Index: kernel/arch/sparc64/src/mm/cache_asm.S
===================================================================
--- kernel/arch/sparc64/src/mm/cache_asm.S	(revision df4ed852a2d1b242f9bdce0a873009a2cb77cec7)
+++ kernel/arch/sparc64/src/mm/cache_asm.S	(revision 9f63a83a9944f73d20a34872d07428dd2604da42)
@@ -29,7 +29,13 @@
 #include <arch/arch.h>
 
-#define DCACHE_SIZE		(16*1024)
+#define DCACHE_SIZE		(16 * 1024)
 #define DCACHE_LINE_SIZE	32	
 
+#define DCACHE_TAG_SHIFT	2
+
+.register %g2, #scratch
+.register %g3, #scratch
+
+/** Flush the whole D-cache. */
 .global dcache_flush
 dcache_flush:
@@ -43,2 +49,43 @@
 	membar #Sync
 
+/** Flush only D-cache lines of one virtual color.
+ *
+ * @param o0	Virtual color to be flushed.
+ */
+.global dcache_flush_color
+dcache_flush_color:
+	mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1
+	set DCACHE_SIZE / 2, %g2
+	sllx %g2, %o0, %g2
+	sub %g2, DCACHE_LINE_SIZE, %g2
+0:	stxa %g0, [%g2] ASI_DCACHE_TAG
+	membar #Sync
+	subcc %g1, 1, %g1
+	bnz,pt %xcc, 0b
+	sub %g2, DCACHE_LINE_SIZE, %g2
+	retl
+	nop
+
+/** Flush only D-cache lines of one virtual color and one tag.
+ *
+ * @param o0	Virtual color to lookup the tag.
+ * @param o1	Tag of the cachelines to be flushed.
+ */
+.global dcache_flush_tag
+dcache_flush_tag:
+	mov (DCACHE_SIZE / DCACHE_LINE_SIZE) / 2, %g1
+	set DCACHE_SIZE / 2, %g2
+	sllx %g2, %o0, %g2
+	sub %g2, DCACHE_LINE_SIZE, %g2
+0:	ldxa [%g2] ASI_DCACHE_TAG, %g3
+	srlx %g3, DCACHE_TAG_SHIFT, %g3
+	cmp %g3, %o1
+	bnz 1f
+	nop
+	stxa %g0, [%g2] ASI_DCACHE_TAG
+	membar #Sync
+1:	subcc %g1, 1, %g1
+	bnz,pt %xcc, 0b
+	sub %g2, DCACHE_LINE_SIZE, %g2
+	retl
+	nop