with stack
>>>> protection
>>>> (if possible).
>>>>
>>>> Yet I have no idea if Mac os X can run jails, and MAC
>>> (anyone an idea
>>>> here ?),
>>>> but if not, I'd switch to Freebie.
>>>>
>>>> So in general :
>>>> - has anyone experienced the change
>>>> - would it be difficult to replace OS X by FreeBSD ?
>>>> - would it be possible to run these options (Jails,MAC,stack
>>>> protection) on this
>>>> hardware ?
>>>>
>>>> Thanks for the hints, because I'm a little lost.
>>>>
>>>> By,
>>>> Jade.
>>>>
>>>>
>>>>
>>>>
>>>>
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>>
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