45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
#ifndef __ASM_E2K_KVM_BOOT_SPINLOCK_SLOW_H
|
|
#define __ASM_E2K_KVM_BOOT_SPINLOCK_SLOW_H
|
|
/*
|
|
* This file implements on host the arch-dependent parts of kvm guest
|
|
* boot-time spin_lock()/spin_unlock() slow part
|
|
*
|
|
* Copyright 2020 MCST
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kvm.h>
|
|
|
|
typedef struct boot_spinlock_unlocked {
|
|
struct list_head unlocked_list;
|
|
struct kvm_vcpu *vcpu;
|
|
struct list_head checked_unlocked; /* list of tasks */
|
|
/* which alredy */
|
|
/* checked spin */
|
|
/* was unlocked */
|
|
|
|
void *lock;
|
|
} boot_spinlock_unlocked_t;
|
|
|
|
#define BOOT_SPINLOCK_HASH_BITS 6
|
|
#define BOOT_SPINLOCK_HASH_SHIFT 4 /* [9:4] hash bits */
|
|
#define BOOT_SPINLOCK_HASH_SIZE (1 << SPINLOCK_HASH_BITS)
|
|
#define boot_spinlock_hashfn(lockp) \
|
|
hash_long(((unsigned long)(lockp)) >> \
|
|
BOOT_SPINLOCK_HASH_SHIFT, \
|
|
BOOT_SPINLOCK_HASH_BITS)
|
|
#define BOOT_SPINUNLOCKED_LIST_SIZE 32
|
|
|
|
extern int kvm_boot_spin_lock_slow(struct kvm_vcpu *vcpu, void *lock,
|
|
bool check_unlock);
|
|
extern int kvm_boot_spin_locked_slow(struct kvm_vcpu *vcpu, void *lock);
|
|
extern int kvm_boot_spin_unlock_slow(struct kvm_vcpu *vcpu, void *lock,
|
|
bool add_to_unlock);
|
|
|
|
extern int vcpu_boot_spinlock_init(struct kvm_vcpu *vcpu);
|
|
extern int kvm_boot_spinlock_init(struct kvm *kvm);
|
|
extern void kvm_boot_spinlock_destroy(struct kvm *kvm);
|
|
|
|
#endif /* __ASM_E2K_KVM_BOOT_SPINLOCK_SLOW_H */ |