--- old/arch/ia64/kernel/ivt.S	2006-03-09 13:38:21.000000000 +0100
+++ new/arch/ia64/kernel/ivt.S	2006-03-09 13:50:48.000000000 +0100
@@ -571,11 +571,18 @@ ENTRY(dirty_bit)
 (p6)	itc.d r25				// install updated PTE
 	;;
 	/*
-	 * Tell the assemblers dependency-violation checker that the above "itc" instructions
-	 * cannot possibly affect the following loads:
+	 * Make sure that the "itc" has been performed before we re-read the PTE.
+	 * (No, we are not going to use the freshly inserted translation for the next "ld".)
+	 * We have to make sure the freshly inserted translation can be hit by an external
+	 * purge request before we initiate the PTE re-fetch.
+	 * A simple ";;" does not make sure that the purges / invalidations go all the way
+	 * down (in case of page size of 64 K, up to 16 DTL0 entries may be purged and all
+	 * the L1D cache lines brought in via these translations need to be invalidated).
+	 */
+	srlz.d
+	/*
+	 * No need for ";;", the following "ld" can be in the same group as "srlz.d" is.
 	 */
-	dv_serialize_data
-
 	ld8 r18=[r17]				// read PTE again
 	;;
 	cmp.eq p6,p7=r18,r25			// is it same as the newly installed