o s/vhpt_size/pmap_vhpt_log2size/g

o  s/vhpt_base/pmap_vhpt_base/g
o  s/vhpt_bucket/pmap_vhpt_bucket/g
o  Declare the above in <machine/pmap.h>
o  Move the vm.stats.vhpt.* sysctls to machdep.vhpt.*
o  Create a tunable machdep.vhpt.log2size, with corresponding sysctl.
   The tunable allows the user to specify the VHPT size from the loader.
o  Don't keep track of the number of PTEs in the VHPT. Calculate the
   population when necessary by iterating the buckets and summing up
   the length of the buckets.
o  Don't perform the tpa instruction with a bucket lock held. The
   instruction can (theoretically) fault and locking is not needed.

1 files changed, 3 insertions, 0 deletions

diff --git a/sys/ia64/include/pmap.h b/sys/ia64/include/pmap.h
index b1f45e8..173d714 100644
--- a/sys/ia64/include/pmap.h
+++ b/sys/ia64/include/pmap.h
@@ -115,6 +115,9 @@ extern vm_offset_t phys_avail[];
 extern vm_offset_t virtual_avail;
 extern vm_offset_t virtual_end;
 
+extern uint64_t pmap_vhpt_base[];
+extern int pmap_vhpt_log2size;
+
 #define	pmap_page_is_mapped(m)	(!TAILQ_EMPTY(&(m)->md.pv_list))
 
 vm_offset_t pmap_steal_memory(vm_size_t);