DR Kernel Cage is DISABLED

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系统启动时会提示NOTICE: DR Kernel Cage is DISABLED
如下：
Jun 19 12:57:34 DB114 genunix: [ID 540533 kern.notice] ^MSunOS Release 5.8 Version Generic_108528-09 64-bit
Jun 19 12:57:34 DB114 genunix: [ID 913631 kern.notice] Copyright 1983-2001 Sun Microsystems, Inc.  All rights reserved.
Jun 19 12:57:34 DB114 genunix: [ID 678236 kern.info] Ethernet address = 8:0:20:8a:fa:54
Jun 19 12:57:34 DB114 unix: [ID 597320 kern.info] NOTICE: DR Kernel Cage is DISABLED


解释：
The location of nonpageable memory (that is, OBP and *kernel* memory), the *kernel* *cage*, resides in the highest physical address space。
A caged kernel confines the nonpageable memory to a minimal (most often one) number of systems boards. By default, the kernel cage is disabled, preventing DR Detach operations.


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