| 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); |
| 27 |