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calubro
Tux's lil' helper
Joined: 14 May 2005
Posts: 112
Location: vienna
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 Posted: Mon May 07, 2007 6:48 pm Post subject: [solved] xen boot errors |
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aloa again,
at my gentoo gouest i get the follwoing errors at boot:
| Code: | ***************************************************************
***************************************************************
** WARNING: Currently emulating unsupported memory accesses **
** in /lib/tls glibc libraries. The emulation is **
** slow. To ensure full performance you should **
** install a 'xen-friendly' (nosegneg) version of **
** the library, or disable tls support by executing **
** the following as root: **
** mv /lib/tls /lib/tls.disabled **
** Offending process: init (pid=1) **
***************************************************************
***************************************************************
Continuing...
8250: Unknown symbol uart_get_baud_rate
8250: Unknown symbol uart_resume_port
8250: Unknown symbol uart_register_driver
8250: Unknown symbol uart_suspend_port
8250: Unknown symbol uart_remove_one_port
8250: Unknown symbol uart_update_timeout
8250: Unknown symbol uart_unregister_driver
8250: Unknown symbol uart_get_divisor
8250: Unknown symbol uart_match_port
8250: Unknown symbol uart_add_one_port
8250: Unknown symbol uart_write_wakeup
modprobe: FATAL: Error inserting 8250 (/lib/modules/2.6.16.28-xen/kernel/drivers/serial/8250.ko): Unknown symbol in module, or unknown parameter (see dmesg) |
1. the warning,
like said, i did mv /lib/tls /lib/tls.disabled. and i also added "nptl -nptlonly" to the use flags like said at: https://forums.gentoo.org/viewtopic-t-344571-highlight-xm.html
then i did a emerge update --deep --newuse world
but i still get the warning at the boot.
2. 8250: Unknown symbol uart_* and modprobe: FATAL: Error
what can i do to fix this?
the system is booting and works like it should ... i think ... 
thx, greets cal
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Last edited by calubro on Sat May 12, 2007 12:58 pm; edited 1 time in total |
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TheAl
Tux's lil' helper
Joined: 22 Jan 2004
Posts: 134
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| Posted: Wed May 09, 2007 1:05 pm Post subject: Re: xen boot errors |
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| calubro wrote: | aloa again,
1. the warning,
like said, i did mv /lib/tls /lib/tls.disabled. and i also added "nptl -nptlonly" to the use flags like said at: https://forums.gentoo.org/viewtopic-t-344571-highlight-xm.html
then i did a emerge update --deep --newuse world
but i still get the warning at the boot.
l |
Take a look here : http://gentoo-wiki.com/Xen
| Quote: | Edit your /etc/make.conf and add '-mno-tls-direct-seg-refs' to your CFLAGS. This is similar to the Xen instructions to "mv /usr/lib/tls /usr/lib/tls.disabled", but instead removes the trapped (slow) opcodes for every binary, not just glibc. If using the -Os flag (with any <gcc-4), change it to -O2, as the compiler is known to produce broken code otherwise.
Note: The '-mno-tls-direct-seg-refs' flag does not make sense on any 64bit system. For such systems you can skip the recompilation of the whole world and just recompile glibc |
So just change your CFLAGS and you should be ok.
| calubro wrote: | 2. 8250: Unknown symbol uart_* and modprobe: FATAL: Error
what can i do to fix this?
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Again, follow the wiki and make sure :
* you compiled serial support in or module
* you didnt activate "Disable serial" in xen kernel configuration part. |
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calubro
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Joined: 14 May 2005
Posts: 112
Location: vienna
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| Posted: Sat May 12, 2007 12:57 pm Post subject: |
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thx, solved my problems 
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fbcyborg
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Joined: 16 Oct 2005
Posts: 3056
Location: ROMA
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| Posted: Tue Jun 08, 2010 7:50 am Post subject: |
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I there! I had the same problem for the dom0 kernel and I found this thread.
I get the following errors at the end of the compilation of the xen-sources-2.6.32-r1:
| Code: | LD vmlinux
SYSMAP System.map
Building modules, stage 2.
MODPOST 186 modules
OBJCOPY arch/x86/boot/vmlinux-stripped
GZIP arch/x86/boot/vmlinuz
ERROR: "uart_write_wakeup" [drivers/serial/8250.ko] undefined!
ERROR: "uart_add_one_port" [drivers/serial/8250.ko] undefined!
ERROR: "uart_match_port" [drivers/serial/8250.ko] undefined!
ERROR: "uart_get_divisor" [drivers/serial/8250.ko] undefined!
ERROR: "uart_unregister_driver" [drivers/serial/8250.ko] undefined!
ERROR: "uart_update_timeout" [drivers/serial/8250.ko] undefined!
ERROR: "uart_remove_one_port" [drivers/serial/8250.ko] undefined!
ERROR: "uart_suspend_port" [drivers/serial/8250.ko] undefined!
ERROR: "uart_register_driver" [drivers/serial/8250.ko] undefined!
ERROR: "uart_resume_port" [drivers/serial/8250.ko] undefined!
ERROR: "uart_get_baud_rate" [drivers/serial/8250.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
make: *** Waiting for unfinished jobs....
Kernel: arch/x86/boot/vmlinuz is ready (#2)
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It seems the image has been created but the errors above don't like me.
What's the problem?
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[HOWTO] Abilitare il supporto al dom0 XEN su kernel 3.X
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calubro
Tux's lil' helper
Joined: 14 May 2005
Posts: 112
Location: vienna
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| Posted: Tue Jun 08, 2010 8:07 am Post subject: |
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long time ago  ...
i'm not sure but i think changing useflags and editing kernel compile options as written above did the trick. this are the useflags of a working xen-domU:
| Code: |
CFLAGS="-O2 -march=i686 -pipe -mno-tls-direct-seg-refs"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
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fbcyborg
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Joined: 16 Oct 2005
Posts: 3056
Location: ROMA
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| Posted: Tue Jun 08, 2010 8:17 am Post subject: |
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Hi, thank you for the reply.
That CFLAGS are for portage, not for the kernel.
Anyway, I have this problem in the dom0 kernel! It never happened to me.
I think it's a bug.
TheAl said:
| Quote: | Again, follow the wiki and make sure :
* you compiled serial support in or module
* you didnt activate "Disable serial" in xen kernel configuration part. |
Serial support is compiled and "Disable serial" is enabled actually, but it is enabled in a previous version too, and it doesn't complain.
Actually, deactivating the "Disable serial" all goes fine.
O_O
I don't really know if it was necessary to me.
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[HOWTO] Come criptare la /home usando cryptsetup e luks
[HOWTO] Abilitare il supporto al dom0 XEN su kernel 3.X
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calubro
Tux's lil' helper
Joined: 14 May 2005
Posts: 112
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| Posted: Tue Jun 08, 2010 2:09 pm Post subject: |
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i wrote useflag and thought cflag ;(
i don't know much about dom0 setup because i always used gentoo as domU and Fedora dom0 ...
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fbcyborg
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