cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kvm_para.h (752B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *
      4 * Copyright IBM Corp. 2008
      5 *
      6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
      7 */
      8#ifndef __POWERPC_KVM_PARA_H__
      9#define __POWERPC_KVM_PARA_H__
     10
     11#include <asm/kvm_guest.h>
     12
     13#include <uapi/asm/kvm_para.h>
     14
     15static inline int kvm_para_available(void)
     16{
     17	return IS_ENABLED(CONFIG_KVM_GUEST) && is_kvm_guest();
     18}
     19
     20static inline unsigned int kvm_arch_para_features(void)
     21{
     22	unsigned long r;
     23
     24	if (!kvm_para_available())
     25		return 0;
     26
     27	if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r))
     28		return 0;
     29
     30	return r;
     31}
     32
     33static inline unsigned int kvm_arch_para_hints(void)
     34{
     35	return 0;
     36}
     37
     38static inline bool kvm_check_and_clear_guest_paused(void)
     39{
     40	return false;
     41}
     42
     43#endif /* __POWERPC_KVM_PARA_H__ */