arch/powerpc/platforms/pseries/cc_platform.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Confidential Computing Platform Capability checks
   4  *
   5  * Copyright (C) 2021 Advanced Micro Devices, Inc.
   6  *
   7  * Author: Tom Lendacky <thomas.lendacky@amd.com>
   8  */
   9
  10 #include <linux/export.h>
  11 #include <linux/cc_platform.h>
  12
  13 #include <asm/machdep.h>
  14 #include <asm/svm.h>
  15
  16 bool cc_platform_has(enum cc_attr attr)
  17 {
  18         switch (attr) {
  19         case CC_ATTR_MEM_ENCRYPT:
  20                 return is_secure_guest();
  21
  22         default:
  23                 return false;
  24         }
  25 }
  26 EXPORT_SYMBOL_GPL(cc_platform_has);