svn commit: r348638 - stable/12/sys/riscv/riscv

[Mark Johnston]

Author: markj
Date: Tue Jun  4 17:25:22 2019
New Revision: 348638
URL: https://svnweb.freebsd.org/changeset/base/348638

Log:
  MFC r342764:
  Clear PGA_WRITEABLE in pmap_remove_pages().

Modified:
  stable/12/sys/riscv/riscv/pmap.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/riscv/riscv/pmap.c
==============================================================================
--- stable/12/sys/riscv/riscv/pmap.c	Tue Jun  4 17:24:52 2019	(r348637)
+++ stable/12/sys/riscv/riscv/pmap.c	Tue Jun  4 17:25:22 2019	(r348638)
@@ -2745,6 +2745,9 @@ pmap_remove_pages(pmap_t pmap)
 				pmap_resident_count_dec(pmap, 1);
 				TAILQ_REMOVE(&m->md.pv_list, pv, pv_next);
 				m->md.pv_gen++;
+				if (TAILQ_EMPTY(&m->md.pv_list) &&
+				    (m->aflags & PGA_WRITEABLE) != 0)
+					vm_page_aflag_clear(m, PGA_WRITEABLE);
 
 				pmap_unuse_l3(pmap, pv->pv_va, ptepde, &free);
 				freed++;