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680085
2007 Apr 18
0
[RFC, PATCH 11/24] i386 Vmi segment changes
Make the Linux kernel able to run at CPL 0, 1, or 2. There are a few
limited places where CPL-0 is assumed, and they can be converted very
efficiently into a supervisor CPL check instead of a CPL-0 check.
This step prepares the kernel for running in direct execution under
a hypervisor.
Note the user_mode_vm macro used in ptrace.h is very similar to the
flag mixing of EFLAGS and CS used to test