On Wednesday, August 19, 2009 4:09 PM Avi Kivity wrote: > On 08/19/2009 05:14 AM, Xu, Jiajun wrote: >> I tried this with latest commit, sometimes linux guest can > do migration with more than 4G memory. >> But sometimes I found guest will hang after migration and on > host console it will print "Unknown savevm section type 40, > load of migration failed". >> >> Did you meet such issue? I met such error with both linux and >> windows sometimes. >> > > I haven't seen it. How many migrations does it take to reproduce? I found the migration failure is caused by a configuration mistake on our testing machine. Now 64-bit migration works well. But I found on PAE host, migration will cause host kernel call trace. Pid: 12053, comm: qemu-system-x86 Tainted: G D (2.6.31-rc2 #1) EIP: 0060:[<c043e023>] EFLAGS: 00210202 CPU: 0 EIP is at lock_hrtimer_base+0x11/0x33 EAX: f5d1541c EBX: 00000010 ECX: 000004a9 EDX: f5c1bc7c ESI: f5d1541c EDI: f5c1bc7c EBP: f5c1bc74 ESP: f5c1bc68 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process qemu-system-x86 (pid: 12053, ti=f5c1b000 task=f61cb410 task.ti=f5c1b000) Stack: f5d1541c ffffffff 000004a9 f5c1bc8c c043e097 f9b7f7cb f5d1541c 00000000 <0> 000004a9 f5c1bc98 c043e0f0 f5d153d0 f5c1bcb0 f9b9b4df 00000000 bfd8a102 <0> f3c1e000 f5d15440 f5c1bcc0 f9b9b56d bfd8a10c f3c1e000 f5c1bda0 f9b8c26b Call Trace: [<c043e097>] ? hrtimer_try_to_cancel+0x16/0x62 [<f9b7f7cb>] ? kvm_flush_remote_tlbs+0xd/0x1a [kvm] [<c043e0f0>] ? hrtimer_cancel+0xd/0x18 [<f9b9b4df>] ? pit_load_count+0x98/0x9e [kvm] [<f9b9b56d>] ? kvm_pit_load_count+0x21/0x35 [kvm] [<f9b8c26b>] ? kvm_arch_vm_ioctl+0x91e/0x9f5 [kvm] [<f9b7f3b4>] ? kvm_set_memory_region+0x2f/0x37 [kvm] [<f9b809c7>] ? kvm_vm_ioctl+0xafb/0xb45 [kvm] [<c043ddf8>] ? enqueue_hrtimer+0x5d/0x68 [<c043e258>] ? __hrtimer_start_range_ns+0x15d/0x168 [<c043e272>] ? hrtimer_start+0xf/0x11 [<f9cd51cd>] ? vmx_vcpu_put+0x8/0xa [kvm_intel] [<f9b83e8b>] ? kvm_arch_vcpu_put+0x16/0x19 [kvm] [<f9b8b943>] ? kvm_arch_vcpu_ioctl+0x7d5/0x7df [kvm] [<c041f1e5>] ? kmap_atomic+0x14/0x16 [<c046ec2f>] ? get_page_from_freelist+0x27c/0x2d2 [<c046ed72>] ? __alloc_pages_nodemask+0xd7/0x402 [<c04714a6>] ? lru_cache_add_lru+0x22/0x24 [<f9b7f6b5>] ? kvm_dev_ioctl+0x22d/0x250 [kvm] [<f9b7fecc>] ? kvm_vm_ioctl+0x0/0xb45 [kvm] [<c049a9ab>] ? vfs_ioctl+0x22/0x67 [<c049af1d>] ? do_vfs_ioctl+0x46c/0x4b7 [<c05fb0fb>] ? sys_recv+0x18/0x1a [<c0446bef>] ? sys_futex+0xed/0x103 [<c049afa8>] ? sys_ioctl+0x40/0x5a [<c04028a4>] ? sysenter_do_call+0x12/0x22 Code: c0 ff 45 e4 83 45 dc 24 83 7d e4 02 0f 85 cf fe ff ff 8d 65 f4 5b 5e 5f 5d c3 55 89 e5 57 89 d7 56 89 c6 53 8b 5e 20 85 db 74 17 <8b> 03 e8 0e dd 23 00 89 07 3b 5e 20 74 0d 89 c2 8b 03 e8 8a dd EIP: [<c043e023>] lock_hrtimer_base+0x11/0x33 SS:ESP 0068:f5c1bc68 CR2: 0000000000000010 ---[ end trace f747f57e7d1b76c8 ]--- Best Regards Jiajun-- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
