svn commit: r364798 - head/sys/arm64/include

[D Scott Phillips]

Author: scottph
Date: Wed Aug 26 02:13:27 2020
New Revision: 364798
URL: https://svnweb.freebsd.org/changeset/base/364798

Log:
  arm64: Increase dmap size to 95 TiB
  
  The Ampere Altra has physical memory populated sparsely within the
  physical address space. Increase the size of the dmap to cover all
  physical memory.
  
  Reviewed by:	andrew
  Approved by:	scottl (implicit)
  MFC after:	1 week
  Sponsored by:	Ampere Computing, Inc.
  Differential Revision:	https://reviews.freebsd.org/D26134

Modified:
  head/sys/arm64/include/vmparam.h

Modified: head/sys/arm64/include/vmparam.h
==============================================================================
--- head/sys/arm64/include/vmparam.h	Wed Aug 26 02:12:15 2020	(r364797)
+++ head/sys/arm64/include/vmparam.h	Wed Aug 26 02:13:27 2020	(r364798)
@@ -156,8 +156,8 @@
 #define	VM_MIN_KERNEL_ADDRESS	(0xffff000000000000UL)
 #define	VM_MAX_KERNEL_ADDRESS	(0xffff008000000000UL)
 
-/* 2 TiB maximum for the direct map region */
-#define	DMAP_MIN_ADDRESS	(0xfffffd0000000000UL)
+/* 95 TiB maximum for the direct map region */
+#define	DMAP_MIN_ADDRESS	(0xffffa00000000000UL)
 #define	DMAP_MAX_ADDRESS	(0xffffff0000000000UL)
 
 #define	DMAP_MIN_PHYSADDR	(dmap_phys_base)