211f71325a
x86_userspace_thread_exit() is a stub originally placed at the bottom of each thread user stack that ensures any thread invokes exit_thread() upon returning from its main higher level function. Putting anything that is expected to be executed on a stack causes problems when implementing data execution prevention. Code of x86_userspace_thread_exit() is now moved to commpage which seems to be much more appropriate place for it. |
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