The following reply was made to PR port-sparc64/29473; it has been noted by GNATS.

From: Steve Woodford <scw@netbsd.org>
To: gnats-bugs@netbsd.org
Cc: port-sparc64-maintainer@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: port-sparc64/29473: nfs + bus_dmamap_load_mbuf often results in a hang
Date: Fri, 4 Mar 2005 10:58:31 +0000

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 On Thursday 03 March 2005 18:38, john heasley wrote:
 
 >  first, the server does not respond to ping and getty does not respond
 > on the console.  It does appear as if, from _load_mbuf, it enters
 > pmap_extract, though it does not show-up in the trace.
 
 Can you try the attached patch to sparc64/machdep.c please?
 
 Cheers, Steve
 
 
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 Index: machdep.c
 ===================================================================
 RCS file: /cvsroot/src/sys/arch/sparc64/sparc64/machdep.c,v
 retrieving revision 1.177
 diff -u -r1.177 machdep.c
 --- machdep.c	30 Jan 2005 16:56:26 -0000	1.177
 +++ machdep.c	4 Mar 2005 10:57:00 -0000
 @@ -1113,9 +1113,6 @@
  		vaddr_t vaddr = mtod(m, vaddr_t);
  		long buflen = (long)m->m_len;
  
 -		if (buflen == 0)
 -			continue;
 -
  		len += buflen;
  		while (buflen > 0 && i < MAX_DMA_SEGS) {
  			paddr_t pa;
 
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