# /platform/sun4u/boot.conf # # name/value pairs used to augment boot(1M) policy. # # ALLOW_64BIT_KERNEL_ON_UltraSPARC_1_CPU # # On systems containing 200MHz or lower UltraSPARC-I processors, # it is possible for a user to run a 64-bit program designed to exploit a # problem that could cause the processor to stall. Since 64-bit programs # cannot run on the 32-bit kernel, the 32-bit kernel is chosen as the # default boot file on these systems. # # The code sequence that exploits the problem is very unusual and is not # likely to be generated by a compiler. Assembler code had to be # specifically written to demonstrate the problem. It is highly unlikely # that a legitimate handwritten assembler routine would use this code sequence. # # Users willing to assume the risk that a user might accidentally or # deliberately run a program designed to cause a processor to stall # may choose to run the 64-bit kernel by uncommenting the following item: # ALLOW_64BIT_KERNEL_ON_UltraSPARC_1_CPU=true
