Messages in this thread | | | Date | Wed, 11 Apr 2001 02:00:58 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH] i386 rw_semaphores fix |
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On Tue, Apr 10, 2001 at 11:00:31PM +0100, Alan Cox wrote: > > I guess 386 could live with an exception handler that emulates it. > > 386 could use a simpler setup and is non SMP
The idea was to have a `generic' kernel that works on all architectures. If you drop 386 support much is better already.
> > (BTW an generic exception handler for CMPXCHG would also be very useful > > for glibc -- currently it has special checking code for 386 in its mutexes) > > The 386 are so slow that nobody would probably notice a bit more slowness > > by a few exceptions. > > Be serious. You can compile glibc without 386 support. Most vendors already > distribute 386/586 or 386/686 glibc sets.
Yes, and with CMPXCHG handler in the kernel it wouldn't be needed (the other 686 optimizations like memcpy also work on 386)
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