sparc64/94778: panic in intr_fast()

[Andrew Belashov]

The following reply was made to PR sparc64/94778; it has been noted by GNATS.

From: Andrew Belashov <bel at orel.ru>
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: sparc64/94778: panic in intr_fast()
Date: Fri, 31 Mar 2006 10:12:58 +0400

 With following workaround the kernel does not a panic:
 
 --- interrupt.S.diff begins here ---
 --- sys/sparc64/sparc64/interrupt.S.orig        Sat Apr 16 19:05:56 2005
 +++ sys/sparc64/sparc64/interrupt.S     Thu Mar 30 13:35:18 2006
 @@ -159,7 +159,7 @@
          ret
           restore
 
 -2:     wrpr    %g0, PSTATE_NORMAL, %pstate
 +2:     /* wrpr %g0, PSTATE_NORMAL, %pstate */
 
          ldx     [%l0 + IR_NEXT], %l1
          brnz,pt %l1, 3f
 --- interrupt.S.diff ends here ---
 
 Whether it is necessary to do interrupt handler queue operations
 (add to queue/remove from queue) as atomic?
 
 --
 Andrew Belashov