cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

processor.h (492B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) 2020 ARM Ltd.
      4 */
      5#ifndef __ASM_VDSO_PROCESSOR_H
      6#define __ASM_VDSO_PROCESSOR_H
      7
      8#ifndef __ASSEMBLY__
      9
     10#if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
     11#define cpu_relax()						\
     12	do {							\
     13		smp_mb();					\
     14		__asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");	\
     15	} while (0)
     16#else
     17#define cpu_relax()			barrier()
     18#endif
     19
     20#endif /* __ASSEMBLY__ */
     21
     22#endif /* __ASM_VDSO_PROCESSOR_H */