[src/netbsd-1-4]: src/sys/uvm Pull up revision 1.28 (requested by drochner):

[he <he%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6c68f4370265
branches:  netbsd-1-4
changeset: 469898:6c68f4370265
user:      he <he%NetBSD.org@localhost>
date:      Mon Dec 20 13:30:31 1999 +0000

description:
Pull up revision 1.28 (requested by drochner):
  Allow booting of kernels which are larger than 16MB on i386.

diffstat:

 sys/uvm/uvm_page.c |  26 +++++++++++++++++++++++---
 1 files changed, 23 insertions(+), 3 deletions(-)

diffs (55 lines):

diff -r 4208dfd9a970 -r 6c68f4370265 sys/uvm/uvm_page.c
--- a/sys/uvm/uvm_page.c        Mon Dec 20 13:16:30 1999 +0000
+++ b/sys/uvm/uvm_page.c        Mon Dec 20 13:30:31 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_page.c,v 1.17.2.3 1999/06/18 17:04:56 perry Exp $  */
+/*     $NetBSD: uvm_page.c,v 1.17.2.4 1999/12/20 13:30:31 he Exp $     */
 
 /* 
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -463,9 +463,13 @@
  * => return false if out of memory.
  */
 
-boolean_t
-uvm_page_physget(paddrp)
+/* subroutine: try to allocate from memory chunks on the specified freelist */
+static boolean_t uvm_page_physget_freelist __P((paddr_t *, int));
+
+static boolean_t
+uvm_page_physget_freelist(paddrp, freelist)
        paddr_t *paddrp;
+       int freelist;
 {
        int lcv, x;
 
@@ -480,6 +484,9 @@
                if (vm_physmem[lcv].pgs)
                        panic("vm_page_physget: called _after_ bootstrap");
 
+               if (vm_physmem[lcv].free_list != freelist)
+                       continue;
+
                /* try from front */
                if (vm_physmem[lcv].avail_start == vm_physmem[lcv].start &&
                    vm_physmem[lcv].avail_start < vm_physmem[lcv].avail_end) {
@@ -550,6 +557,19 @@
 
        return (FALSE);        /* whoops! */
 }
+
+boolean_t
+uvm_page_physget(paddrp)
+       paddr_t *paddrp;
+{
+       int i;
+
+       /* try in the order of freelist preference */
+       for (i = 0; i < VM_NFREELIST; i++)
+               if (uvm_page_physget_freelist(paddrp, i) == TRUE)
+                       return (TRUE);
+       return (FALSE);
+}
 #endif /* PMAP_STEAL_MEMORY */
 
 /*