Index: sys/i386/i386/pmap.c
===================================================================
--- sys/i386/i386/pmap.c	(revision 211418)
+++ sys/i386/i386/pmap.c	(working copy)
@@ -518,7 +518,8 @@
 			if (sysenv != NULL) {
 				if (strncmp(sysenv, "MacBook5,1", 10) == 0 ||
 				    strncmp(sysenv, "MacBookPro5,5", 13) == 0 ||
-				    strncmp(sysenv, "Macmini3,1", 10) == 0)
+				    strncmp(sysenv, "Macmini3,1", 10) == 0 ||
+				    strncmp(sysenv, "iMac9,1", 7) == 0)
 					pat_works = 0;
 				freeenv(sysenv);
 			}
Index: sys/amd64/amd64/pmap.c
===================================================================
--- sys/amd64/amd64/pmap.c	(revision 211418)
+++ sys/amd64/amd64/pmap.c	(working copy)
@@ -620,7 +620,8 @@
 		if (sysenv != NULL) {
 			if (strncmp(sysenv, "MacBook5,1", 10) == 0 ||
 			    strncmp(sysenv, "MacBookPro5,5", 13) == 0 ||
-			    strncmp(sysenv, "Macmini3,1", 10) == 0)
+			    strncmp(sysenv, "Macmini3,1", 10) == 0 ||
+			    strncmp(sysenv, "iMac9,1", 7) == 0)
 				pat_works = 0;
 			freeenv(sysenv);
 		}