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From: Steve Passe <smp@csn.net>
To: Terry Lambert <terry@lambert.org>
cc: rv@groa.uct.ac.za, smp@freebsd.org
Subject: Re: SMP on Intel XXpress 
In-reply-to: Your message of "Thu, 05 Sep 1996 14:38:34 PDT."
             <199609052138.OAA09991@phaeton.artisoft.com> 
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Date: Thu, 05 Sep 1996 17:22:44 -0600
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Hi,

> after the "sysctl kern.smp_active=2" the 2nd CPU calls secondary_main()
> which merely prints an info message, then calls cpu_switch(), from which
> it never returns (thats a good thing, it shouldn't).  but from this point
> on we have the INT loss problem.

is anything actual using the routine in i386/isa/vector.s:

FAST_INTR(irq_num, vec_name, enable_icus)

I believe it has a bug where it fails to release the mp_lock for
hardware INTerrupts.

-
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