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 <will.deacon@xxxxxxx> >> Cc: Stepan Moskovchenko <stepanm@xxxxxxxxxxxxxx> >> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> >> --- >> 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? -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
