Author: markj
Date: Wed Oct 23 13:41:26 2019
New Revision: 353922
URL: https://svnweb.freebsd.org/changeset/base/353922
Log:
MFC r353650:
Clear PGA_WRITEABLE in moea_pvo_remove().
Modified:
stable/12/sys/powerpc/aim/mmu_oea.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/powerpc/aim/mmu_oea.c
==============================================================================
--- stable/12/sys/powerpc/aim/mmu_oea.c Wed Oct 23 13:40:39 2019
(r353921)
+++ stable/12/sys/powerpc/aim/mmu_oea.c Wed Oct 23 13:41:26 2019
(r353922)
@@ -2120,23 +2120,26 @@ moea_pvo_remove(struct pvo_entry *pvo, int pteidx)
pvo->pvo_pmap->pm_stats.wired_count--;
/*
+ * Remove this PVO from the PV and pmap lists.
+ */
+ LIST_REMOVE(pvo, pvo_vlink);
+ RB_REMOVE(pvo_tree, &pvo->pvo_pmap->pmap_pvo, pvo);
+
+ /*
* Save the REF/CHG bits into their cache if the page is managed.
+ * Clear PGA_WRITEABLE if all mappings of the page have been removed.
*/
if ((pvo->pvo_vaddr & PVO_MANAGED) == PVO_MANAGED) {
- struct vm_page *pg;
+ struct vm_page *pg;
pg = PHYS_TO_VM_PAGE(pvo->pvo_pte.pte.pte_lo & PTE_RPGN);
if (pg != NULL) {
moea_attr_save(pg, pvo->pvo_pte.pte.pte_lo &
(PTE_REF | PTE_CHG));
+ if (LIST_EMPTY(&pg->md.mdpg_pvoh))
+ vm_page_aflag_clear(pg, PGA_WRITEABLE);
}
}
-
- /*
- * Remove this PVO from the PV and pmap lists.
- */
- LIST_REMOVE(pvo, pvo_vlink);
- RB_REMOVE(pvo_tree, &pvo->pvo_pmap->pmap_pvo, pvo);
/*
* Remove this from the overflow list and return it to the pool
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