The following reply was made to PR kern/35042; it has been noted by GNATS.

From: yamt@mwd.biglobe.ne.jp (YAMAMOTO Takashi)
To: thorpej@shagadelic.org
Cc: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/35042: panic in vmem system (missing splfoo?) 
Date: Mon, 13 Nov 2006 07:30:40 +0900 (JST)

 > On Nov 12, 2006, at 10:40 AM, Manuel.Bouyer@lip6.fr wrote:
 > 
 > >> 	My Xen3 dom0 paniced twice today; each time in vmem(9). Looking at
 > > 	backtrace I suspect a missing splfoo() somewhere: we get an interrupt
 > > 	which ends up calling vmem_alloc() while we are in vmem_free().
 > > 	Another Xen3 user reported a similar panic on port-xen:
 > > 	http://mail-index.netbsd.org/port-xen/2006/11/08/0004.html
 > 
 > I didn't think vmem was allowed in interrupt contexts...
 > 
 > -- thorpej
 
 why not?
 
 YAMAMOTO Takashi