> 
> The file /sys/vm/vm_swap.c has changed substantially.  It looks like the
> 4.3 BSD swapper functionality has been incorporated into the Mach VM
> system.
> 
> One consequence of this is that swapinit() expects the swdevt array to
> be terminated differently than from before.  The swapgeneric.c module
> does not do this properly.  So, if you build a GENERIC kernel, you get
> panic: swfree.

This is what I patched on my sources to get back going again:

*** ./arch/amiga/amiga/swapgeneric.c-orig	Fri Apr 22 03:13:20 1994
--- ./arch/amiga/amiga/swapgeneric.c	Sat May  7 20:06:07 1994
***************
*** 53,60 ****
  dev_t	dumpdev = NODEV;
  int	nswap;
  struct	swdevt swdevt[] = {
! 	{ -1,	1,	0 },
! 	{ 0,	0,	0 },
  };
  int	dmmin, dmmax, dmtext;
  
--- 53,60 ----
  dev_t	dumpdev = NODEV;
  int	nswap;
  struct	swdevt swdevt[] = {
! 	{ NODEV, SW_FREED,	0 },
! 	{ NODEV,	0,	0 },
  };
  int	dmmin, dmmax, dmtext;
  
*** ./arch/amiga/amiga/autoconf.c-orig	Fri Apr 22 03:13:19 1994
--- ./arch/amiga/amiga/autoconf.c	Sat May  7 20:16:25 1994
***************
*** 951,957 ****
  	register struct swdevt *swp;
  	register int nblks;
  
! 	for (swp = swdevt; swp->sw_dev; swp++) {
  		if (bdevsw[major(swp->sw_dev)].d_psize) {
  			nblks =
  			    bdevsw[major(swp->sw_dev)].d_psize(swp->sw_dev);
--- 951,957 ----
  	register struct swdevt *swp;
  	register int nblks;
  
! 	for (swp = swdevt; swp->sw_dev != NODEV; swp++) {
  		if (bdevsw[major(swp->sw_dev)].d_psize) {
  			nblks =
  			    bdevsw[major(swp->sw_dev)].d_psize(swp->sw_dev);
***************
*** 1094,1100 ****
  
  #ifdef DOSWAP
  	mindev &= ~PARTITIONMASK;
! 	for (swp = swdevt; swp->sw_dev; swp++) {
  		if (majdev == major(swp->sw_dev) &&
  		    mindev == (minor(swp->sw_dev) & ~PARTITIONMASK)) {
  			temp = swdevt[0].sw_dev;
--- 1094,1100 ----
  
  #ifdef DOSWAP
  	mindev &= ~PARTITIONMASK;
! 	for (swp = swdevt; swp->sw_dev != NODEV; swp++) {
  		if (majdev == major(swp->sw_dev) &&
  		    mindev == (minor(swp->sw_dev) & ~PARTITIONMASK)) {
  			temp = swdevt[0].sw_dev;

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