Messages in this thread | | | Subject | User-mode kernel update | Date | Tue, 22 Jun 1999 00:32:26 -0300 | From | Jeff Dike <> |
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The following things are new and improved:
It now requires much less in the way of changes to the hosting kernel. 2.0 kernels require a two-line patch. It ought to run on unchanged 2.2 kernels, although I haven't tested this.
It is noticeably faster. It still won't win many benchmarks, though.
There is a web page (http://www.mv.com/ipusers/karaya/uml/uml.html) describing it with links to the various things that can be downloaded.
There are a ready-made root filesystem and a binary distribution available. If you just want to play with it and don't feel like building from source, these two items will get you going.
The actual changes that were made involved getting fault information from the sigcontext_struct that's on the stack in the seg fault signal handler, rather than from /proc/[pid]/fault and doing system call forwarding using ptrace rather than an exec_domain module.
Jeff
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