4 commits

Author	SHA1	Message	Date
Peter Grehan	4daf20b2f1	Increase kernel VA from 256Mb to 512Mb by shifting the segment used ... for user copyinout down to 12, and keeping segments 13/14 for kernel VA. It would be nice to have more available, but segments lower than this are reserved for either memory or 1:1 mapped device i/o, and seg 15 is OpenFirmware ROM. Also, the effort to keep OpenFirmware available for callbacks limits the use of VA-mapped segments. Fortunately UMA_MD_SMALL_ALLOC takes away a lot of VM pressure. Obtained from: NetBSD	2004-03-02 06:49:21 +00:00
Peter Grehan	7c2779715c	Cleaned up param.h: ... - culled long-dead #define's - segment register defs moved to sr.h - NPMAPS moved to pmap.h - KERNBASE moved to vmparam.h - removed include of <machine/cpu.h> and fixed src files that relied on this. Modifying segment register code no longer causes gcc rebuilds :-)	2004-02-11 07:27:34 +00:00
Peter Grehan	db55e39aa1	Implement UMA_MD_SMALL_ALLOC, since the BAT registers allow direct ... addressing of memory. Makes a substantial improvement for apps that stress the limited amount of KVM on PPC (e.g. untarring the ports tree). uma_machdep.c stolen from amd64/ia64.	2004-01-29 00:32:22 +00:00
Benno Rice	f9bac91b18	Bring in NetBSD code used in the PowerPC port. ... Reviewed by: obrien, dfr Obtained from: NetBSD	2001-06-10 02:39:37 +00:00