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MFC r197317

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When superpages are enabled, add the 2 or 4MB page size to the array of
  supported page sizes.
This commit is contained in:
Alan Cox 2009-10-31 19:02:08 +00:00
parent ebc91405bd
commit 13529df13b
2 changed files with 10 additions and 0 deletions
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5
sys/amd64/amd64/pmap.c
View File

@ -663,6 +663,11 @@ 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.

5
sys/i386/i386/pmap.c
View File

@ -673,6 +673,11 @@ 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.