arch/powerpc/include/asm/kvm_book3s_uvmem.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_KVM_BOOK3S_UVMEM_H__
   3 #define __ASM_KVM_BOOK3S_UVMEM_H__
   4
   5 #ifdef CONFIG_PPC_UV
   6 int kvmppc_uvmem_init(void);
   7 void kvmppc_uvmem_free(void);
   8 int kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot);
   9 void kvmppc_uvmem_slot_free(struct kvm *kvm,
  10                             const struct kvm_memory_slot *slot);
  11 unsigned long kvmppc_h_svm_page_in(struct kvm *kvm,
  12                                    unsigned long gra,
  13                                    unsigned long flags,
  14                                    unsigned long page_shift);
  15 unsigned long kvmppc_h_svm_page_out(struct kvm *kvm,
  16                                     unsigned long gra,
  17                                     unsigned long flags,
  18                                     unsigned long page_shift);
  19 unsigned long kvmppc_h_svm_init_start(struct kvm *kvm);
  20 unsigned long kvmppc_h_svm_init_done(struct kvm *kvm);
  21 int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn);
  22 unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm);
  23 void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
  24                              struct kvm *kvm, bool skip_page_out);
  25 #else
  26 static inline int kvmppc_uvmem_init(void)
  27 {
  28         return 0;
  29 }
  30
  31 static inline void kvmppc_uvmem_free(void) { }
  32
  33 static inline int
  34 kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot)
  35 {
  36         return 0;
  37 }
  38
  39 static inline void
  40 kvmppc_uvmem_slot_free(struct kvm *kvm, const struct kvm_memory_slot *slot) { }
  41
  42 static inline unsigned long
  43 kvmppc_h_svm_page_in(struct kvm *kvm, unsigned long gra,
  44                      unsigned long flags, unsigned long page_shift)
  45 {
  46         return H_UNSUPPORTED;
  47 }
  48
  49 static inline unsigned long
  50 kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gra,
  51                       unsigned long flags, unsigned long page_shift)
  52 {
  53         return H_UNSUPPORTED;
  54 }
  55
  56 static inline unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
  57 {
  58         return H_UNSUPPORTED;
  59 }
  60
  61 static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm)
  62 {
  63         return H_UNSUPPORTED;
  64 }
  65
  66 static inline unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm)
  67 {
  68         return H_UNSUPPORTED;
  69 }
  70
  71 static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn)
  72 {
  73         return -EFAULT;
  74 }
  75
  76 static inline void
  77 kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
  78                         struct kvm *kvm, bool skip_page_out) { }
  79 #endif /* CONFIG_PPC_UV */
  80 #endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */