cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cpufeature.h (998B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * CPU feature definitions for module loading, used by
      4 * module_cpu_feature_match(), see asm/cputable.h for powerpc CPU features.
      5 *
      6 * Copyright 2016 Alastair D'Silva, IBM Corporation.
      7 */
      8
      9#ifndef __ASM_POWERPC_CPUFEATURE_H
     10#define __ASM_POWERPC_CPUFEATURE_H
     11
     12#include <asm/cputable.h>
     13
     14/* Keep these in step with powerpc/include/asm/cputable.h */
     15#define MAX_CPU_FEATURES (2 * 32)
     16
     17/*
     18 * Currently we don't have a need for any of the feature bits defined in
     19 * cpu_user_features. When we do, they should be defined such as:
     20 *
     21 * #define PPC_MODULE_FEATURE_32 (ilog2(PPC_FEATURE_32))
     22 */
     23
     24#define PPC_MODULE_FEATURE_VEC_CRYPTO			(32 + ilog2(PPC_FEATURE2_VEC_CRYPTO))
     25
     26#define cpu_feature(x)		(x)
     27
     28static inline bool cpu_have_feature(unsigned int num)
     29{
     30	if (num < 32)
     31		return !!(cur_cpu_spec->cpu_user_features & 1UL << num);
     32	else
     33		return !!(cur_cpu_spec->cpu_user_features2 & 1UL << (num - 32));
     34}
     35
     36#endif /* __ASM_POWERPC_CPUFEATURE_H */