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
  13 static inline bool is_secure_guest(void)
  14 {
  15         return mfmsr() & MSR_S;
  16 }
  17
  18 void dtl_cache_ctor(void *addr);
  19 #define get_dtl_cache_ctor()    (is_secure_guest() ? dtl_cache_ctor : NULL)
  20
  21 #else /* CONFIG_PPC_SVM */
  22
  23 static inline bool is_secure_guest(void)
  24 {
  25         return false;
  26 }
  27
  28 #define get_dtl_cache_ctor() NULL
  29
  30 #endif /* CONFIG_PPC_SVM */
  31 #endif /* _ASM_POWERPC_SVM_H */