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Re: port-alpha/38335 (kernel freeze on alpha MP system)

The following reply was made to PR port-alpha/38335; it has been noted by GNATS.

From: "Michael L. Hitch" <>
To: Jarle Greipsland <>
Subject: Re: port-alpha/38335 (kernel freeze on alpha MP system)
Date: Sun, 4 Oct 2009 11:08:29 -0600 (MDT)

    I have just committed the following patch, which seems to help 
 considerably.  I've been doing sucessive builds using 2 cpus on an ES40.
 I haven't gotten any deadlocks yet, but I did just get a segment violation 
 on the grotty program on the previous build this morning.
 Index: sys/arch/alpha/alpha/pmap.c
 RCS file: /cvsroot/src/sys/arch/alpha/alpha/pmap.c,v
 retrieving revision 1.242
 diff -u -p -r1.242 pmap.c
 --- sys/arch/alpha/alpha/pmap.c 10 Sep 2009 22:27:11 -0000      1.242
 +++ sys/arch/alpha/alpha/pmap.c 4 Oct 2009 16:58:00 -0000
 @@ -962,7 +962,7 @@ pmap_bootstrap(paddr_t ptaddr, u_int max
          for (i = 0; i < ALPHA_MAXPROCS; i++) {
                  mutex_init(&pmap_tlb_shootdown_q[i].pq_lock, MUTEX_DEFAULT,
 -                   IPL_VM);
 +                   IPL_SCHED);
 Michael L. Hitch             
 Computer Consultant
 Information Technology Center
 Montana State University       Bozeman, MT     USA

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