[SPARC64]: do_fptrap needs to load the thread reg into %g6.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/entry.S

@@ -356,6 +356,7 @@ fitos_emul_fini:
 	.globl		do_fptrap
 	.align		32
 do_fptrap:
+	TRAP_LOAD_THREAD_REG(%g6, %g1)
 	stx		%fsr, [%g6 + TI_XFSR]
 do_fptrap_after_fsr:
 	ldub		[%g6 + TI_FPSAVED], %g3