mirror of https://gitee.com/openkylin/linux.git
38 lines
971 B
C
38 lines
971 B
C
/* 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__ */
|