Comment 17 for bug 1410673

------- Comment From <email address hidden> 2015-07-10 16:12 EDT-------
I have installed Ubuntu 15.04 ISO as a PKVM guest on P8 Hardware.
Then upgraded the guest VM to the latest kernel and rebooted the guest VM.

root@ubuntu:~# apt-get update
root@ubuntu:~# apt-get dist-upgrade

root@ubuntu:~# uname -a
Linux ubuntu 3.19.0-23-generic #24-Ubuntu SMP Tue Jul 7 20:49:14 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux
root@ubuntu:~# cat /etc/issue
Ubuntu 15.04 \n \l

root@ubuntu:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="15.04 (Vivid Vervet)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 15.04"
VERSION_ID="15.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

The test scenario is executed again and it is successful without any issues.

root@ubuntu:~# perf trace sleep 1
0.221 ( 0.221 ms): read(fd: 5<pipe:[12702]>, buf: 0x3fffffc1caaf, count: 1 ) = 1
0.983 ( 0.157 ms): execve(filename: 0x3fffffc1c974, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
1.295 ( 0.011 ms): execve(filename: 0x3fffffc1c964, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
1.462 ( 0.011 ms): execve(filename: 0x3fffffc1c97b, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
1.629 ( 0.011 ms): execve(filename: 0x3fffffc1c97c, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
1.803 ( 0.011 ms): execve(filename: 0x3fffffc1c981, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
1.986 ( 0.011 ms): execve(filename: 0x3fffffc1c982, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
2.176 ( 0.010 ms): execve(filename: 0x3fffffc1c985, argv: 0x3fffffc1fe40, envp: 0x1002a6209f0) = -2
2.944 ( 0.114 ms): brk( ) = 0x100287c0000
3.252 ( 0.131 ms): access(filename: 0x3fffb3d3faa8 ) = -1 ENOENT No such file or directory
3.427 ( 0.010 ms): access(filename: 0x3fffb3d3ea28, mode: R ) = -1 ENOENT No such file or directory
3.732 ( 0.147 ms): open(filename: 0x3fffb3d40a30, flags: CLOEXEC ) = 3
3.892 ( 0.002 ms): fstat(fd: 3</etc/ld.so.cache>, statbuf: 0x3fffd4590320 ) = 0
4.188 ( 0.298 ms): ... [continued]: mmap()) = 0x3fffb3ce0000
4.346 ( 0.002 ms): close(fd: 3</etc/ld.so.cache> ) = 0
4.606 ( 0.009 ms): access(filename: 0x3fffb3d3faa8 ) = -1 ENOENT No such file or directory
4.774 ( 0.011 ms): open(filename: 0x3fffb3d641e8, flags: CLOEXEC ) = 3
4.971 ( 0.016 ms): read(fd: 3</lib/powerpc64le-linux-gnu/libc-2.21.so>, buf: 0x3fffd4590528, count: 832) = 832
5.148 ( 0.002 ms): fstat(fd: 3</lib/powerpc64le-linux-gnu/libc-2.21.so>, statbuf: 0x3fffd4590340) = 0
5.334 ( 0.013 ms): mmap(arg0: 0, arg1: 1925664, arg2: 5, arg3: 2050, arg4: 3, arg5: 0 ) = 0x3fffb3b00000
5.523 ( 0.013 ms): mmap(arg0: 70367465701376, arg1: 131072, arg2: 3, arg3: 2066, arg4: 3, arg5: 1769472) = 0x3fffb3cc0000
5.716 ( 0.002 ms): close(fd: 3</lib/powerpc64le-linux-gnu/libc-2.21.so> ) = 0
5.960 ( 0.141 ms): mprotect(start: 0x3fffb3cc0000, len: 65536, prot: READ ) = 0
5.994 ( 0.012 ms): mprotect(start: 0x3fffb3d50000, len: 65536, prot: READ ) = 0
6.130 ( 0.119 ms): munmap(addr: 0x3fffb3ce0000, len: 42137 ) = 0
6.376 ( 0.174 ms): brk( ) = 0x100287c0000
6.403 ( 0.009 ms): brk(brk: 0x100287f0000 ) = 0x100287f0000
6.435 ( 0.010 ms): open(filename: 0x3fffb3c9c7f8, flags: CLOEXEC ) = 3
6.452 ( 0.002 ms): fstat(fd: 3</usr/lib/locale/locale-archive>, statbuf: 0x3fffb3cd26f8 ) = 0
6.485 ( 0.011 ms): mmap(arg0: 0, arg1: 2919792, arg2: 1, arg3: 2, arg4: 3, arg5: 0 ) = 0x3fffb3830000
6.506 ( 0.002 ms): close(fd: 3</usr/lib/locale/locale-archive> ) = 0
1006.659 (1000.102 ms): nanosleep(rqtp: 0x3fffd45911a8 ) = 0
1006.718 ( 0.004 ms): close(fd: 1 ) = 0
1006.759 ( 0.003 ms): close(fd: 2 ) = 0
1006.808 ( 0.000 ms): exit_group(
root@ubuntu:~# echo $?
0