1992/0630/gnot/mmu.c (diff list | history)

1992/0625/sys/src/9/gnot/mmu.c:82,93 – 1992/0630/sys/src/9/gnot/mmu.c:82,94 (short | long | prev | next)
1990/06021		kmapinit(void) {
1992/0625		int i;
1992/0630		ulong endscreen;
1992/0625		Page *p;
1990/06021		KMap *k; if(kmapalloc.init == 0){ k = &kmapalloc.arena[0];
1991/0821		k->va = KZERO|(MB4-256*1024-BY2PG);
1992/0630		k->va = KZERO|(MB4-BY2PG);
1990/06021		k->next = 0; kmapalloc.free = k; kmapalloc.init = 1;
1992/0625/sys/src/9/gnot/mmu.c:95,103 – 1992/0630/sys/src/9/gnot/mmu.c:96,108
1990/06021		}
1991/0821
1992/0625		i = 0; /* Reclaim map register for pages in bank0 */
1992/0630		/* * Reclaim map register for pages in bank0; * screen is in virtual space overlaying physical pages; be careful */ endscreen = (PGROUND((ulong)end)&~KZERO) + 256*1024;
1992/0625		for(p = palloc.head; p; p = p->next) { if(p->pa < MB4) {
1992/0630		if(p->pa >= endscreen && p->pa < MB4) {
1992/0625		k = &kmapalloc.arena[p->pa/BY2PG]; k->va = p->pa|KZERO; kunmap(k);