From 13e0058451b1fe2e4bb180ec867b3ba1b8850aa4 Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 5 Jul 2008 20:44:55 +0000
Subject: [PATCH] Increase the kernel map's size to 7GB, making room for a kmem
 map of size greater than 4GB.  (Auto-sizing will set the ceiling on the kmem
 map size to 4.2GB.)

---
 sys/amd64/include/pmap.h    | 4 ++--
 sys/amd64/include/vmparam.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sys/amd64/include/pmap.h b/sys/amd64/include/pmap.h
index 7d2847aea60..54b44843769 100644
--- a/sys/amd64/include/pmap.h
+++ b/sys/amd64/include/pmap.h
@@ -111,7 +111,7 @@
 
 /* Initial number of kernel page tables. */
 #ifndef NKPT
-#define	NKPT		2288
+#define	NKPT		2688
 #endif
 
 #define NKPML4E		1		/* number of kernel PML4 slots */
@@ -131,7 +131,7 @@
 #define	KPML4I		(NPML4EPG-1)	/* Top 512GB for KVM */
 #define	DMPML4I		(KPML4I-1)	/* Next 512GB down for direct map */
 
-#define	KPDPI		(NPDPEPG-6)	/* kernel map starts at -6GB */
+#define	KPDPI		(NPDPEPG-7)	/* kernel map starts at -7GB */
 
 /*
  * XXX doesn't really belong here I guess...
diff --git a/sys/amd64/include/vmparam.h b/sys/amd64/include/vmparam.h
index b2092589cce..e45f436b6ef 100644
--- a/sys/amd64/include/vmparam.h
+++ b/sys/amd64/include/vmparam.h
@@ -154,8 +154,8 @@
  * 0xffff800000000000 - 0xffff804020100fff   recursive page table (512GB slot)
  * 0xffff804020101000 - 0xfffffeffffffffff   unused
  * 0xffffff0000000000 - 0xffffff7fffffffff   512GB direct map mappings
- * 0xffffff8000000000 - 0xfffffffe7fffffff   unused (506GB)
- * 0xfffffffe80000000 - 0xffffffffffffffff   6GB kernel map
+ * 0xffffff8000000000 - 0xfffffffe3fffffff   unused (505GB)
+ * 0xfffffffe40000000 - 0xffffffffffffffff   7GB kernel map
  *
  * Within the kernel map:
  *