Re: [PATCH 3/6] intel_sgx: driver for Intel Secure Guard eXtensions

[Greg KH]

On Mon, Apr 25, 2016 at 08:34:10PM +0300, Jarkko Sakkinen wrote:
> Intel(R) SGX is a set of CPU instructions that can be used by
> applications to set aside private regions of code and data.  The code
> outside the enclave is disallowed to access the memory inside the
> enclave by the CPU access control.
> 
> Intel SGX driver provides a ioctl interface for loading and initializing
> enclaves and a pager in order to support oversubscription.
> 
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> ---
>  arch/x86/include/asm/sgx.h                    |   4 +-
>  drivers/staging/Kconfig                       |   2 +
>  drivers/staging/Makefile                      |   1 +
>  drivers/staging/intel_sgx/Kconfig             |  13 +
>  drivers/staging/intel_sgx/Makefile            |  12 +
>  drivers/staging/intel_sgx/isgx.h              | 238 +++++++
>  drivers/staging/intel_sgx/isgx_compat_ioctl.c | 179 +++++

No "new" kernel code should ever need compat_ioctl support, please just
create your structures to not require this at all, it isn't that
difficult.

thanks,

greg k-h