svn commit: r252319 - projects/bhyve_npt_pmap/sys/amd64/include

[Neel Natu]

Author: neel
Date: Thu Jun 27 21:34:29 2013
New Revision: 252319
URL: http://svnweb.freebsd.org/changeset/base/252319

Log:
  PG_AVAIL1 is available for software use only in the regular x86 page tables.
  
  PG_AVAIL2 and PG_AVAIL3 on the other hand are available for software use
  in both regular and nested page tables.
  
  Redefine PG_W as PG_AVAIL3 instead of PG_AVAIL1 so we can use the same macro
  regardless of the underlying pmap_type.

Modified:
  projects/bhyve_npt_pmap/sys/amd64/include/pmap.h

Modified: projects/bhyve_npt_pmap/sys/amd64/include/pmap.h
==============================================================================
--- projects/bhyve_npt_pmap/sys/amd64/include/pmap.h	Thu Jun 27 21:02:26 2013	(r252318)
+++ projects/bhyve_npt_pmap/sys/amd64/include/pmap.h	Thu Jun 27 21:34:29 2013	(r252319)
@@ -66,9 +66,13 @@
 #define	PG_PDE_PAT	0x1000	/* PAT	PAT index		*/
 #define	PG_NX		(1ul<<63) /* No-execute */
 
+/*
+ * PG_AVAIL1 is available for software use only with the regular x86 PTEs.
+ * PG_AVAIL2 and PG_AVAIL3 are available in both the regular and nested PTEs.
+ */
 
 /* Our various interpretations of the above */
-#define PG_W		PG_AVAIL1	/* "Wired" pseudoflag */
+#define PG_W		PG_AVAIL3	/* "Wired" pseudoflag */
 #define	PG_MANAGED	PG_AVAIL2
 #define	PG_FRAME	(0x000ffffffffff000ul)
 #define	PG_PS_FRAME	(0x000fffffffe00000ul)