CVS: cvs.openbsd.org: src

[Artur Grabowski <art_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org>]

CVSROOT:	/cvs
Module name:	src
Changes by:	art_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org	1999/12/09 14:35:29

Modified files:
	sys/arch/sparc/include: pmap.h 
	sys/arch/sparc/sparc: pmap.c cpu.c 

Log message:
Fix a bug we've had for ages.
On some sun4m the pagetables must be uncached. This is indicated by the
CPUFLG_CACHEPAGETABLES in cpuinfo.flags. This was done in pmap_bootstrap4m.
The problem is that the CPUFLG_CACHEPAGETABLES is not set until after
pmap_bootstrap4m, so even the machines that could cache the pagetables
had them uncached, reducing performance.
Fix this by creating pmap_cache_enable that is called just after the
cache has been switched on (XXX - actually, we should call it before, but
CPUFLG_CACHEPAGETABLES can be set in the code that enables the cache).