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Code Issues Releases Activity

MFamd64: implement the PG_UNMANAGED flag on vm_pages.

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Alan noticed that alpha ignored PG_UNMANAGED when we were looking into
pmap_emulate_reference() panics.  Perhaps this will help.

Reviewed by: alc
This commit is contained in:
Andrew Gallatin 2004-04-26 17:49:05 +00:00
parent d429eede9f
commit 69e956d0a7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=128661
1 changed files with 9 additions and 4 deletions
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13
sys/alpha/alpha/pmap.c
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@ -1900,7 +1900,8 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot,
* raise IPL while manipulating pv_table since pmap_enter can be
* called at interrupt time.
*/
if (pmap_initialized && (m->flags & PG_FICTITIOUS) == 0) {
if (pmap_initialized &&
(m->flags & (PG_FICTITIOUS|PG_UNMANAGED)) == 0) {
pmap_insert_entry(pmap, va, mpte, m);
managed |= PG_MANAGED;
}
@ -1960,7 +1961,7 @@ vm_page_t
pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_page_t mpte)
{
register pt_entry_t *pte;
int managed;
/*
* In the case that a page table page is not
@ -2025,7 +2026,11 @@ pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_page_t mpte)
* raise IPL while manipulating pv_table since pmap_enter can be
* called at interrupt time.
*/
pmap_insert_entry(pmap, va, mpte, m);
managed = 0;
if ((m->flags & (PG_FICTITIOUS|PG_UNMANAGED)) == 0) {
pmap_insert_entry(pmap, va, mpte, m);
managed = PG_MANAGED | PG_FOR | PG_FOW | PG_FOE;
}
/*
* Increment counters
@ -2035,7 +2040,7 @@ pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_page_t mpte)
/*
* Now validate mapping with RO protection
*/
*pte = pmap_phys_to_pte(VM_PAGE_TO_PHYS(m)) | PG_V | PG_KRE | PG_URE | PG_MANAGED | PG_FOR | PG_FOE | PG_FOW;
*pte = pmap_phys_to_pte(VM_PAGE_TO_PHYS(m)) | PG_V | PG_KRE | PG_URE | managed;
alpha_pal_imb(); /* XXX overkill? */
return mpte;