| /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
| /* | |
| * Hypervisor Maintenance Interrupt header file. | |
| * | |
| * Copyright 2015 IBM Corporation | |
| * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | |
| */ | |
| #ifndef __ASM_PPC64_HMI_H__ | |
| #define __ASM_PPC64_HMI_H__ | |
| #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE | |
| #define CORE_TB_RESYNC_REQ_BIT 63 | |
| #define MAX_SUBCORE_PER_CORE 4 | |
| /* | |
| * sibling_subcore_state structure is used to co-ordinate all threads | |
| * during HMI to avoid TB corruption. This structure is allocated once | |
| * per each core and shared by all threads on that core. | |
| */ | |
| struct sibling_subcore_state { | |
| unsigned long flags; | |
| u8 in_guest[MAX_SUBCORE_PER_CORE]; | |
| }; | |
| extern void wait_for_subcore_guest_exit(void); | |
| extern void wait_for_tb_resync(void); | |
| #else | |
| static inline void wait_for_subcore_guest_exit(void) { } | |
| static inline void wait_for_tb_resync(void) { } | |
| #endif | |
| struct pt_regs; | |
| extern long hmi_handle_debugtrig(struct pt_regs *regs); | |
| #endif /* __ASM_PPC64_HMI_H__ */ |