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 */