On 2018-12-22 04:41, Jarkko Sakkinen wrote:> diff --git 
a/arch/x86/include/uapi/asm/sgx.h b/arch/x86/include/uapi/asm/sgx.h
> new file mode 100644
> index 000000000000..aadf9c76e360
> --- /dev/null
> +++ b/arch/x86/include/uapi/asm/sgx.h
> @@ -0,0 +1,59 @@
> +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
> +/**
> + * Copyright(c) 2016-18 Intel Corporation.
> + */
> +#ifndef _UAPI_ASM_X86_SGX_H
> +#define _UAPI_ASM_X86_SGX_H
> +
> +#include <linux/types.h>
> +#include <linux/ioctl.h>
> +
> +#define SGX_MAGIC 0xA4
> +
> +#define SGX_IOC_ENCLAVE_CREATE \
> +	_IOW(SGX_MAGIC, 0x00, struct sgx_enclave_create)
> +#define SGX_IOC_ENCLAVE_ADD_PAGE \
> +	_IOW(SGX_MAGIC, 0x01, struct sgx_enclave_add_page)
> +#define SGX_IOC_ENCLAVE_INIT \
> +	_IOW(SGX_MAGIC, 0x02, struct sgx_enclave_init)
> +
> +/* IOCTL return values */
> +#define SGX_POWER_LOST_ENCLAVE		0x40000000
> +
> +/**
> + * struct sgx_enclave_create - parameter structure for the
> + *                             %SGX_IOC_ENCLAVE_CREATE ioctl
> + * @src:	address for the SECS page data
> + */
> +struct sgx_enclave_create  {
> +	__u64	src;
> +};

Documentation should specify which SECS fields should be passed by the 
user and which fields will be filled in by the kernel.

--
Jethro Beekman | Fortanix