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Code Issues Releases Activity

Be a bit less fast and loose about setting non-cacheablity of pages.

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This commit is contained in:
David Greenman 1995-01-25 22:06:23 +00:00
parent 01ab76f4b8
commit 6100ed1d12
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=5910
2 changed files with 2 additions and 22 deletions
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12
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 1.42 1995/01/15 09:06:23 davidg Exp $
* $Id: pmap.c,v 1.43 1995/01/24 09:56:32 davidg Exp $
*/
/*
@ -1192,7 +1192,6 @@ pmap_enter(pmap, va, pa, prot, wired)
register pt_entry_t *pte;
register pt_entry_t npte;
vm_offset_t opa;
int cacheable = 1;
int ptevalid = 0;
if (pmap == NULL)
@ -1268,12 +1267,8 @@ pmap_enter(pmap, va, pa, prot, wired)
pv->pv_next = npv;
}
splx(s);
cacheable = 1;
} else {
cacheable = 0;
}
/*
* Increment counters
*/
@ -1286,11 +1281,6 @@ pmap_enter(pmap, va, pa, prot, wired)
* Now validate mapping with desired protection/wiring.
*/
npte = (pt_entry_t) ((int) (pa | pte_prot(pmap, prot) | PG_V));
/*
* for correctness:
*/
if (!cacheable)
(int) npte |= PG_N;
/*
* When forking (copy-on-write, etc): A process will turn off write

12
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 1.42 1995/01/15 09:06:23 davidg Exp $
* $Id: pmap.c,v 1.43 1995/01/24 09:56:32 davidg Exp $
*/
/*
@ -1192,7 +1192,6 @@ pmap_enter(pmap, va, pa, prot, wired)
register pt_entry_t *pte;
register pt_entry_t npte;
vm_offset_t opa;
int cacheable = 1;
int ptevalid = 0;
if (pmap == NULL)
@ -1268,12 +1267,8 @@ pmap_enter(pmap, va, pa, prot, wired)
pv->pv_next = npv;
}
splx(s);
cacheable = 1;
} else {
cacheable = 0;
}
/*
* Increment counters
*/
@ -1286,11 +1281,6 @@ pmap_enter(pmap, va, pa, prot, wired)
* Now validate mapping with desired protection/wiring.
*/
npte = (pt_entry_t) ((int) (pa | pte_prot(pmap, prot) | PG_V));
/*
* for correctness:
*/
if (!cacheable)
(int) npte |= PG_N;
/*
* When forking (copy-on-write, etc): A process will turn off write