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