[linux-audio-user] Realtime-lsm for SuSE 9.3 x86_64 - Attn: Rui Nuno Capela

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Hi, list

Sometime ago (May) I asked about realtime under SUSE 9.3, and received the 
following advice from Rui (for which I am grateful). When it actually came 
down to it, I bottled out so never followed this through, opting to run all 
the applications I needed as root.

  "The way to go is installing kernel-source package and apply the
  realtime-lsm patch to the kernel source tree.

  "Just (re)build and install the patched kernel, but take special care to
  set the following, while on kernel configuration:

  CONFIG_SECURITY_CAPABILITIES=N
  CONFIG_SECURITY_REALTIME=M "

I'm a bit worried about mucking up my system (also used for general purpose 
computing), and I was hoping someone could give me some further advice:

  If I patch and reconfigure the kernel source, is that likely to break
  future compilation using the default kernel?

  Is it possible to copy the contents of /usr/src/linux-2.6.11.4-21.9/
  to another location (something like /usr/src/linux-2.6.11.4-21.9-rt)
  and apply the patch and compile there, or is it better just to patch
  the suse source directly, accessing it via the /usr/src/linux symlink?

  Also I noticed there's a directory called /usr/src/linux-2.6.11.4-21.9-obj

  Do patches automatically change the kernel identifier so that when I do
  a make modules_install it will create a new directory instead of copying
  them over the modules from the running kernel?  Is there a way to make
  sure it does?

  Is it OK to manually copy the vmlinuz and system.map file into /boot
  with a name appropriate to the kernel version?

  Is it good practice to reference kernels directly in the GRUB menu.lst
  by their real names rather than the symlink (when presenting the option
  to boot more then one)?

I'm really sorry for the basic questions - I'm still a relative newbie to 
Linux. I've thought about trying out a dedicated multimedia distro, but 
really comfortable with SuSE now.

Thanks in advance
-- 

David Haggett


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