Hi

I am having a problem getting an initial login prompt on my UML
and it's related to CONFIG_FRAME_POINTER (my host system
is a x86_64 machine running 2.6.16).

With a 2.6.16 codebase (and it has the x86_64 patch referenced
in http://www.ussg.iu.edu/hypermail/linux/kernel/0510.1/0185.html),
I observe:

1. With CONFIG_FRAME_POINTER enabled in .config, bootup stops after
  "VFS: Mounted root (ext2 filesystem) readonly" and stderr
  shows the message unable to open console.

2. With CONFIG_FRAME_POINTER disabled, it works! (I get a login prompt
  and get a bash shell).

I am using a gentoo x86_64 stage 3 tarball as the base for my
root_fs.

Just curious why this is and if I am supposed to have frame
pointers omitted.

Some other observations (if they help):

1. I went to a 2.6.13 codebase for my UML, and it all works
  regardless of the FRAME_POINTER config.

2. I removed the patch above, and as expected the UML crashes
  when CONFIG_FRAME_POINTER is disabled. It boots up fine
  with CONFIG_FRAME_POINTER enabled.

Please let me know if I can provide any other information.

thanks.
shalb




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