# Re: [Xen-devel] Re: Re: xway issues / bugs

```hi
```
i am interested in your work about "to enable migration of the guestOS using xway channel", what does it mean? does it mean that you try to enable the VM with xway channel to make live migration, or not?
```

êìì åé:
```
```Hello.
I am an one of the developers of xway.
Firstly, I'm sorry for late response.

We(xway developers) have seen a reported your xway bug. But we didn't have
enough time to reaction.
Because of the our project's schedule, Now we don't have any time to solving
this bugs.

Currently we are working to enable migration of the guestOS using xway channel.
When our job is completed, we will try to resolve it ASAP.

```
We hope you to wait then, and please notice the state of your work to me.
```

Best Regards
Chei-yol Kim

-----Original Message-----
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than "Re: Contents of Xen-devel digest..."

Today's Topics:

1. Re: xway issues / bugs (Muhammad Atif)

----------------------------------------------------------------------

Message: 1
Date: Thu, 10 Jan 2008 05:17:43 -0800 (PST)
Subject: Re: [Xen-devel] xway issues / bugs
To: Derek.Murray@xxxxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Message-ID: <71298.57795.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"

```
Thanks for the reply and pointing me forward.
```Well xm dmesg is giving me nothing related to xway, that is why i never
strace output when I try to ssh from one guest to another. The xway switch
seems to work perfectly and routes us to shared memory (grant table) mechanism.
That is where the problem starts and communication stops. I think that is due
to xway driver.

one side note: I am not jumping to conclusions, but i guess the developers of
this
project have abandoned the project. :(. I have contacted them on the
email addresses provided, but so far no response. Or it can be that they are
terribly busy bringing it upto unstable tree. :)

=========================================
execve("/usr/bin/ssh", ["ssh", "192.168.0.100"], [/* 15 vars */]) = 0
brk(0)                                  = 0x80049000
access("/etc/ld.so.nohwcap", F_OK)      = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7ef0000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10106, ...}) = 0
mmap2(NULL, 10106, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eed000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libresolv.so.2", O_RDONLY)   = 3
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=59216, ...}) = 0
mmap2(NULL, 71880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7edb000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xd) = 0xb7ee9000
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eeb000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libcrypto.so.0.9.8", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1344548, ...}) = 0
mmap2(NULL, 1360824, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d8e000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x134) = 0xb7ec3000
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ed7000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libutil.so.1", O_RDONLY)     = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=9696, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7d8d000
mmap2(NULL, 12432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d89000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7d8b000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libz.so.1", O_RDONLY)    = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=78276, ...}) = 0
mmap2(NULL, 81116, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d75000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12) = 0xb7d88000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libnsl.so.1", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=75500, ...}) = 0
mmap2(NULL, 87848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d5f000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11) = 0xb7d71000
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7d73000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libcrypt.so.1", O_RDONLY)    = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=21908, ...}) = 0
mmap2(NULL, 184636, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d31000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4) = 0xb7d36000
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7d38000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libgssapi_krb5.so.2", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=113800, ...}) = 0
mmap2(NULL, 112504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7d15000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b) = 0xb7d30000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libkrb5.so.3", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=512500, ...}) = 0
mmap2(NULL, 511268, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7c98000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7b) = 0xb7d13000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libk5crypto.so.3", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=151296, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7c97000
mmap2(NULL, 150752, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7c72000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24) = 0xb7c96000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libcom_err.so.2", O_RDONLY)  = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=5792, ...}) = 0
mmap2(NULL, 8724, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7c6f000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7c71000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/usr/lib/libkrb5support.so.0", O_RDONLY) = 3
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=14164, ...}) = 0
mmap2(NULL, 12936, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7c6b000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3) = 0xb7c6e000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1216808, ...}) = 0
mmap2(NULL, 1226148, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7b3f000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x125) = 0xb7c65000
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7c68000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libdl.so.2", O_RDONLY)       = 3
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9684, ...}) = 0
mmap2(NULL, 12412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7b3b000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7b3d000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7b3a000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7b39000
useable:1}) = 0
munmap(0xb7eed000, 10106)               = 0
open("/dev/null", O_RDWR|O_LARGEFILE)   = 3
close(3)                                = 0
brk(0)                                  = 0x80049000
brk(0x8006a000)                         = 0x8006a000
getuid32()                              = 0
geteuid32()                             = 0
setresuid32(-1, 0, -1)                  = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 3
fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT
(No such file or directory)
close(3)                                = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 3
fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT
(No such file or directory)
close(3)                                = 0
open("/etc/nsswitch.conf", O_RDONLY)    = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=475, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7eef000
read(3, "# /etc/nsswitch.conf\n#\n# Example"..., 4096) = 475
close(3)                                = 0
munmap(0xb7eef000, 4096)                = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10106, ...}) = 0
mmap2(NULL, 10106, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eed000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libnss_compat.so.2", O_RDONLY) = 3
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=26340, ...}) = 0
mmap2(NULL, 29252, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7b31000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5) = 0xb7b37000
close(3)                                = 0
munmap(0xb7eed000, 10106)               = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10106, ...}) = 0
mmap2(NULL, 10106, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eed000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libnss_nis.so.2", O_RDONLY)  = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=34352, ...}) = 0
mmap2(NULL, 37436, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7b27000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7) = 0xb7b2f000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libnss_files.so.2", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=34320, ...}) = 0
mmap2(NULL, 37528, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7b1d000
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7) = 0xb7b25000
close(3)                                = 0
munmap(0xb7eed000, 10106)               = 0
open("/etc/passwd", O_RDONLY)           = 3
fcntl64(3, F_GETFD)                     = 0
fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
_llseek(3, 0, , SEEK_CUR)            = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 3, 0) = 0xb7eef000
_llseek(3, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(3)                                = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
open("/root/.ssh/config", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/etc/ssh/ssh_config", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1424, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7eef000
read(3, "\n# This is the ssh client system"..., 4096) = 1424
close(3)                                = 0
munmap(0xb7eef000, 4096)                = 0
getpid()                                = 3040
open("/dev/urandom", O_RDONLY|O_NONBLOCK|O_NOCTTY) = 3
fstat64(3, {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) = 0
poll([{fd=3, events=POLLIN, revents=POLLIN}], 1, 10) = 1
close(3)                                = 0
getuid32()                              = 0
time(NULL)                              = 978411225
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10106, ...}) = 0
mmap2(NULL, 10106, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eed000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = 0
open("/lib/libnss_db.so.2", O_RDONLY)   = -1 ENOENT (No such file or directory)
stat64("/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/lib/libnss_db.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/usr/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/lib/i486-linux-gnu/libnss_db.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)
stat64("/lib/i486-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/lib/i486-linux-gnu/libnss_db.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)
stat64("/usr/lib/i486-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
munmap(0xb7eed000, 10106)               = 0
open("/etc/services", O_RDONLY)         = 3
fcntl64(3, F_GETFD)                     = 0
fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=18038, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7eef000
read(3, "# Network services, Internet sty"..., 4096) = 4096
close(3)                                = 0
munmap(0xb7eef000, 4096)                = 0
bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
getsockname(3, {sa_family=AF_NETLINK, pid=3040, groups=00000000}, ) = 0
time(NULL)                              = 978411225
sendto(3, "\24\0\0\0\26\0\1\3\331^Q:\0\0\0\0\0\0\0\0", 20, 0,
{sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
msg_iov(1)=[{"<\0\0\0\24\0\2\0\331^Q:\340\v\0\0\2\10\200\376\1\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 128
msg_iov(1)=[{"@\0\0\0\24\0\2\0\331^Q:\340\v\0\0\n\200\200\376\1\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 128
msg_iov(1)=[{"\24\0\0\0\3\0\2\0\331^Q:\340\v\0\0\0\0\0\0\1\0\0\0\24\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 20
close(3)                                = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3
connect(3, {sa_family=AF_INET, sin_port=htons(22),
setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, , 4) = 0
setresuid32(-1, 0, -1)                  = 0
getuid32()                              = 0
getgid32()                              = 0
setregid32(0, 0)                        = 0
setreuid32(0, 0)                        = 0
getgid32()                              = 0
getegid32()                             = 0
getuid32()                              = 0
geteuid32()                             = 0
stat64("/root/.ssh", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
_llseek(4, 0, , SEEK_CUR)            = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 4, 0) = 0xb7eef000
_llseek(4, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(4)                                = 0
open("/root/.ssh/identity", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/identity", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/identity", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/identity.pub", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
_llseek(4, 0, , SEEK_CUR)            = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 4, 0) = 0xb7eef000
_llseek(4, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(4)                                = 0
open("/root/.ssh/id_rsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_rsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_rsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_rsa.pub", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
_llseek(4, 0, , SEEK_CUR)            = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 4, 0) = 0xb7eef000
_llseek(4, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(4)                                = 0
open("/root/.ssh/id_dsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_dsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_dsa", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
open("/root/.ssh/id_dsa.pub", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file
or directory)
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
_llseek(4, 0, , SEEK_CUR)            = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 4, 0) = 0xb7eef000
_llseek(4, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(4)                                = 0
open("/etc/passwd", O_RDONLY)           = 4
fcntl64(4, F_GETFD)                     = 0
fcntl64(4, F_SETFD, FD_CLOEXEC)         = 0
_llseek(4, 0, , SEEK_CUR)            = 0
fstat64(4, {st_mode=S_IFREG|0644, st_size=930, ...}) = 0
mmap2(NULL, 930, PROT_READ, MAP_SHARED, 4, 0) = 0xb7eef000
_llseek(4, 930, , SEEK_SET)        = 0
munmap(0xb7eef000, 930)                 = 0
close(4)                                = 0
rt_sigaction(SIGPIPE, NULL, {SIG_DFL}, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0
```
```
Best Regards,

----- Original Message ----
From: Derek Murray <Derek.Murray@xxxxxxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; Mark Williamson
<mark.williamson@xxxxxxxxxxxx>
Sent: Monday, January 7, 2008 10:12:49 PM
Subject: Re: [Xen-devel] xway issues / bugs

On Jan 7, 2008 10:27 AM, Muhammad Atif <m_atif_s@xxxxxxxxx> wrote:
```
```At the moment, I feel
that xd.c (the xway driver) is causing the problems and the function
```
``` is
```
```import_mem(...) and specific call is
BUG_ON(HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, ops,
```
``` npage)); ...

This sounds like the driver is trying (and failing) to map a list of
grant references. Usually when this happens, you will see some output
on the Xen console (which you can read by typing "xm dmesg" in Dom0,
or attaching a serial line). This may help the developers - or people
on this list - to diagnose the problem.

Hope this helps.

Regards,

Derek Murray.

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```

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