/*************************************************************************/ /*!
@Title          Macro to limit CPU speculative execution in kernel code
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Per-version macros to allow code to seamlessly use older kernel
@License        Dual MIT/GPLv2

The contents of this file are subject to the MIT license as set out below.

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*/ /**************************************************************************/

#ifndef __KERNEL_NOSPEC_H__
#define __KERNEL_NOSPEC_H__

#include <linux/version.h>

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 2) ||			\
	(LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) &&		\
	 LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 18)) ||		\
	(LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) &&		\
	 LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 81)) ||		\
	(LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) &&		\
	 LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 118)))
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/nospec.h>
#else
#define array_index_nospec(index, size) (index)
#endif

/*
 * For Ubuntu kernels, the features available for a given Linux version code
 * may not match those in upstream kernels. This is the case for the
 * availability of the array_index_nospec macro.
 */
#if !defined(array_index_nospec)
#define array_index_nospec(index, size) (index)
#endif

#endif /* __KERNEL_NOSPEC_H__ */