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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processor.h (437B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2#ifndef __ASM_VDSO_PROCESSOR_H
      3#define __ASM_VDSO_PROCESSOR_H
      4
      5#ifndef __ASSEMBLY__
      6
      7#include <asm/barrier.h>
      8
      9static inline void cpu_relax(void)
     10{
     11#ifdef __riscv_muldiv
     12	int dummy;
     13	/* In lieu of a halt instruction, induce a long-latency stall. */
     14	__asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));
     15#endif
     16	barrier();
     17}
     18
     19#endif /* __ASSEMBLY__ */
     20
     21#endif /* __ASM_VDSO_PROCESSOR_H */