arch/x86/kvm/mmu.h

   1 #ifndef __KVM_X86_MMU_H
   2 #define __KVM_X86_MMU_H
   3
   4 #include <linux/kvm_host.h>
   5
   6 #ifdef CONFIG_X86_64
   7 #define TDP_ROOT_LEVEL PT64_ROOT_LEVEL
   8 #else
   9 #define TDP_ROOT_LEVEL PT32E_ROOT_LEVEL
  10 #endif
  11
  12 static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
  13 {
  14         if (unlikely(vcpu->kvm->arch.n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
  15                 __kvm_mmu_free_some_pages(vcpu);
  16 }
  17
  18 static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
  19 {
  20         if (likely(vcpu->arch.mmu.root_hpa != INVALID_PAGE))
  21                 return 0;
  22
  23         return kvm_mmu_load(vcpu);
  24 }
  25
  26 static inline int is_long_mode(struct kvm_vcpu *vcpu)
  27 {
  28 #ifdef CONFIG_X86_64
  29         return vcpu->arch.shadow_efer & EFER_LME;
  30 #else
  31         return 0;
  32 #endif
  33 }
  34
  35 static inline int is_pae(struct kvm_vcpu *vcpu)
  36 {
  37         return vcpu->arch.cr4 & X86_CR4_PAE;
  38 }
  39
  40 static inline int is_pse(struct kvm_vcpu *vcpu)
  41 {
  42         return vcpu->arch.cr4 & X86_CR4_PSE;
  43 }
  44
  45 static inline int is_paging(struct kvm_vcpu *vcpu)
  46 {
  47         return vcpu->arch.cr0 & X86_CR0_PG;
  48 }
  49
  50 #endif