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SubjectRe: Userspace RCU 0.2.3
On Wed, Oct 14, 2009 at 10:39:25PM -0400, Mathieu Desnoyers wrote:
> * Paul E. McKenney (paulmck@linux.vnet.ibm.com) wrote:
> > On Wed, Oct 14, 2009 at 06:36:57PM -0400, Mathieu Desnoyers wrote:
> > > Hi,
> > >
> > > I just released lib urcu 0.2.3, which is now using autotools. I also
> > > integrated automatic architecture detection for old 386 which lack
> > > cmpxchg (using a fall-back if necessary). I also use a lock; addl
> > > instead of mfence on x86-32 to support a larger variety of older Intel
> > > CPUs.
> >
> > !!!
> >
> > Is there anyone on these lists other than me who has actually used an
> > SMP 80386-based system?
>
> SMP 386, ugh, no. But UP 386 yes (at least me). :)
>
> It will become important as the library gets integrated in
> distributions.

Even Debian has given up on real 386 systems at this point, primarily
because system libraries like glibc have; 486 and better represents the
bare minimum required at this point. I don't know of any distributions
supporting real 386 systems at this point, and doing so would represent
a major undertaking.

- Josh Triplett


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