Messages in this thread | | | Date | Tue, 26 Nov 2002 12:37:32 -0700 | From | Andreas Dilger <> | Subject | Re: uml-patch-2.5.49-1 |
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On Nov 26, 2002 13:29 -0500, Jeff Dike wrote: > design cleanliness - a UP UML is inherently single-threaded, so it's > pointless to have many host processes when only one of them can be running. > A host process maps much more cleanly onto a UML processor than a UML process, > and a UML process maps much more cleanly onto a host address space than a > host process.
How does GDB now distinguish between UML processes? Previously, with GDB and UML one would "det; att <host pid>" to trace another process. Will there be equivalent functionality in the new setup?
I was just thinking about hacking the UML PID allocation code so that the UML process PID == host process PID, so that it is easier to debug multiple kernel threads (which are all called "kernel thread" and are hard to align with a specific UML kernel thread).
Will SMP UML "just" be a matter of forking the host process and sharing the /proc/mm file descriptors, along with a UML SMP scheduler and some IPC to decide which host process is running each UML process?
Cheers, Andreas -- Andreas Dilger http://sourceforge.net/projects/ext2resize/ http://www-mddsp.enel.ucalgary.ca/People/adilger/
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