Since there are now at least two users of cop2 I propose the following: Regards /Mikael Index: unaligned.c =================================================================== RCS file: /usr/local/cvs/linux/os/linux-2.6/arch/mips/kernel/unaligned.c,v retrieving revision 1.12 retrieving revision 1.13 diff -u -r1.12 -r1.13 --- unaligned.c 15 Jun 2009 16:00:57 -0000 1.12 +++ unaligned.c 23 Nov 2009 06:26:04 -0000 1.13 @@ -446,22 +446,15 @@ case ldc1_op: case swc1_op: case sdc1_op: - /* - * I herewith declare: this does not happen. So send SIGBUS. - */ - goto sigbus; - case lwc2_op: case ldc2_op: case swc2_op: case sdc2_op: /* - * These are the coprocessor 2 load/stores. The current - * implementations don't use cp2 and cp2 should always be - * disabled in c0_status. So send SIGILL. - * (No longer true: The Sony Praystation uses cp2 for - * 3D matrix operations. Dunno if that thingy has a MMU ...) + * I herewith declare: this does not happen. So send SIGBUS. */ + goto sigbus; + default: /* * Pheeee... We encountered an yet unknown instruction or