[SPARC64]: Fix two bugs wrt. kernel 4MB TSB.

1) The TSB lookup was not using the correct hash mask.

2) It was not aligned on a boundary equal to it's size,
   which is required by the sun4v Hypervisor.

wasn't having it's return value checked, and that bug will be fixed up
as well in a subsequent changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/tsb.h b/include/asm-sparc64/tsb.h
index ab55ffc..76e4299 100644
--- a/include/asm-sparc64/tsb.h
+++ b/include/asm-sparc64/tsb.h
@@ -271,7 +271,7 @@
 #define KERN_TSB4M_LOOKUP_TL1(TAG, REG1, REG2, REG3, REG4, OK_LABEL) \
 	sethi		%hi(swapper_4m_tsb), REG1; \
 	or		REG1, %lo(swapper_4m_tsb), REG1; \
-	and		TAG, (KERNEL_TSB_NENTRIES - 1), REG2; \
+	and		TAG, (KERNEL_TSB4M_NENTRIES - 1), REG2; \
 	sllx		REG2, 4, REG2; \
 	add		REG1, REG2, REG2; \
 	KTSB_LOAD_QUAD(REG2, REG3); \