NetBSD master CVS tree commits

[The Source of All Evil <source%NetBSD.ORG@localhost>]

thorpej
Wed Mar 18 15:55:25 PST 1998
Update of /cvsroot/src/sys/arch/alpha/alpha
In directory nb00:/tmp/cvs-serv23774

Modified Files:
        pmap.old.c 
Log Message:
Add a macro to invalidate the TLB for a given pmap/va pair.  TLB
invalidation algorithm:

        if (old mapping had PG_ASM set || pmap is active) {
                TIBS(va);
                if (also sync I-stream)
                        imb();
        }

The check for "old mapping had PG_ASM" will get all kernel mappings (since
kernel mappings always have PG_ASM set).

This allows us to remove the bogus check for the kernel pmap in
active_pmap() - do so.

Use the new TLB invalidation macro whenever such action is needed.