52     pub guest_phys_addr: u64, // 虚机内存区间起始物理地址
53     pub memory_size: u64,     // 虚机内存区间大小
54     pub userspace_addr: u64,  // 虚机内存区间对应的主机虚拟地址
59     pub base_gfn: u64,       // 虚机内存区间起始物理页框号
60     pub npages: u64,         // 虚机内存区间页数，即内存区间的大小
61     pub userspace_addr: u64, // 虚机内存区间对应的主机虚拟地址
89 fn __gfn_to_memslot(slots: KvmMemorySlots, gfn: u64) -> Option<KvmMemorySlot> {  in __gfn_to_memslot()
101 fn __gfn_to_hva(slot: KvmMemorySlot, gfn: u64) -> u64 {  in __gfn_to_hva()  argument
102     return slot.userspace_addr + (gfn - slot.base_gfn) * (PAGE_SIZE as u64);  in __gfn_to_hva()
106     gfn: u64,  in __gfn_to_hva_many()  argument
107     nr_pages: Option<&mut u64>,  in __gfn_to_hva_many()  argument
109 ) -> Result<u64, SystemError> {  in __gfn_to_hva_many()  argument
143 fn hva_to_pfn(addr: u64, _atomic: bool, _writable: &mut bool) -> Result<u64, SystemError> {  in hva_to_pfn()  argument
154         return Ok(hpa.data() as u64 >> PAGE_SHIFT);  in hva_to_pfn()
160     return Ok(hpa.data() as u64 >> PAGE_SHIFT);  in hva_to_pfn()
165     gfn: u64,  in __gfn_to_pfn()  argument
169 ) -> Result<u64, SystemError> {  in __gfn_to_pfn()  argument
178 pub fn kvm_vcpu_gfn_to_memslot(vcpu: &mut dyn Vcpu, gfn: u64) -> Option<KvmMemorySlot> {  in kvm_vcpu_gfn_to_memslot()