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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /*
- * Hypervisor Maintenance Interrupt header file.
- *
- * Copyright 2015 IBM Corporation
- * Author: Mahesh Salgaonkar <[email protected]>
- */
- #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__ */
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