projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| bbf45ba5 HB |
1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify | |
| 3 | * it under the terms of the GNU General Public License, version 2, as | |
| 4 | * published by the Free Software Foundation. | |
| 5 | * | |
| 6 | * This program is distributed in the hope that it will be useful, | |
| 7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 9 | * GNU General Public License for more details. | |
| 10 | * | |
| 11 | * You should have received a copy of the GNU General Public License | |
| 12 | * along with this program; if not, write to the Free Software | |
| 13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 14 | * | |
| 15 | * Copyright IBM Corp. 2008 | |
| 16 | * | |
| 17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
| 18 | */ | |
| bbf45ba5 HB |
19 | #ifndef __POWERPC_KVM_PARA_H__ |
| 20 | #define __POWERPC_KVM_PARA_H__ | |
| 21 | ||
| c3617f72 | 22 | #include <uapi/asm/kvm_para.h> |
| bbf45ba5 | 23 | |
| 2a342ed5 AG |
24 | #ifdef CONFIG_KVM_GUEST |
| 25 | ||
| 26e673c3 AG |
26 | #include <linux/of.h> |
| 27 | ||
| 2a342ed5 AG |
28 | static inline int kvm_para_available(void) |
| 29 | { | |
| 30 | struct device_node *hyper_node; | |
| 31 | ||
| 32 | hyper_node = of_find_node_by_path("/hypervisor"); | |
| 33 | if (!hyper_node) | |
| 34 | return 0; | |
| 35 | ||
| 36 | if (!of_device_is_compatible(hyper_node, "linux,kvm")) | |
| 37 | return 0; | |
| 38 | ||
| 39 | return 1; | |
| 40 | } | |
| 41 | ||
| 2a342ed5 AG |
42 | #else |
| 43 | ||
| bbf45ba5 HB |
44 | static inline int kvm_para_available(void) |
| 45 | { | |
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 2a342ed5 AG |
49 | #endif |
| 50 | ||
| bbf45ba5 HB |
51 | static inline unsigned int kvm_arch_para_features(void) |
| 52 | { | |
| 2a342ed5 AG |
53 | unsigned long r; |
| 54 | ||
| 55 | if (!kvm_para_available()) | |
| 56 | return 0; | |
| 57 | ||
| b1f0d94c | 58 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) |
| 2a342ed5 AG |
59 | return 0; |
| 60 | ||
| 61 | return r; | |
| bbf45ba5 HB |
62 | } |
| 63 | ||
| 3b5d56b9 EM |
64 | static inline bool kvm_check_and_clear_guest_paused(void) |
| 65 | { | |
| 66 | return false; | |
| 67 | } | |
| 68 | ||
| bbf45ba5 | 69 | #endif /* __POWERPC_KVM_PARA_H__ */ |