mirror of https://gitee.com/openkylin/qemu.git
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
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* QEMU Hyper-V support
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*
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* Copyright Red Hat, Inc. 2011
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*
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* Author: Vadim Rozenfeld <vrozenfe@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_HW_HYPERV_H
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#define QEMU_HW_HYPERV_H 1
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#include "qemu-common.h"
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#ifdef CONFIG_KVM
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#include <asm/hyperv.h>
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#endif
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#ifndef HYPERV_SPINLOCK_NEVER_RETRY
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#define HYPERV_SPINLOCK_NEVER_RETRY 0xFFFFFFFF
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#endif
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#ifndef KVM_CPUID_SIGNATURE_NEXT
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#define KVM_CPUID_SIGNATURE_NEXT 0x40000100
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#endif
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#if !defined(CONFIG_USER_ONLY) && defined(CONFIG_KVM)
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void hyperv_enable_vapic_recommended(bool val);
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void hyperv_enable_relaxed_timing(bool val);
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void hyperv_set_spinlock_retries(int val);
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#else
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static inline void hyperv_enable_vapic_recommended(bool val) { }
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static inline void hyperv_enable_relaxed_timing(bool val) { }
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static inline void hyperv_set_spinlock_retries(int val) { }
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#endif
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bool hyperv_enabled(void);
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bool hyperv_hypercall_available(void);
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bool hyperv_vapic_recommended(void);
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bool hyperv_relaxed_timing_enabled(void);
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int hyperv_get_spinlock_retries(void);
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#endif /* QEMU_HW_HYPERV_H */
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