[Xen-bugs] [Bug 1582] Xen Live migration failed when domu has more than 1 VCPUs

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1582


irwanhadi@xxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Platform|Other                       |x86-64




------- Comment #2 from irwanhadi@xxxxxxxxx  2010-02-10 22:41 -------
A couple more information, should this help....

=========================================================

crash> dis -lr ffffffff80251680
dis: line numbers are not available
0xffffffff8025166e <find_first_bit>:    add    $0x3f,%rsi
0xffffffff80251672 <find_first_bit+4>:  xor    %eax,%eax
0xffffffff80251674 <find_first_bit+6>:  mov    %rsi,%rcx
0xffffffff80251677 <find_first_bit+9>:  shr    $0x6,%rcx
0xffffffff8025167b <find_first_bit+13>: je     0xffffffff80251697
<find_first_bit+41>
0xffffffff8025167d <find_first_bit+15>: mov    %rdi,%rdx
0xffffffff80251680 <find_first_bit+18>: repz scas %es:(%rdi),%rax
crash>
crash>


crash> dis -lr 0xffffffff80251697
dis: line numbers are not available
0xffffffff8025166e <find_first_bit>:    add    $0x3f,%rsi
0xffffffff80251672 <find_first_bit+4>:  xor    %eax,%eax
0xffffffff80251674 <find_first_bit+6>:  mov    %rsi,%rcx
0xffffffff80251677 <find_first_bit+9>:  shr    $0x6,%rcx
0xffffffff8025167b <find_first_bit+13>: je     0xffffffff80251697
<find_first_bit+41>
0xffffffff8025167d <find_first_bit+15>: mov    %rdi,%rdx
0xffffffff80251680 <find_first_bit+18>: repz scas %es:(%rdi),%rax
0xffffffff80251683 <find_first_bit+21>: je     0xffffffff8025168d
<find_first_bit+31>
0xffffffff80251685 <find_first_bit+23>: sub    $0x8,%rdi
0xffffffff80251689 <find_first_bit+27>: bsf    (%rdi),%rax
0xffffffff8025168d <find_first_bit+31>: sub    %rdx,%rdi
0xffffffff80251690 <find_first_bit+34>: shl    $0x3,%rdi
0xffffffff80251694 <find_first_bit+38>: add    %rdi,%rax
0xffffffff80251697 <find_first_bit+41>: retq
crash>
=========================================================


ps output:
=========================================================
   3792      7   3  ffff8800f948e100  IN   0.0       0      0  [aio/3]
   3793      7   3  ffff8800f95a70c0  IN   0.0       0      0  [cqueue/3]
   3794      7   3  ffff8800f95a7820  IN   0.0       0      0  [kblockd/3]
   3795      7   3  ffff8800f9e02080  IN   0.0       0      0  [events/3]
   3804      1   0  ffff8800f9d180c0  IN   0.1  209344   3240  nscd
   3805      1   0  ffff8800f94a7820  IN   0.1  209344   3240  nscd
>  3806      7   0  ffff8800f948e860  RU   0.0       0      0  [suspend]
   3807      7   0  ffff8800f94a57e0  IN   0.0       0      0  [kstopmachine]
   3808   3807   0  ffff8800f9d19860  DE   0.0       0      0  kstopmachine
   3809   3807   2  ffff8800f9df87e0  DE   0.0       0      0  kstopmachine
   3810   3807   3  ffff8800f94bb040  DE   0.0       0      0  kstopmachine
=========================================================





=========================================================
crash> ps -p 3806
PID: 0      TASK: ffffffff804eeb00  CPU: 0   COMMAND: "swapper"
 PID: 1      TASK: ffff880000d337a0  CPU: 0   COMMAND: "init"
  PID: 7      TASK: ffff880000e89040  CPU: 0   COMMAND: "kthread"
   PID: 3806   TASK: ffff8800f948e860  CPU: 0   COMMAND: "suspend"

crash>




crash> ps -p kstopmachine
PID: 0      TASK: ffffffff804eeb00  CPU: 0   COMMAND: "swapper"
 PID: 1      TASK: ffff880000d337a0  CPU: 0   COMMAND: "init"
  PID: 7      TASK: ffff880000e89040  CPU: 0   COMMAND: "kthread"
   PID: 3807   TASK: ffff8800f94a57e0  CPU: 0   COMMAND: "kstopmachine"

PID: 0      TASK: ffffffff804eeb00  CPU: 0   COMMAND: "swapper"
 PID: 1      TASK: ffff880000d337a0  CPU: 0   COMMAND: "init"
  PID: 7      TASK: ffff880000e89040  CPU: 0   COMMAND: "kthread"
   PID: 3807   TASK: ffff8800f94a57e0  CPU: 0   COMMAND: "kstopmachine"
    PID: 3808   TASK: ffff8800f9d19860  CPU: 0   COMMAND: "kstopmachine"

PID: 0      TASK: ffffffff804eeb00  CPU: 0   COMMAND: "swapper"
 PID: 1      TASK: ffff880000d337a0  CPU: 0   COMMAND: "init"
  PID: 7      TASK: ffff880000e89040  CPU: 0   COMMAND: "kthread"
   PID: 3807   TASK: ffff8800f94a57e0  CPU: 0   COMMAND: "kstopmachine"
    PID: 3809   TASK: ffff8800f9df87e0  CPU: 2   COMMAND: "kstopmachine"

PID: 0      TASK: ffffffff804eeb00  CPU: 0   COMMAND: "swapper"
 PID: 1      TASK: ffff880000d337a0  CPU: 0   COMMAND: "init"
  PID: 7      TASK: ffff880000e89040  CPU: 0   COMMAND: "kthread"
   PID: 3807   TASK: ffff8800f94a57e0  CPU: 0   COMMAND: "kstopmachine"
    PID: 3810   TASK: ffff8800f94bb040  CPU: 3   COMMAND: "kstopmachine"

crash>

=========================================================


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