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Don't need to mark 0-NBPG as VM_PROT_NONE in kernel_map anymore; the 

first entry is now properly setup in kmem_init().
This commit is contained in:
thorpej 1996-10-19 21:11:32 +00:00
parent 7958973110
commit 7133ecf2ca
1 changed files with 6 additions and 7 deletions
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13
sys/arch/hp300/hp300/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.74 1996/10/19 08:51:33 thorpej Exp $ */
/* $NetBSD: machdep.c,v 1.75 1996/10/19 21:11:32 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -417,13 +417,12 @@ again:
nbuf, bufpages * CLBYTES);
/*
* Tell the VM system that page 0 isn't mapped and that
* writing to kernel text isn't allowed. If we don't
* do the latter, we might end up COW'ing the text segment!
* Tell the VM system that writing to kernel text isn't allowed.
* If we don't, we might end up COW'ing the text segment!
*
* XXX Should be hp300_trunc_page(&kernel_text) instead
* XXX of NBPG.
*/
if (vm_map_protect(kernel_map, 0, NBPG, VM_PROT_NONE, TRUE)
!= KERN_SUCCESS)
panic("can't mark page 0 off-limits");
if (vm_map_protect(kernel_map, NBPG, hp300_round_page(&etext),
VM_PROT_READ|VM_PROT_EXECUTE, TRUE) != KERN_SUCCESS)
panic("can't protect kernel text");