INSTALLATION OF PHYSMEM LIBRARY on SLC4
=======================================

Import physmem package from DDL homepage: 
http://cern.ch/ddl/physmem_v3.3.tgz 

To compile, enter:
> tar -xzf physmem_v3.3.tgz
> ln -s v3.3 physmem
> cd physmem
> make
> make driver
> make dev							# (as root)
> cp physmem.ko /lib/modules/`uname -r`/kernel/drivers/misc/	# (as root)
> /sbin/depmod							# (as root)
- Edit the file /boot/grub/menu.lst (as root).
  - Pass the argument 'mem=xxxM' to the kernel to limit LINUX memory to 
    xxxMegaBytes (xxx should be replaced by a number).
- Edit the file /etc/rc.modules (as root).
  - Add the line '/sbin/modprobe physmem physmemsize0=xxx' to limit 
    the size of the /dev/physmem0 PHYSMEM device to xxxMegaBytes. 
    The size of the /dev/physmem1 device will be the complement of the 
    LINUX memory and the /dev/physmem0 memory.
    RORC sw test programs use /dev/physmem0, while DATE uses /dev/physmem1
    memories.
> chmod +x /etc/rc.modules					# (as root)
- Switch off autoupdate by the following way (as root).
  > /etc/rc.d/init.d/yum-autoupdate stop
  - Check /var/lock/subsys/yum-autoupdate (have to create if missing).
  - Edit /etc/sysconfig/yum-autoupdate :
    YUMUPDATE=0
    YUMONBOOT=0
- Reboot.