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Re: port-atari/39965: "lock error" panic on install with Atari TT030

The following reply was made to PR port-atari/39965; it has been noted by GNATS.

From: David Holland <>
To: David Ross <>
Cc: David Holland <>,,,,
Subject: Re: port-atari/39965: "lock error" panic on install with Atari
Date: Wed, 3 Dec 2008 08:17:28 +0000

 On Sun, Nov 30, 2008 at 09:12:13PM -0800, David Ross wrote:
 > c)  Same as b) but with BOOTX kernel.  No networking set up.
 > Result: mostly the same as b)...  Different panic but consistent with the 
 > "lock error" panic in terms of when it occurred.
 > Screenshots:
 Ok, I think I've found the problem.
 biodone() relies on cpu_intr_p() to determine whether to shunt to a
 softint or plow straight ahead.
 The atari cpu_intr_p() tests the "idepth" variable managed by
 intr_dispatch() in atari/atari/intr.c. However, several of the
 interrupts, including the 5380 one, are hardwired and don't go
 anywhere near intr_dispatch().
 One then ends up in biodone2() in an interrupt handler, which is not
 supposed to happen, and everything goes downhill from there.
 David A. Holland

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