| /* 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__ */ |
