162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci *
462306a36Sopenharmony_ci * Copyright IBM Corp. 2008
562306a36Sopenharmony_ci *
662306a36Sopenharmony_ci * Authors: Hollis Blanchard <hollisb@us.ibm.com>
762306a36Sopenharmony_ci */
862306a36Sopenharmony_ci#ifndef __POWERPC_KVM_PARA_H__
962306a36Sopenharmony_ci#define __POWERPC_KVM_PARA_H__
1062306a36Sopenharmony_ci
1162306a36Sopenharmony_ci#include <asm/kvm_guest.h>
1262306a36Sopenharmony_ci
1362306a36Sopenharmony_ci#include <uapi/asm/kvm_para.h>
1462306a36Sopenharmony_ci
1562306a36Sopenharmony_cistatic inline int kvm_para_available(void)
1662306a36Sopenharmony_ci{
1762306a36Sopenharmony_ci	return IS_ENABLED(CONFIG_KVM_GUEST) && is_kvm_guest();
1862306a36Sopenharmony_ci}
1962306a36Sopenharmony_ci
2062306a36Sopenharmony_cistatic inline unsigned int kvm_arch_para_features(void)
2162306a36Sopenharmony_ci{
2262306a36Sopenharmony_ci	unsigned long r;
2362306a36Sopenharmony_ci
2462306a36Sopenharmony_ci	if (!kvm_para_available())
2562306a36Sopenharmony_ci		return 0;
2662306a36Sopenharmony_ci
2762306a36Sopenharmony_ci	if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r))
2862306a36Sopenharmony_ci		return 0;
2962306a36Sopenharmony_ci
3062306a36Sopenharmony_ci	return r;
3162306a36Sopenharmony_ci}
3262306a36Sopenharmony_ci
3362306a36Sopenharmony_cistatic inline unsigned int kvm_arch_para_hints(void)
3462306a36Sopenharmony_ci{
3562306a36Sopenharmony_ci	return 0;
3662306a36Sopenharmony_ci}
3762306a36Sopenharmony_ci
3862306a36Sopenharmony_cistatic inline bool kvm_check_and_clear_guest_paused(void)
3962306a36Sopenharmony_ci{
4062306a36Sopenharmony_ci	return false;
4162306a36Sopenharmony_ci}
4262306a36Sopenharmony_ci
4362306a36Sopenharmony_ci#endif /* __POWERPC_KVM_PARA_H__ */
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