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/*

 * QEMU Hyper-V support

 *

 * Copyright Red Hat, Inc. 2011

 *

 * Author: Vadim Rozenfeld     <vrozenfe@redhat.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2 or later.

 * See the COPYING file in the top-level directory.

 *

 */

#ifndef QEMU_HW_HYPERV_H

#define QEMU_HW_HYPERV_H 1

#include "qemu-common.h"

#ifdef CONFIG_KVM

#include <asm/hyperv.h>

#endif

#ifndef HYPERV_SPINLOCK_NEVER_RETRY

#define HYPERV_SPINLOCK_NEVER_RETRY             0xFFFFFFFF

#endif

#ifndef KVM_CPUID_SIGNATURE_NEXT

#define KVM_CPUID_SIGNATURE_NEXT                0x40000100

#endif

#if !defined(CONFIG_USER_ONLY) && defined(CONFIG_KVM)

void hyperv_enable_vapic_recommended(bool val);

void hyperv_enable_relaxed_timing(bool val);

void hyperv_set_spinlock_retries(int val);

#else

static inline void hyperv_enable_vapic_recommended(bool val) { }

static inline void hyperv_enable_relaxed_timing(bool val) { }

static inline void hyperv_set_spinlock_retries(int val) { }

#endif

bool hyperv_enabled(void);

bool hyperv_hypercall_available(void);

bool hyperv_vapic_recommended(void);

bool hyperv_relaxed_timing_enabled(void);

int hyperv_get_spinlock_retries(void);

#endif /* QEMU_HW_HYPERV_H */