diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2008-06-24 21:24:04 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2008-06-24 21:24:04 +0000 |
| commit | eb30d8959a1448ff7a7b73c410533fd80508f0af (patch) | |
| tree | cfc8de5d0358f7748bb5089529c342104180deba /sys/arch/i386 | |
| parent | 3adb826ceb6fc3ab73eae18d801296aaefa6c8aa (diff) | |
On user/kernel shared page table machines, do not let processes map their
own page 0, as discussed with miod (and many others previously, including
art and toby). On sparc, make this __LDPGSZ because PAGE_SIZE is non-constant
ok miod tedu
Diffstat (limited to 'sys/arch/i386')
| -rw-r--r-- | sys/arch/i386/include/vmparam.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/arch/i386/include/vmparam.h b/sys/arch/i386/include/vmparam.h index 4e1e7ed7ef2..e871997fd43 100644 --- a/sys/arch/i386/include/vmparam.h +++ b/sys/arch/i386/include/vmparam.h @@ -1,4 +1,4 @@ -/* $OpenBSD: vmparam.h,v 1.39 2007/06/01 18:57:02 miod Exp $ */ +/* $OpenBSD: vmparam.h,v 1.40 2008/06/24 21:24:03 deraadt Exp $ */ /* $NetBSD: vmparam.h,v 1.15 1994/10/27 04:16:34 cgd Exp $ */ /*- @@ -96,7 +96,7 @@ #define DEADBEEF1 0xefffaabb /* pool's filler */ /* user/kernel map constants */ -#define VM_MIN_ADDRESS ((vaddr_t)0) +#define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) #define VM_MAXUSER_ADDRESS ((vaddr_t)((PDSLOT_PTE<<PDSHIFT) - USPACE)) #define VM_MAX_ADDRESS ((vaddr_t)((PDSLOT_PTE<<PDSHIFT) + \ (PDSLOT_PTE<<PGSHIFT))) |