Author: grehan
Date: Sat Jan 25 06:58:41 2014
New Revision: 261148
URL: http://svnweb.freebsd.org/changeset/base/261148
Log:
Change RWX to XWR in comments to match intent and bit patterns
in discussion of valid EPT pte protections.
Discussed with: neel
MFC after: 3 days
Modified:
head/sys/amd64/amd64/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Sat Jan 25 06:54:04 2014 (r261147)
+++ head/sys/amd64/amd64/pmap.c Sat Jan 25 06:58:41 2014 (r261148)
@@ -5575,7 +5575,7 @@ safe_to_clear_referenced(pmap_t pmap, pt
KASSERT(pmap->pm_type == PT_EPT, ("invalid pm_type %d", pmap->pm_type));
/*
- * RWX = 010 or 110 will cause an unconditional EPT misconfiguration
+ * XWR = 010 or 110 will cause an unconditional EPT misconfiguration
* so we don't let the referenced (aka EPT_PG_READ) bit to be cleared
* if the EPT_PG_WRITE bit is set.
*/
@@ -5583,7 +5583,7 @@ safe_to_clear_referenced(pmap_t pmap, pt
return (FALSE);
/*
- * RWX = 100 is allowed only if the PMAP_SUPPORTS_EXEC_ONLY is set.
+ * XWR = 100 is allowed only if the PMAP_SUPPORTS_EXEC_ONLY is set.
*/
if ((pte & EPT_PG_EXECUTE) == 0 ||
((pmap->pm_flags & PMAP_SUPPORTS_EXEC_ONLY) != 0))
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