Re: kern/56568: ipmi.c 1.7 causes large boot delays

["Manuel Bouyer via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/56568; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: Taylor R Campbell <campbell+netbsd-tech-kern%mumble.net@localhost>
Cc: Michael van Elst <mlelstv%NetBSD.org@localhost>, Hauke Fath <hf%spg.tu-darmstadt.de@localhost>,
        Edgar =?iso-8859-1?B?RnXf?= <ef%math.uni-bonn.de@localhost>,
        gnats-bugs%NetBSD.org@localhost, netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/56568: ipmi.c 1.7 causes large boot delays
Date: Tue, 3 Dec 2024 11:43:25 +0100

 On Tue, Dec 03, 2024 at 11:42:10AM +0100, Manuel Bouyer wrote:
 > On Tue, Dec 03, 2024 at 01:00:57AM +0000, Taylor R Campbell wrote:
 > > The attached patch -- compile-tested only -- tries to resolve the
 > > present conflict between long ipmi(4) initialization time and early
 > > use of wdogctl(8) at boot by:
 > > 
 > > (a) allowing boot to proceed with config_pending_decr sooner, before
 > >     device initialization has completed; and
 > > 
 > > (b) making watchdog configuration wait until initialization has
 > >     completed.
 > > 
 > > Testing welcome!
 > 
 > Looks fine on a supermicro board:
 > ...
 > [   1.0000000] ipmi0 at mainbus0
 > ...
 > [   4.8031702] root file system type: ffs
 > [   4.8231724] kern.module.path=/stand/amd64/10.0/modules
 > [   5.1331493] entropy: best effort
 > Tue Dec  3 11:39:01 MET 2024
 > rcorder: could not open /etc/rc.d/xenbackendd: No such file or directory
 > rcorder: could not open /etc/rc.d/xend: No such file or directory
 > Starting watchdog timer.
 > [  13.1031692] ipmi0: ID 32.1 IPMI 2.0 Available
 > Starting root file system check:
 > 
 > "Starting watchdog timer" did cause the 8s pause 
 
 Forgot to mention; this is patched netbsd-10 kernel, not head
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --