new interrupt code: panic when going multiuser
bde at zeta.org.au
Tue Nov 4 11:13:51 PST 2003
> > The following is without the local changes:
> > - cyintr(int unit) panics becauase it is passed a pointer to somewhere.
> > I think all compat_isa devices are broken for unit 0 because unit 0
> > is represented by a null pointer.
> Ah, ok. Yes, this is a semantic change. To try and support clock interrupts,
> a fast handler that passes a NULL argument will get a pointer to the intrframe
> as its argument. I got the idea via sparc64 from jake at . Perhaps something
> can be faked up in the compat_isa shims to fix this.
Clock interrupt handlers have always been a nasty special case.
> Please try http://www.FreeBSD.org/~jhb/patches/isa_compat.patch
Will try later today. It should work, but adds yet more overhead.
> > - on a BP6, UP kernels without apic work except for cyintr(), but SMP
> > kernels have problems with missing interrupts for ata devices and hang
> > at boot time.
> Is this related to the ata-lowlevel commit you mentioned above?
No. It looks like the interrupt is really going missing for some
reason. This is without any acpica.
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