projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d94d71cb | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| bbf45ba5 | 2 | /* |
| bbf45ba5 HB |
3 | * |
| 4 | * Copyright IBM Corp. 2008 | |
| 5 | * | |
| 6 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
| 7 | */ | |
| bbf45ba5 HB |
8 | #ifndef __POWERPC_KVM_PARA_H__ |
| 9 | #define __POWERPC_KVM_PARA_H__ | |
| 10 | ||
| c3617f72 | 11 | #include <uapi/asm/kvm_para.h> |
| bbf45ba5 | 12 | |
| 2a342ed5 AG |
13 | #ifdef CONFIG_KVM_GUEST |
| 14 | ||
| 26e673c3 AG |
15 | #include <linux/of.h> |
| 16 | ||
| 2a342ed5 AG |
17 | static inline int kvm_para_available(void) |
| 18 | { | |
| 19 | struct device_node *hyper_node; | |
| 20 | ||
| 21 | hyper_node = of_find_node_by_path("/hypervisor"); | |
| 22 | if (!hyper_node) | |
| 23 | return 0; | |
| 24 | ||
| 25 | if (!of_device_is_compatible(hyper_node, "linux,kvm")) | |
| 26 | return 0; | |
| 27 | ||
| 28 | return 1; | |
| 29 | } | |
| 30 | ||
| 2a342ed5 AG |
31 | #else |
| 32 | ||
| bbf45ba5 HB |
33 | static inline int kvm_para_available(void) |
| 34 | { | |
| 35 | return 0; | |
| 36 | } | |
| 37 | ||
| 2a342ed5 AG |
38 | #endif |
| 39 | ||
| bbf45ba5 HB |
40 | static inline unsigned int kvm_arch_para_features(void) |
| 41 | { | |
| 2a342ed5 AG |
42 | unsigned long r; |
| 43 | ||
| 44 | if (!kvm_para_available()) | |
| 45 | return 0; | |
| 46 | ||
| b1f0d94c | 47 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) |
| 2a342ed5 AG |
48 | return 0; |
| 49 | ||
| 50 | return r; | |
| bbf45ba5 HB |
51 | } |
| 52 | ||
| a4429e53 WL |
53 | static inline unsigned int kvm_arch_para_hints(void) |
| 54 | { | |
| 55 | return 0; | |
| 56 | } | |
| 57 | ||
| 3b5d56b9 EM |
58 | static inline bool kvm_check_and_clear_guest_paused(void) |
| 59 | { | |
| 60 | return false; | |
| 61 | } | |
| 62 | ||
| bbf45ba5 | 63 | #endif /* __POWERPC_KVM_PARA_H__ */ |