Spliting IRQ between VM, RTC timer problem, IRQ 8 ...

["Sébastien CRAMATTE" <s.cramatte@wanadoo.fr>]

Hello,

I've just found post on the user list about Asterisk / Zaptel
ztdummy problem

Ztdummy use  rtc.ko  module and IRQ 8  ...
When I start the VM or If I done a modprobe of ztdummy,  the kernel tell 
me that resource is not free ...

rtc: IRQ 8 is not free.
WARNING: Error inserting rtc
(/lib/modules/2.6.16.19-xen/kernel/drivers/char/rtc.ko): Input/output error
ztdummy: Unknown symbol rtc_register
ztdummy: Unknown symbol rtc_unregister
ztdummy: Unknown symbol rtc_control
FATAL: Error inserting ztdummy
(/lib/modules/2.6.16.19-xen/misc/ztdummy.ko): Unknown symbol in module,
or unknown parameter (see dmesg)

--- cut ---
Zaptel Version: 1.2.6 Echo Canceller: KB1
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at kernel/timer.c:212
invalid opcode: 0000 [1] SMP
CPU 0
Modules linked in: ztdummy zaptel crc_ccitt ipv6 iptable_filter ip_tables x_tables sd_mod scsi_mod
Pid: 2089, comm: modprobe Not tainted 2.6.16-xenU #3
RIP: e030:[<ffffffff80136d7f>] <ffffffff80136d7f>{__mod_timer+31}
RSP: e02b:ffff8800079b7dd8  EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff80390e40 RCX: 0000000000000001
RDX: 000000010005fb0c RSI: 000000010005fb20 RDI: ffffffff80390e40
RBP: ffff8800079b7e08 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8800079b7da8 R11: 0000000000000000 R12: ffff880011218bd8
R13: 000000010005fb20 R14: 0000000000000000 R15: ffffffff8031d260
FS:  00002b7e76712640(0000) GS:ffffffff803b3000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000
Process modprobe (pid: 2089, threadinfo ffff8800079b6000, task ffff88001683a180)
Stack: ffff8800079b7ec8 0000000000000000 0000000000000000 ffff880011218bd8
       0000000000000000 00002b7e763d2000 ffff8800079b7ee8 ffffffff802268f2
       ffff8800079b7ecf 0000066600008124
Call Trace: <ffffffff802268f2>{rtc_do_ioctl+514} <ffffffff801bbebc>{proc_register+28}
       <ffffffff801bc2fc>{create_proc_entry+156} <ffffffff8808c405>{:zaptel:zt_register+389}
       <ffffffff80125ac0>{default_wake_function+0} <ffffffff8014c120>{__link_module+0}
       <ffffffff802274ea>{rtc_control+122} <ffffffff880c61ce>{:ztdummy:init_module+462}
       <ffffffff8014c251>{sys_init_module+257} <ffffffff8010b196>{system_call+134}
       <ffffffff8010b110>{system_call+0}

Code: 0f 0b 68 2e 36 2e 80 c2 d4 00 66 66 66 90 66 66 90 48 8d 75
RIP <ffffffff80136d7f>{__mod_timer+31} RSP <ffff8800079b7dd8>
--- cut ---


Does it exists a solution with  Xen 3.0.2 ?
To share this IRQ or give and access to IRQ 8 from dom0 ?

http://lists.xensource.com/archives/html/xen-users/2006-04/msg00452.html
http://lists.xensource.com/archives/html/xen-users/2006-07/msg00267.html

My Xen host run with debian sarge 3.1  and  I 've  exactly the same
problem when I try to load  ztdummy inside a domU

Thanks for your help

Regards

Sebastien