On Mon, Mar 18, 2013 at 05:03:49PM +0000, Stephen Boyd wrote: > On 03/17/13 07:28, Will Deacon wrote: > > On Wed, Mar 13, 2013 at 01:32:01AM +0000, Stephen Boyd wrote: > >> Some early versions of the Krait CPU design incorrectly indicate > >> that they only support the UDIV and SDIV instructions in Thumb > >> mode when they actually support them in ARM and Thumb mode. It > >> seems that these CPUs follow the DDI0406B ARM ARM which has two > >> possible values for the divide instructions field, instead of the > >> DDI0406C document which has three possible values. > >> > >> Work around this problem by checking the MIDR against Krait CPUs > >> with this faulty ISAR0 register and force the detection code > >> to indicate support in both modes. > >> > >> Cc: Will Deacon <[email protected]> > >> Cc: Stepan Moskovchenko <[email protected]> > >> Signed-off-by: Stephen Boyd <[email protected]> > >> --- > >> arch/arm/kernel/setup.c | 8 ++++++++ > >> 1 file changed, 8 insertions(+) > > After all this, you might as well just pass the relevant HWCAPs for your > > krait entry in proc-v7.S rather than have an exception in the CPU-agnostic > > code. > > Ok. Care to ack the previous patch I sent then?
Gah, I can't find the original one. If you resend the series with the changes I suggested in the other mail, I'll add the necessary acks there. Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
