jclark@sdcc6.ucsd.edu (John Clark) (05/10/91)
The BSD vm_* code I have is set up for at most a two level MMU scheme. Does anyone have any any ideas for a 3 level version. In particular, page table entry allocation, saving the contexts to swap disks. The examples I have introduce a segment table featurette to handle the two level system. It seems by extension, a second segment table idea is needed for a 3 level MMU scheme. For particular CPU's two level version is for 68030, three level is for 68040. The '40 has a fixed 3 level table structure. The '30 could have up to 5 levels but for the implementations I have, the level was fixed at 2. -- John Clark jclark@ucsd.edu
torek@elf.ee.lbl.gov (Chris Torek) (05/11/91)
In article <19196@sdcc6.ucsd.edu> jclark@sdcc6.ucsd.edu (John Clark) writes: >The BSD vm_* code I have is set up for at most a two level MMU >scheme. Does anyone have any any ideas for a 3 level version. A: get the Utah HP-BSD distribution and look at the 68030 support, or B: wait for 4.4BSD. -- In-Real-Life: Chris Torek, Lawrence Berkeley Lab CSE/EE (+1 415 486 5427) Berkeley, CA Domain: torek@ee.lbl.gov