Date: Sun, 19 Jan 1997 02:28:37 -0700 From: Steve Passe <smp@csn.net> To: Kenneth Merry <ken@housing1.stucen.gatech.edu> Cc: smp@freebsd.org Subject: Re: success!! Message-ID: <199701190928.CAA02329@clem.systemsix.com> In-Reply-To: Your message of "Sun, 19 Jan 1997 04:04:10 EST." <199701190904.EAA20041@housing1.stucen.gatech.edu>
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Hi,
> Well, I'm writing this from my machine, running X, with all of the
>cards installed an autoconfigured by the BIOS, with an APIC_IO kernel,
>using version 1.4 of the MP spec.
this is great news!!!
---
> Also, I ran mptable tonight, with all the
>cards installed, and noticed that NINTR=15 had changed to NINTR=17.
> ...
> I installed an additional ethernet card last
>night, and it wasn't working properly with the SMP kernels. That was most
>likely because of the number of interrutps.
if there are too few INTR slots compiled into the kernel it SHOULD panic
during the boot:
i386/i386/mp_machdep.c:
intEntry( IntEntry entry, int* intr )
{
int x;
if ( (x = (*intr)++) == NINTR )
panic( "too many INTs, increase 'NINTR'\n" );
...
}
so when you "hung", I wonder if it was just a panic() call that didn't print
properly? I thought I was seeing this sort of behaviour in the past, and
coded all my panic calls to look like:
printf( "message\n" );
panic( "\n" );
a few cleanups ago I removed all that stuff because it looked so ugly and
unnecessary. Why don't you try decrementing NINTR by 1 or 2 and rerunnning
config/make and see if it panic()s or if it "hangs".
I may have gotten "too clever" by counting INT sources with mptable. If
NINTR is undefined the kernel source defaults to 24, which works fine with
all IO APICs, just wastes a little space.
--
Steve Passe | powered by
smp@csn.net | FreeBSD
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