Author: marcel
Date: Thu Dec 26 05:46:10 2013
New Revision: 259908
URL: http://svnweb.freebsd.org/changeset/base/259908
Log:
For ia64, use pmap_remove_pages() and not pmap_remove(). The problem is
that we don't have a good way (yet) to iterate over the mapped pages by
virtual address and simply try each page within the range. Given that we
call pmap_remove() over the entire 2^63 bytes of address space, it takes
a while for pmap_remove to have tried all 2^50 pages.
By using pmap_remove_pages() we use the PV list to find all mappings.
Change derived from a patch by: alc
Modified:
head/sys/vm/vm_pageout.c
Modified: head/sys/vm/vm_pageout.c
==============================================================================
--- head/sys/vm/vm_pageout.c Thu Dec 26 05:22:38 2013 (r259907)
+++ head/sys/vm/vm_pageout.c Thu Dec 26 05:46:10 2013 (r259908)
@@ -875,6 +875,14 @@ vm_pageout_map_deactivate_pages(map, des
tmpe = tmpe->next;
}
+#ifdef __ia64__
+ /*
+ * Remove all non-wired, managed mappings if a process is swapped out.
+ * This will free page table pages.
+ */
+ if (desired == 0)
+ pmap_remove_pages(map->pmap);
+#else
/*
* Remove all mappings if a process is swapped out, this will free page
* table pages.
@@ -883,6 +891,8 @@ vm_pageout_map_deactivate_pages(map, des
pmap_remove(vm_map_pmap(map), vm_map_min(map),
vm_map_max(map));
}
+#endif
+
vm_map_unlock(map);
}
#endif /* !defined(NO_SWAPPING) */
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