platforms/pseries/cc_platform.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Confidential Computing Platform Capability checks
0004  *
0005  * Copyright (C) 2021 Advanced Micro Devices, Inc.
0006  *
0007  * Author: Tom Lendacky <thomas.lendacky@amd.com>
0008  */
0009
0010 #include <linux/export.h>
0011 #include <linux/cc_platform.h>
0012
0013 #include <asm/machdep.h>
0014 #include <asm/svm.h>
0015
0016 bool cc_platform_has(enum cc_attr attr)
0017 {
0018     switch (attr) {
0019     case CC_ATTR_MEM_ENCRYPT:
0020         return is_secure_guest();
0021
0022     default:
0023         return false;
0024     }
0025 }
0026 EXPORT_SYMBOL_GPL(cc_platform_has);