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From: dave@visual1.jhuapl.edu (Dave Weintraub)
Newsgroups: comp.lang.asm370
Subject: Re: New System/3x0 Instruction
Message-ID: <1991Mar11.144621.17872@aplcen.apl.jhu.edu>
Date: 11 Mar 91 14:46:21 GMT
References: <1991Mar8.173043.26275@aplcen.apl.jhu.edu> <9103101907.AA18725@ucbvax.Berkeley.EDU>
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In article <9103101907.AA18725@ucbvax.Berkeley.EDU>, rickert@CS.NIU.EDU (Neil Rickert) writes:

|> 
|>  You can't do that in an instruction.  An SVC routine -- yes.  An
|> instruction -- no.  The page tables are not a hardware feature but a
|> creation of the operating system.  Therefore a hardware instruction
|> cannot manipulate them.
|> 

Perhaps I did not make the point clear enough.  It is not the intent to 
have the instruction perform page table manipulation.  It is the intent
to give the operating system the option of observing when swapping
is NOT required, but rather just the mark-up of the page tables.