1#ifndef __KVM_X86_MMU_H 2#define __KVM_X86_MMU_H 3 4#include <linux/kvm_host.h> 5 6#define PT64_PT_BITS 9 7#define PT64_ENT_PER_PAGE (1 << PT64_PT_BITS) 8#define PT32_PT_BITS 10 9#define PT32_ENT_PER_PAGE (1 << PT32_PT_BITS) 10 11#define PT_WRITABLE_SHIFT 1 12 13#define PT_PRESENT_MASK (1ULL << 0) 14#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT) 15#define PT_USER_MASK (1ULL << 2) 16#define PT_PWT_MASK (1ULL << 3) 17#define PT_PCD_MASK (1ULL << 4) 18#define PT_ACCESSED_SHIFT 5 19#define PT_ACCESSED_MASK (1ULL << PT_ACCESSED_SHIFT) 20#define PT_DIRTY_MASK (1ULL << 6) 21#define PT_PAGE_SIZE_MASK (1ULL << 7) 22#define PT_PAT_MASK (1ULL << 7) 23#define PT_GLOBAL_MASK (1ULL << 8) 24#define PT64_NX_SHIFT 63 25#define PT64_NX_MASK (1ULL << PT64_NX_SHIFT) 26 27#define PT_PAT_SHIFT 7 28#define PT_DIR_PAT_SHIFT 12 29#define PT_DIR_PAT_MASK (1ULL << PT_DIR_PAT_SHIFT) 30 31#define PT32_DIR_PSE36_SIZE 4 32#define PT32_DIR_PSE36_SHIFT 13 33#define PT32_DIR_PSE36_MASK \ 34 (((1ULL << PT32_DIR_PSE36_SIZE) - 1) << PT32_DIR_PSE36_SHIFT) 35 36#define PT64_ROOT_LEVEL 4 37#define PT32_ROOT_LEVEL 2 38#define PT32E_ROOT_LEVEL 3 39 40int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]); 41 42static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) 43{ 44 if (unlikely(vcpu->kvm->arch.n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) 45 __kvm_mmu_free_some_pages(vcpu); 46} 47 48static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu) 49{ 50 if (likely(vcpu->arch.mmu.root_hpa != INVALID_PAGE)) 51 return 0; 52 53 return kvm_mmu_load(vcpu); 54} 55 56static inline int is_long_mode(struct kvm_vcpu *vcpu) 57{ 58#ifdef CONFIG_X86_64 59 return vcpu->arch.shadow_efer & EFER_LMA; 60#else 61 return 0; 62#endif 63} 64 65static inline int is_pae(struct kvm_vcpu *vcpu) 66{ 67 return vcpu->arch.cr4 & X86_CR4_PAE; 68} 69 70static inline int is_pse(struct kvm_vcpu *vcpu) 71{ 72 return vcpu->arch.cr4 & X86_CR4_PSE; 73} 74 75static inline int is_paging(struct kvm_vcpu *vcpu) 76{ 77 return vcpu->arch.cr0 & X86_CR0_PG; 78} 79 80static inline int is_present_gpte(unsigned long pte) 81{ 82 return pte & PT_PRESENT_MASK; 83} 84 85#endif 86