hyper-v: introduce Hyper-V support infrastructure.
[qemu.git] / target-i386 / hyperv.h
1 /*
2 * QEMU Hyper-V support
3 *
4 * Copyright Red Hat, Inc. 2011
5 *
6 * Author: Vadim Rozenfeld <vrozenfe@redhat.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
10 *
11 */
12
13 #ifndef QEMU_HW_HYPERV_H
14 #define QEMU_HW_HYPERV_H 1
15
16 #include "qemu-common.h"
17 #include <asm/hyperv.h>
18
19 #ifndef HYPERV_SPINLOCK_NEVER_RETRY
20 #define HYPERV_SPINLOCK_NEVER_RETRY 0xFFFFFFFF
21 #endif
22
23 #ifndef KVM_CPUID_SIGNATURE_NEXT
24 #define KVM_CPUID_SIGNATURE_NEXT 0x40000100
25 #endif
26
27 #ifndef CONFIG_USER_ONLY
28 void hyperv_enable_vapic_recommended(bool val);
29 void hyperv_enable_relaxed_timing(bool val);
30 void hyperv_set_spinlock_retries(int val);
31 #else
32 static inline void hyperv_enable_vapic_recommended(bool val) { }
33 static inline void hyperv_enable_relaxed_timing(bool val) { }
34 static inline void hyperv_set_spinlock_retries(int val) { }
35 #endif
36
37 bool hyperv_enabled(void);
38 bool hyperv_hypercall_available(void);
39 bool hyperv_vapic_recommended(void);
40 bool hyperv_relaxed_timing_enabled(void);
41 int hyperv_get_spinlock_retries(void);
42
43 #endif /* QEMU_HW_HYPERV_H */