Author: markj
Date: Wed Jan 2 16:34:36 2019
New Revision: 342694
URL: https://svnweb.freebsd.org/changeset/base/342694
Log:
MFC r342099:
Avoid needless TLB invalidations 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 Wed Jan 2 16:33:49 2019
(r342693)
+++ stable/12/sys/riscv/riscv/pmap.c Wed Jan 2 16:34:36 2019
(r342694)
@@ -2754,9 +2754,10 @@ pmap_remove_pages(pmap_t pmap)
l3 = pmap_l2_to_l3(l2, pv->pv_va);
tl3 = pmap_load(l3);
-/*
- * We cannot remove wired pages from a process' mapping at this time
- */
+ /*
+ * We cannot remove wired pages from a
+ * process' mapping at this time.
+ */
if (tl3 & PTE_SW_WIRED) {
allfree = 0;
continue;
@@ -2775,7 +2776,6 @@ pmap_remove_pages(pmap_t pmap)
(uintmax_t)tl3));
pmap_load_clear(l3);
- pmap_invalidate_page(pmap, pv->pv_va);
/*
* Update the vm_page_t clean/reference bits.
@@ -2804,9 +2804,9 @@ pmap_remove_pages(pmap_t pmap)
free_pv_chunk(pc);
}
}
- pmap_invalidate_all(pmap);
if (lock != NULL)
rw_wunlock(lock);
+ pmap_invalidate_all(pmap);
rw_runlock(&pvh_global_lock);
PMAP_UNLOCK(pmap);
vm_page_free_pages_toq(&free, false);
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
