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| author | luoqi <luoqi@FreeBSD.org> | 1999-01-08 14:20:54 +0000 |
|---|---|---|
| committer | luoqi <luoqi@FreeBSD.org> | 1999-01-08 14:20:54 +0000 |
| commit | 362bef31c50d2950b07d010176376dc219352a18 (patch) | |
| tree | e377e5ce622d7d23601152db04c08f01d07eb911 /sys/i386 | |
| parent | 3f69afe7b1d04e8e55d0cabe7b2df1dec9c84dc9 (diff) | |
| download | FreeBSD-src-362bef31c50d2950b07d010176376dc219352a18.zip FreeBSD-src-362bef31c50d2950b07d010176376dc219352a18.tar.gz | |
Allocate kernel page table object (kptobj) before any kmem_alloc calls.
On a system with a large amount of ram (e.g. 2G), allocation of per-page
data structures (512K physical pages) could easily bust the initial kernel
page table (36M), and growth of kernel page table requires kptobj.
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index 79cc809..92c3d2e 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 - * $Id: pmap.c,v 1.215 1998/12/07 21:58:18 archie Exp $ + * $Id: pmap.c,v 1.216 1999/01/07 22:15:51 dt Exp $ */ /* @@ -606,6 +606,11 @@ pmap_init(phys_start, phys_end) int initial_pvs; /* + * object for kernel page table pages + */ + kptobj = vm_object_allocate(OBJT_DEFAULT, NKPDE); + + /* * calculate the number of pv_entries needed */ vm_first_phys = phys_avail[0]; @@ -639,10 +644,6 @@ pmap_init(phys_start, phys_end) pvinit = (struct pv_entry *) kmem_alloc(kernel_map, initial_pvs * sizeof (struct pv_entry)); zbootinit(pvzone, "PV ENTRY", sizeof (struct pv_entry), pvinit, pv_npg); - /* - * object for kernel page table pages - */ - kptobj = vm_object_allocate(OBJT_DEFAULT, NKPDE); /* * Now it is safe to enable pv_table recording. |
