Date: Mon, 19 May 1997 21:12:04 -0700 From: Jason Thorpe <thorpej@nas.nasa.gov> To: Peter Wemm <peter@spinner.dialix.com> Cc: dg@root.com, Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>, freebsd-hackers@freebsd.org, freebsd-bugs@freebsd.org Subject: Re: trap type 29 on P6 Message-ID: <199705200412.VAA19394@lestat.nas.nasa.gov>
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On Tue, 20 May 1997 12:09:40 +0800
Peter Wemm <peter@spinner.DIALix.COM> wrote:
> Under FreeBSD, the IDT vector number for irq7 is 39, not 29.. The PIC's
> are programmed to use 32 through 47 (under non-SMP).
...I know :-) irq 7 is directed to another vector under NetBSD/i386, as
well...
> I think this is different to the problem that you describe. Here we're
> getting trap 29 which:
> [..]
> #define T_STKFLT 27 /* stack fault */
> #define T_MCHK 28 /* machine check trap */
> #define T_RESERVED 29 /* reserved (unknown) */
...exactly what I'm talking about... I originally thought I was seeing
a machine-check as well.
The relevant bit of locore.s from NetBSD/i386:
IDTVEC(trap0f)
/*
* The Pentium Pro local APIC may erroneously call this vector for a
* default IR7. Just ignore it.
*/
iret
Jason R. Thorpe thorpej@nas.nasa.gov
NASA Ames Research Center Home: 408.866.1912
NAS: M/S 258-6 Work: 415.604.0935
Moffett Field, CA 94035 Pager: 415.428.6939
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