> On Thu, Dec 19, 2002 at 06:04:55PM -0800, James Cleverdon wrote:
> >>> A generic patch should also support Unisys' new box, the ES7000 or
> >>> some such.
>
> On Fri, Dec 20, 2002 at 08:00:50AM +0000, Christoph Hellwig wrote:
> >> That box needs more changes than just the apic setup. Unfortunately
> >> unisys thinks they shouldn't send their patches to lkml, but when you
see
> >> them e.g. in the suse tree it's a bit understandable that they don't
want
> >> anyone to really see their mess :)
No need to sugar-coat anything :-)
Natalie is the engineer who added support for the ES7000 to Linux.
Fortunately she is in the cube next to me.
She has sent the patches to SuSe/United Linux, and is in the final process
of testing them on 2.5.5x before submitting them to LKML for comment.
> >> And btw, the box isn't that new, but three years ago or so when they
first
> >> showed it on cebit they even refused to talk about linux due to their
> >> restrictive agreements with Microsoft..
>
> On Fri, Dec 20, 2002 at 03:24:01AM -0800, William Lee Irwin III wrote:
> > Kevin, you're the only lkml-posting contact point I know of within
Unisys.
> > Is there any chance you could flag down some of the ia32 crew there for
> > some commentary on this stuff? (or do so yourself if you're in it)
I mostly work on our 16-32p IA64 machines. Natalie or someone else will
have to comment on the clustered-apic code.
I do know that a lot of the code for the ES7000 is optional, and only
required to support value-added management functionality, which is
especially useful if you are running more than one OS instance on the
machine (it supports 8 fully-independent partitions).
Also, as a clarification, our 32-processor systems are NOT NUMA: there
is a full non-blocking crossbar to memory. So clustered APIC support
should not be dependant on NUMA.
Kevin
> Natalie is the engineer who added support for the ES7000 to Linux.
> Fortunately she is in the cube next to me.
>
> She has sent the patches to SuSe/United Linux, and is in the final process
> of testing them on 2.5.5x before submitting them to LKML for comment.
Are they under subarch or somehow abstracted this time, or are there
going to be 10,000 ifdef's again? If the latter, I can predict what
the first set of review comments you get are going to be ;-)
M.
On Fri, Dec 20, 2002 at 09:46:19AM -0600, Van Maren, Kevin wrote:
> I mostly work on our 16-32p IA64 machines. Natalie or someone else will
> have to comment on the clustered-apic code.
Okay, that's not too big a deal. I didn't expect you'd field it directly.
On Fri, Dec 20, 2002 at 09:46:19AM -0600, Van Maren, Kevin wrote:
> Also, as a clarification, our 32-processor systems are NOT NUMA: there
> is a full non-blocking crossbar to memory. So clustered APIC support
> should not be dependant on NUMA.
That one's easy to fix (and apparently for you to spot despite not
actually working on the things).
Thanks,
Bill