[Ksummit-2012-discuss] [ATTEND] <ding> "Bring out your dead" <ding>...
Paul E. McKenney
paulmck at linux.vnet.ibm.com
Tue Jun 26 17:34:48 UTC 2012
On Mon, Jun 25, 2012 at 08:03:34PM -0400, Paul Gortmaker wrote:
[ . . . ]
> Linus mentioned that perhaps someday we might be able to remove EISA as
> well. It seems to make sense to me too, given that EISA (at least in
> x86) was largely confined to 486 and 586 (sub-200MHz) server machines,
> and largely all crushed out of existence by PCI around 1996. But some
> non-x86 boxes may rely on EISA -- such as some Alpha boxes, I think.
> What about Alpha? It was effectively killed 10+ years ago by Compaq.
> I suspect most of the Alpha machines still hiding in basements here and
> there are EV5/EV6 desktops with Pentium-3 class performance. Sure
> there were faster machines made in the post Compaq takeover era, but
> given that they could be in excess of $1,000,000 -- I'll guess that the
> number hiding in basements is low. Are Alpha machines being actively
> used? I don't know. Also worth investigating. Not so we can remove
> it tomorrow, but even the most ardent supporter would have to admit
> that _someday_ removal will make sense. Lets discuss the EISA
> dependency (if it exists) and set a ballpark on when that someday just
> might be. Then we can warn people well in advance.
I suggested dropping Alpha awhile back and got this URL in response:
That said, I believe that Alpha-only bugs are accumulating, as there
are situations where only Alpha needs something like rcu_dereference()
and all other architectures are happy with ACCESS_ONCE().
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