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