diff --git a/sys/arm64/include/param.h b/sys/arm64/include/param.h
index a01b37da84c5..f331fd19e2c8 100644
--- a/sys/arm64/include/param.h
+++ b/sys/arm64/include/param.h
@@ -1,134 +1,125 @@
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
  * $FreeBSD$
  */
 
 #ifndef _MACHINE_PARAM_H_
 #define	_MACHINE_PARAM_H_
 
 /*
  * Machine dependent constants for arm64.
  */
 
 #include <machine/_align.h>
 
 #define	STACKALIGNBYTES	(16 - 1)
 #define	STACKALIGN(p)	((uint64_t)(p) & ~STACKALIGNBYTES)
 
 #define	__PCI_REROUTE_INTERRUPT
 
 #ifndef MACHINE
 #define	MACHINE		"arm64"
 #endif
 #ifndef MACHINE_ARCH
 #define	MACHINE_ARCH	"aarch64"
 #endif
 #ifndef MACHINE_ARCH32
 #define	MACHINE_ARCH32	"armv7"
 #endif
 
 #ifdef SMP
 #ifndef MAXCPU
 #define	MAXCPU		256
 #endif
 #else
 #define	MAXCPU		1
 #endif
 
 #ifndef MAXMEMDOM
 #define	MAXMEMDOM	8
 #endif
 
 #define	ALIGNBYTES	_ALIGNBYTES
 #define	ALIGN(p)	_ALIGN(p)
 /*
  * ALIGNED_POINTER is a boolean macro that checks whether an address
  * is valid to fetch data elements of type t from on this architecture.
  * This does not reflect the optimal alignment, just the possibility
  * (within reasonable limits).
  */
 #define	ALIGNED_POINTER(p, t)	((((u_long)(p)) & (sizeof(t) - 1)) == 0)
 
 /*
  * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
  * architecture.  It should be used with appropriate caution.
  */
 #define	CACHE_LINE_SHIFT	7
 #define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
 
 #define	PAGE_SHIFT_4K	12
 #define	PAGE_SIZE_4K	(1 << PAGE_SHIFT_4K)
 #define	PAGE_MASK_4K	(PAGE_SIZE_4K - 1)
 
 #define	PAGE_SHIFT_16K	14
 #define	PAGE_SIZE_16K	(1 << PAGE_SHIFT_16K)
 #define	PAGE_MASK_16K	(PAGE_SIZE_16K - 1)
 
 #define	PAGE_SHIFT_64K	16
 #define	PAGE_SIZE_64K	(1 << PAGE_SHIFT_64K)
 #define	PAGE_MASK_64K	(PAGE_SIZE_64K - 1)
 
 #define	PAGE_SHIFT	PAGE_SHIFT_4K
 #define	PAGE_SIZE	PAGE_SIZE_4K
 #define	PAGE_MASK	PAGE_MASK_4K
 
 #define	MAXPAGESIZES	3		/* maximum number of supported page sizes */
 
 #ifndef KSTACK_PAGES
 #define	KSTACK_PAGES	4	/* pages of kernel stack (with pcb) */
 #endif
 
 #define	KSTACK_GUARD_PAGES	1	/* pages of kstack guard; 0 disables */
 #define	PCPU_PAGES		1
 
-/*
- * Ceiling on size of buffer cache (really only effects write queueing,
- * the VM page cache is not effected), can be changed via
- * the kern.maxbcache /boot/loader.conf variable.
- */
-#ifndef VM_BCACHE_SIZE_MAX
-#define	VM_BCACHE_SIZE_MAX      (400 * 1024 * 1024)
-#endif
-
 /*
  * Mach derived conversion macros
  */
 #define	round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
 #define	trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
 
 #define	atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
 #define	ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
 
 #define	arm64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
 #define	arm64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
 
 #define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
 
 #endif /* !_MACHINE_PARAM_H_ */