The following reply was made to PR kern/140313; it has been noted by GNATS.

From: dfil...@freebsd.org (dfilter service)
To: bug-follo...@freebsd.org
Cc:  
Subject: Re: kern/140313: commit references a PR
Date: Thu,  6 Jan 2011 22:52:59 +0000 (UTC)

 Author: cperciva
 Date: Thu Jan  6 22:52:52 2011
 New Revision: 217080
 URL: http://svn.freebsd.org/changeset/base/217080
 
 Log:
   MFS r217051: Fix panic when mlock(2) is used on i386/XEN.
   
   PR:          kern/140313
   Approved by: re (rwatson)
 
 Modified:
   releng/8.2/sys/i386/xen/pmap.c
 Directory Properties:
   releng/8.2/sys/   (props changed)
   releng/8.2/sys/amd64/include/xen/   (props changed)
   releng/8.2/sys/cddl/contrib/opensolaris/   (props changed)
   releng/8.2/sys/contrib/dev/acpica/   (props changed)
   releng/8.2/sys/contrib/pf/   (props changed)
 
 Modified: releng/8.2/sys/i386/xen/pmap.c
 ==============================================================================
 --- releng/8.2/sys/i386/xen/pmap.c     Thu Jan  6 22:26:00 2011        
(r217079)
 +++ releng/8.2/sys/i386/xen/pmap.c     Thu Jan  6 22:52:52 2011        
(r217080)
 @@ -1070,7 +1070,9 @@ pmap_pte_release(pt_entry_t *pte)
        if ((pt_entry_t *)((vm_offset_t)pte & ~PAGE_MASK) == PADDR2) {
                CTR1(KTR_PMAP, "pmap_pte_release: pte=0x%jx",
                    *PMAP2);
 +              vm_page_lock_queues();
                PT_SET_VA(PMAP2, 0, TRUE);
 +              vm_page_unlock_queues();
                mtx_unlock(&PMAP2mutex);
        }
  }
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