PERFORCE change 57308 for review

[Peter Wemm]

http://perforce.freebsd.org/chv.cgi?CH=57308

Change 57308 by peter at peter_melody on 2004/07/14 01:01:11

	Fix vtopde().  Use PAGE_SHIFT/PDRSHIFT for clarity so that they
	can be compared to the pte_index/pde_index routines above.

Affected files ...

.. //depot/projects/hammer/sys/amd64/amd64/pmap.c#91 edit

Differences ...

==== //depot/projects/hammer/sys/amd64/amd64/pmap.c#91 (text+ko) ====

@@ -356,7 +356,7 @@
 {
 	u_int64_t mask = ((1ul << (NPTEPGSHIFT + NPDEPGSHIFT + NPDPEPGSHIFT + NPML4EPGSHIFT)) - 1);
 
-	return (PTmap + (amd64_btop(va) & mask));
+	return (PTmap + ((va >> PAGE_SHIFT) & mask));
 }
 
 static __inline pd_entry_t *
@@ -364,7 +364,7 @@
 {
 	u_int64_t mask = ((1ul << (NPDEPGSHIFT + NPDPEPGSHIFT + NPML4EPGSHIFT)) - 1);
 
-	return (PTmap + (amd64_btop(va) & mask));
+	return (PDmap + ((va >> PDRSHIFT) & mask));
 }
 
 static u_int64_t