Author: alc
Date: Fri Sep 18 17:09:33 2009
New Revision: 197317
URL: http://svn.freebsd.org/changeset/base/197317
Log:
When superpages are enabled, add the 2 or 4MB page size to the array of
supported page sizes.
Reviewed by: jhb
MFC after: 3 weeks
Modified:
head/sys/amd64/amd64/pmap.c
head/sys/i386/i386/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Fri Sep 18 17:04:57 2009 (r197316)
+++ head/sys/amd64/amd64/pmap.c Fri Sep 18 17:09:33 2009 (r197317)
@@ -701,6 +701,11 @@ pmap_init(void)
* Are large page mappings enabled?
*/
TUNABLE_INT_FETCH("vm.pmap.pg_ps_enabled", &pg_ps_enabled);
+ if (pg_ps_enabled) {
+ KASSERT(MAXPAGESIZES > 1 && pagesizes[1] == 0,
+ ("pmap_init: can't assign to pagesizes[1]"));
+ pagesizes[1] = NBPDR;
+ }
/*
* Calculate the size of the pv head table for superpages.
Modified: head/sys/i386/i386/pmap.c
==============================================================================
--- head/sys/i386/i386/pmap.c Fri Sep 18 17:04:57 2009 (r197316)
+++ head/sys/i386/i386/pmap.c Fri Sep 18 17:09:33 2009 (r197317)
@@ -702,6 +702,11 @@ pmap_init(void)
* Are large page mappings enabled?
*/
TUNABLE_INT_FETCH("vm.pmap.pg_ps_enabled", &pg_ps_enabled);
+ if (pg_ps_enabled) {
+ KASSERT(MAXPAGESIZES > 1 && pagesizes[1] == 0,
+ ("pmap_init: can't assign to pagesizes[1]"));
+ pagesizes[1] = NBPDR;
+ }
/*
* Calculate the size of the pv head table for superpages.
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