From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: error in xen/arch/x86/mm.c:get_page during migration Date: Thu, 21 Feb 2013 15:48:41 +0100 Message-ID: <20130221144841.GB23819@aepfle.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org While doing "while xm migrate --live domU localhost;do sleep 2;done" I see many errors from get_page: ... (XEN) HVM56 restore: TSC_ADJUST 0 (XEN) HVM56 restore: TSC_ADJUST 1 (XEN) mm.c:1982:d0 Error pfn 41a863: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) mm.c:1982:d0 Error pfn 41be1c: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) mm.c:1982:d0 Error pfn 41a862: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) mm.c:1982:d0 Error pfn 41b90f: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) mm.c:1982:d0 Error pfn 41b49a: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) mm.c:1982:d0 Error pfn 41b48d: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 (XEN) irq.c:375: Dom56 callback via changed to Direct Vector 0xf3 (XEN) HVM56 save: CPU ... The pfn number and the amount of pfn differs during iterations, but in the end only these two variants appear: # xm dmesg | grep -w mm | cut -d : -f 4- | sort | uniq -c | sort 22 rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 46 rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=0000000000000001 It does not seem to cause issues other than the log output. Does it indiciate a real bug? Olaf