FIX_N_COLOURS
FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * 2),
idx = (addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1);
idx += in_interrupt() ? FIX_N_COLOURS : 0;
FIX_CMAP_END = FIX_CMAP_BEGIN + (FIX_N_COLOURS * NR_CPUS) - 1,
(((addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1)) +
(FIX_N_COLOURS * smp_processor_id()));