Does this mean that setting the upper bits of the address would cause a fault?
-----Original Message----- From: Ferguson, Neale [mailto:[EMAIL PROTECTED]] Sent: Friday, February 14, 2003 10:17 AM To: [EMAIL PROTECTED] Subject: Re: IBM stops Linux Itanium effort The confusion may be that Linux for zSeries only implements 1 level of region table which gives 42 bit addressing. The architecture and processors support full 64-bit using 3 level of region table). -----Original Message----- IBM manuals disagree. They say that the z900 has full 64 bits of addressing. I have seen a description of the DAT that shows full 64 bit mapping. -----Original Message----- The current zSeries systems are not 64-bit addressing machines. They are 46- (48?-) bit addressing machines. So, once again, the word size is larger than the addressing size. I just hope IBM and everyone else learned their lesson from MVS/XA, and don't treat the "unused" high order bits to mean "special" things that get a lot of code built around them.
