Waiman Long wrote:
> I would like to report that I also have the same boot problem on a 
> RHEL6.4 box with the crypto patch. My workaround is to force kernel 
> build to have the crc_t10dif code built-in by changing the config file:
> 
> 4889c4889
> < CONFIG_CRYPTO_CRCT10DIF=m
> ---
>  > CONFIG_CRYPTO_CRCT10DIF=y
> 5002c5002
> < CONFIG_CRC_T10DIF=m
> ---
>  > CONFIG_CRC_T10DIF=y
> 
> This solved the boot problem without any additional patch.  Do you think 
> you should consider changing the configuration default to "y" instead of 
> "m" or doesn't allow the "m" option at all?

That was proposed but not accepted.
https://lkml.org/lkml/2013/7/17/543

You should choose CONFIG_CRYPTO_CRCT10DIF_PCLMUL=y in your kernel config
if your CPU supports PCLMULQDQ.
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