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Kernel debugging with qemu

Hi all,

I have recently updated and simplified the wiki instructions for
setting up a qemu-based test environment for symbolic debugging
of the NetBSD kernel:

If there's a nagging kernel bug that you have long wanted to track
down but have been been put off by the difficulty of setting up a
remote kernel debugger, a lack of debug symbols, or lack of access to
the source code from the debugger, now would be a good time to give it
another try - it has never been easier.

The setup described in the wiki works for userland debugging, too -
just start a single VM instead of two, and gdb away.
Andreas Gustafsson,

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