From ddc6d86ca308a0eadb79dcdbf69d4d4a33ffbaab Mon Sep 17 00:00:00 2001
From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Fri, 29 Nov 2002 20:10:21 +0000
Subject: Better handle sparse physical memory: Don't use the address range as
 a measure for available memory to scale the VHPT. Instead, use the previously
 determined Maxmem.

Approved by: re (carte blanc)
---
 sys/ia64/ia64/pmap.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'sys')

diff --git a/sys/ia64/ia64/pmap.c b/sys/ia64/ia64/pmap.c
index 3dea505820905..4165d739fef96 100644
--- a/sys/ia64/ia64/pmap.c
+++ b/sys/ia64/ia64/pmap.c
@@ -360,9 +360,12 @@ pmap_bootstrap()
 	 * physical memory and try to locate a region which is large
 	 * enough to contain the VHPT (which must be a power of two in
 	 * size and aligned to a natural boundary).
+	 * Don't use the difference between avail_start and avail_end
+	 * as a measure for memory size. The address space is often
+	 * enough sparse, causing us to (try to) create a huge VHPT.
 	 */
 	vhpt_size = 15;
-	while ((1<<vhpt_size) < ia64_btop(avail_end - avail_start) * 32)
+	while ((1<<vhpt_size) < ia64_btop(Maxmem) * 32)
 		vhpt_size++;
 
 	vhpt_base = 0;
@@ -451,13 +454,6 @@ pmap_bootstrap()
 	 */
 	ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (28 << 2));
 	ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (28 << 2));
-			 
-	/*
-	 * Set up proc0's PCB.
-	 */
-#if 0
-	thread0.td_pcb->pcb_hw.apcb_asn = 0;
-#endif
 
 	/*
 	 * Reserve some memory for allocating pvs while bootstrapping
-- 
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