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 bool kvmppc_uvmem_available(void);
   9 int kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot);
  10 void kvmppc_uvmem_slot_free(struct kvm *kvm,
  11                             const struct kvm_memory_slot *slot);
  12 unsigned long kvmppc_h_svm_page_in(struct kvm *kvm,
  13                                    unsigned long gra,
  14                                    unsigned long flags,
  15                                    unsigned long page_shift);
  16 unsigned long kvmppc_h_svm_page_out(struct kvm *kvm,
  17                                     unsigned long gra,
  18                                     unsigned long flags,
  19                                     unsigned long page_shift);
  20 unsigned long kvmppc_h_svm_init_start(struct kvm *kvm);
  21 unsigned long kvmppc_h_svm_init_done(struct kvm *kvm);
  22 int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn);
  23 unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm);
  24 void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
  25                              struct kvm *kvm, bool skip_page_out);
  26 int kvmppc_uvmem_memslot_create(struct kvm *kvm,
  27                 const struct kvm_memory_slot *new);
  28 void kvmppc_uvmem_memslot_delete(struct kvm *kvm,
  29                 const struct kvm_memory_slot *old);
  30 #else
  31 static inline int kvmppc_uvmem_init(void)
  32 {
  33         return 0;
  34 }
  35
  36 static inline void kvmppc_uvmem_free(void) { }
  37
  38 static inline bool kvmppc_uvmem_available(void)
  39 {
  40         return false;
  41 }
  42
  43 static inline int
  44 kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot)
  45 {
  46         return 0;
  47 }
  48
  49 static inline void
  50 kvmppc_uvmem_slot_free(struct kvm *kvm, const struct kvm_memory_slot *slot) { }
  51
  52 static inline unsigned long
  53 kvmppc_h_svm_page_in(struct kvm *kvm, unsigned long gra,
  54                      unsigned long flags, unsigned long page_shift)
  55 {
  56         return H_UNSUPPORTED;
  57 }
  58
  59 static inline unsigned long
  60 kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gra,
  61                       unsigned long flags, unsigned long page_shift)
  62 {
  63         return H_UNSUPPORTED;
  64 }
  65
  66 static inline unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
  67 {
  68         return H_UNSUPPORTED;
  69 }
  70
  71 static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm)
  72 {
  73         return H_UNSUPPORTED;
  74 }
  75
  76 static inline unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm)
  77 {
  78         return H_UNSUPPORTED;
  79 }
  80
  81 static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn)
  82 {
  83         return -EFAULT;
  84 }
  85
  86 static inline void
  87 kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
  88                         struct kvm *kvm, bool skip_page_out) { }
  89
  90 static inline int  kvmppc_uvmem_memslot_create(struct kvm *kvm,
  91                 const struct kvm_memory_slot *new)
  92 {
  93         return H_UNSUPPORTED;
  94 }
  95
  96 static inline void  kvmppc_uvmem_memslot_delete(struct kvm *kvm,
  97                 const struct kvm_memory_slot *old) { }
  98
  99 #endif /* CONFIG_PPC_UV */
 100 #endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */