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Clear kernel stack pages before usage.

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Correct panic message in pmap_zero_page (s/CMAP /CMAP2 /).
This commit is contained in:
Tor Egge 1998-05-17 17:43:13 +00:00
parent 6680ea138a
commit cf4b29e405
2 changed files with 12 additions and 6 deletions
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9
sys/amd64/amd64/pmap.c
View File

@ -39,7 +39,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.196 1998/05/11 08:11:57 dyson Exp $
* $Id: pmap.c,v 1.197 1998/05/15 07:25:25 dyson Exp $
*/
/*
@ -962,8 +962,11 @@ pmap_new_proc(p)
/*
* Get a kernel stack page
*/
m = vm_page_grab(upobj, i, VM_ALLOC_NORMAL | VM_ALLOC_RETRY);
m = vm_page_grab(upobj, i, VM_ALLOC_ZERO | VM_ALLOC_RETRY);
if ((m->flags & PG_ZERO) == 0)
vm_page_zero_fill(m);
/*
* Wire the page
*/
@ -2784,7 +2787,7 @@ pmap_zero_page(phys)
#else
#if !defined(MAX_PERF)
if (*(int *) CMAP2)
panic("pmap_zero_page: CMAP busy");
panic("pmap_zero_page: CMAP2 busy");
#endif
*(int *) CMAP2 = PG_V | PG_RW | (phys & PG_FRAME) | PG_A | PG_M;

9
sys/i386/i386/pmap.c
View File

@ -39,7 +39,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.196 1998/05/11 08:11:57 dyson Exp $
* $Id: pmap.c,v 1.197 1998/05/15 07:25:25 dyson Exp $
*/
/*
@ -962,8 +962,11 @@ pmap_new_proc(p)
/*
* Get a kernel stack page
*/
m = vm_page_grab(upobj, i, VM_ALLOC_NORMAL | VM_ALLOC_RETRY);
m = vm_page_grab(upobj, i, VM_ALLOC_ZERO | VM_ALLOC_RETRY);
if ((m->flags & PG_ZERO) == 0)
vm_page_zero_fill(m);
/*
* Wire the page
*/
@ -2784,7 +2787,7 @@ pmap_zero_page(phys)
#else
#if !defined(MAX_PERF)
if (*(int *) CMAP2)
panic("pmap_zero_page: CMAP busy");
panic("pmap_zero_page: CMAP2 busy");
#endif
*(int *) CMAP2 = PG_V | PG_RW | (phys & PG_FRAME) | PG_A | PG_M;