some questions on new dual 1Gig G4's support?

Benjamin Herrenschmidt benh at
Sun Feb 3 23:04:26 EST 2002

>Thanks!  I see you have hit the big time!  The /. inerview article was
>great!  Now I can say I actually know someone famous!  ;-)
>One last question:
>The 7455 errata basically says to disable the L2 hardware prefetch engine
>(MSSCR0[L2PFE] = 0 when disabling the L1 data cache.
>It goes on to say that the L1 data cache may be disabled during cache
>flushing on some systems or be disabled upon startup.
>Do we disable L1 cache's during cache flushing?  If so were should I be
>looking for this code to get the workaround in place?

I don't think we disable L1 except when changing L2CR value or when
going to sleep.


** Sent via the linuxppc-dev mail list. See

More information about the Linuxppc-dev mailing list