> You don't seem to have a patch for sys/arch/acorn26/acorn26/machdep.c in
> the, but it contains the usual buffer-cache-setup boilerplate.  Similarly,
> there are calls to allocsys() in sys/arch/acorn26/acorn26/start.c, which
> will need excising.

Here it is..

There's also a patch for arch/sh3/sh3/pmap.c, which I missed as well.

-pk

--------
Index: arch/acorn26/acorn26/machdep.c
===================================================================
RCS file: /cvsroot/src/sys/arch/acorn26/acorn26/machdep.c,v
retrieving revision 1.10
diff -c -r1.10 machdep.c
*** arch/acorn26/acorn26/machdep.c	30 Sep 2003 00:35:30 -0000	1.10
--- arch/acorn26/acorn26/machdep.c	1 Dec 2003 16:34:14 -0000
***************
*** 146,154 ****
  void
  cpu_startup()
  {
- 	u_int i, base, residual;
  	vaddr_t minaddr, maxaddr;
- 	vsize_t size;
  	char pbuf[9];
  
  	/* Stuff to do here: */
--- 146,152 ----
***************
*** 158,206 ****
  	format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
  	printf("total memory = %s\n", pbuf);
  
- 	/* allocsys() is called from start() */
- 
  	/* Various boilerplate memory allocations. */
! 
! 	/*
! 	 * Allocate virtual address space for file I/O buffers.
! 	 * Note they are different than the array of headers, 'buf',
! 	 * and usually occupy more virtual memory than physical.
! 	 */
! 	size = MAXBSIZE * nbuf;
! 	if (uvm_map(kernel_map, (void *) &buffers, round_page(size),
! 		    NULL, UVM_UNKNOWN_OFFSET, 0,
! 		    UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE,
! 				UVM_ADV_NORMAL, 0)) != 0)
! 		panic("cpu_startup: cannot allocate VM for buffers");
! 	base = bufpages / nbuf;
! 	residual = bufpages % nbuf;
! 	for (i = 0; i < nbuf; i++) {
! 		vsize_t curbufsize;
! 		vaddr_t curbuf;
! 		struct vm_page *pg;
! 
! 		/*
! 		 * Each buffer has MAXBSIZE bytes of VM space allocated.  Of
! 		 * that MAXBSIZE space, we allocate and map (base+1) pages
! 		 * for the first "residual" buffers, and then we allocate
! 		 * "base" pages for the rest.
! 		 */
! 		curbuf = (vaddr_t) buffers + (i * MAXBSIZE);
! 		curbufsize = PAGE_SIZE * ((i < residual) ? (base+1) : base);
! 
! 		while (curbufsize) {
! 			pg = uvm_pagealloc(NULL, 0, NULL, 0);
! 			if (pg == NULL)
! 				panic("cpu_startup: not enough memory for "
! 				    "buffer cache");
! 			pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg),
! 			    VM_PROT_READ|VM_PROT_WRITE);
! 			curbuf += PAGE_SIZE;
! 			curbufsize -= PAGE_SIZE;
! 		}
! 	}
! 	pmap_update(pmap_kernel());
  
  	/*
  	 * Allocate a submap for exec arguments.  This map effectively
--- 156,163 ----
  	format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
  	printf("total memory = %s\n", pbuf);
  
  	/* Various boilerplate memory allocations. */
! 	minaddr = 0;
  
  	/*
  	 * Allocate a submap for exec arguments.  This map effectively
***************
*** 224,236 ****
  
  	format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
  	printf("avail memory = %s\n", pbuf);
- 	format_bytes(pbuf, sizeof(pbuf), bufpages * PAGE_SIZE);
- 	printf("using %u buffers containing %s of memory\n", nbuf, pbuf);
- 
- 	/*
- 	 * Set up buffers, so they can be used to read disk labels.
- 	 */
- 	bufinit();
  
  	curpcb = &lwp0.l_addr->u_pcb;
  
--- 181,186 ----
Index: arch/acorn26/acorn26/start.c
===================================================================
RCS file: /cvsroot/src/sys/arch/acorn26/acorn26/start.c,v
retrieving revision 1.4
diff -c -r1.4 start.c
*** arch/acorn26/acorn26/start.c	30 Sep 2003 00:35:30 -0000	1.4
--- arch/acorn26/acorn26/start.c	1 Dec 2003 16:34:14 -0000
***************
*** 93,100 ****
  start(initbootconfig)
  	struct bootconfig *initbootconfig;
  {
- 	size_t size;
- 	caddr_t v;
  	char pbuf[9];
  	int onstack;
  
--- 93,98 ----
***************
*** 154,176 ****
  	}
  #endif
  
- 	/*
- 	 * Allocate space for system data structures.  These data structures
- 	 * are allocated here instead of cpu_startup() because physical
- 	 * memory is directly addressable.  We don't have to map these into
- 	 * virtual address space.  This trick is stolen from the alpha port.
- 	 */
- 	size = (vsize_t)allocsys(0, NULL);
- 	v = MEMC_PHYS_BASE + bootconfig.freebase;
- 	bootconfig.freebase += size;
- 	if (bootconfig.freebase > ptoa(physmem)) {
- 		format_bytes(pbuf, sizeof(pbuf), size);
- 		panic("start: out of memory (wanted %s)", pbuf);
- 	}
- 	bzero(v, size);
- 	if ((allocsys(v, NULL) - v) != size)
- 		panic("start: table size inconsistency");
- 	
  	/* Tell UVM about memory */
  #if NARCVIDEO == 0
  	/*
--- 152,157 ----
Index: arch/sh3/sh3/pmap.c
===================================================================
RCS file: /cvsroot/src/sys/arch/sh3/sh3/pmap.c,v
retrieving revision 1.49
diff -c -r1.49 pmap.c
*** arch/sh3/sh3/pmap.c	10 Aug 2003 02:03:31 -0000	1.49
--- arch/sh3/sh3/pmap.c	1 Dec 2003 16:34:14 -0000
***************
*** 105,121 ****
  void
  pmap_bootstrap()
  {
- 	size_t sz;
- 	caddr_t v;
  
  	/* Steal msgbuf area */
  	initmsgbuf((caddr_t)uvm_pageboot_alloc(MSGBUFSIZE), MSGBUFSIZE);
- 
- 	/* Allocate space for system data structures. */
- 	sz = (size_t)allocsys(NULL, NULL);
- 	v = (caddr_t)uvm_pageboot_alloc(sz);
- 	if ((allocsys(v, NULL) - v) != sz)
- 		panic("pmap_bootstrap: table size inconsistency");
  
  	avail_start = ptoa(vm_physmem[0].start);
  	avail_end = ptoa(vm_physmem[vm_nphysseg - 1].end);
--- 105,113 ----