46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
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/*
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* Hypervisor Maintenance Interrupt header file.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program.
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*
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* Copyright 2015 IBM Corporation
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* Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
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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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#endif /* __ASM_PPC64_HMI_H__ */
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