| Mahesh Salgaonkar | fd7bacb | 2016-05-15 09:44:26 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Hypervisor Maintenance Interrupt header file. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program. |
| 16 | * |
| 17 | * Copyright 2015 IBM Corporation |
| 18 | * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> |
| 19 | */ |
| 20 | |
| 21 | #ifndef __ASM_PPC64_HMI_H__ |
| 22 | #define __ASM_PPC64_HMI_H__ |
| 23 | |
| Paolo Bonzini | 7c37952 | 2016-08-11 15:07:43 +0200 | [diff] [blame] | 24 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
| Mahesh Salgaonkar | fd7bacb | 2016-05-15 09:44:26 +0530 | [diff] [blame] | 25 | |
| 26 | #define CORE_TB_RESYNC_REQ_BIT 63 |
| 27 | #define MAX_SUBCORE_PER_CORE 4 |
| 28 | |
| 29 | /* |
| 30 | * sibling_subcore_state structure is used to co-ordinate all threads |
| 31 | * during HMI to avoid TB corruption. This structure is allocated once |
| 32 | * per each core and shared by all threads on that core. |
| 33 | */ |
| 34 | struct sibling_subcore_state { |
| 35 | unsigned long flags; |
| 36 | u8 in_guest[MAX_SUBCORE_PER_CORE]; |
| 37 | }; |
| 38 | |
| 39 | extern void wait_for_subcore_guest_exit(void); |
| 40 | extern void wait_for_tb_resync(void); |
| 41 | #else |
| 42 | static inline void wait_for_subcore_guest_exit(void) { } |
| 43 | static inline void wait_for_tb_resync(void) { } |
| 44 | #endif |
| 45 | #endif /* __ASM_PPC64_HMI_H__ */ |