LXR linux/arch/powerpc/include/asm/svm.h

   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
  13static inline bool is_secure_guest(void)
  14{
  15        return mfmsr() & MSR_S;
  16}
  17
  18void __init svm_swiotlb_init(void);
  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
  30static inline void svm_swiotlb_init(void) {}
  31
  32#define get_dtl_cache_ctor() NULL
  33
  34#endif /* CONFIG_PPC_SVM */
  35#endif /* _ASM_POWERPC_SVM_H */
  36