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Re: port-xen/45975

The following reply was made to PR port-xen/45975; it has been noted by GNATS.

From: "Aaron J. Grier" <>
Subject: Re: port-xen/45975
Date: Wed, 4 Jul 2012 16:12:23 -0700

 was this ever pulled up to NetBSD-6?  I'm seeing this with an amd64 domU
 on my xen 4.1.2 system (with NetBSD-6 as dom0) during a -j2.
 for comparison, an i386 domU runs to completion.
 * dom0
 NetBSD 6.0_BETA2 NetBSD 6.0_BETA2 (XEN3_DOM0) #2: 
Mon Jun 11 16:27:07 PDT 2012
 * domU
 NetBSD 6.0_BETA2 NetBSD 6.0_BETA2 (XEN3_DOMU) 
#2: Mon Jun 11 16:30:47 PDT 2012
 * the domU panic
 xpq_flush_queue: 1 entries (0 successful) on cpu0 (0)
 cpu0 (0):
   0x0000000000000000: 0x0000000000000000
  kpm_pdir[254]: 0x189c5f027
 cpu1 (1):
  kpm_pdir[254]: 0x199dba027
 panic: HYPERVISOR_mmu_update failed, ret: -22
 cpu0: Begin traceback...
 printf_nolog() at netbsd:printf_nolog
 xpq_queue_machphys_update() at netbsd:xpq_queue_machphys_update
 pmap_free_ptp() at netbsd:pmap_free_ptp+0xef
 pmap_remove() at netbsd:pmap_remove+0x25b
 uvm_unmap_remove() at netbsd:uvm_unmap_remove+0x256
 uvm_unmap1() at netbsd:uvm_unmap1+0x35
 uvmspace_exec() at netbsd:uvmspace_exec+0xb5
 execve_runproc() at netbsd:execve_runproc+0x51c
 execve1() at netbsd:execve1+0x33
 syscall() at netbsd:syscall+0xc4
 cpu0: End traceback...
 dump to dev 142,1 not possible
 dom0 xl dmesg:
 (XEN) domain.c:652:d30 Attempt to change CR4 flags 00000660 -> 00000620
 (XEN) mm.c:658:d30 Could not get page ref for pfn 0
 (XEN) mm.c:3459:d30 Could not get page for normal update
   Aaron J. Grier | "Not your ordinary poofy goof." |

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