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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svm.h (591B)

      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/*
      3 * SVM helper functions
      4 *
      5 * Copyright 2018 Anshuman Khandual, IBM Corporation.
      6 */
      7
      8#ifndef _ASM_POWERPC_SVM_H
      9#define _ASM_POWERPC_SVM_H
     10
     11#ifdef CONFIG_PPC_SVM
     12
     13#include <asm/reg.h>
     14
     15static inline bool is_secure_guest(void)
     16{
     17	return mfmsr() & MSR_S;
     18}
     19
     20void dtl_cache_ctor(void *addr);
     21#define get_dtl_cache_ctor()	(is_secure_guest() ? dtl_cache_ctor : NULL)
     22
     23#else /* CONFIG_PPC_SVM */
     24
     25static inline bool is_secure_guest(void)
     26{
     27	return false;
     28}
     29
     30#define get_dtl_cache_ctor() NULL
     31
     32#endif /* CONFIG_PPC_SVM */
     33#endif /* _ASM_POWERPC_SVM_H */