DMA操作前需要分配物理地址连续的一个Buffer,AllocateCommonBuffer函数提供了这个功能,该函数原型如下: PVOID AllocateCommonBuffer( _In_ PDMA_ADAPTER DmaAdapter, _In_ ULONG Length, _Out_ PPHYSICAL_ADDRESS LogicalAddress, _In_ BOOLEAN CacheEnabled ); 第三个参数有点不是很能理解,PPHYSICAL_ADDRESS Logical...
由此个人认为PPHYSICAL_ADDRESS LogicalAddress 这种定义只是微软命名习惯上的差异,这里的LogicalAddress就是物理地址而并非传统意义上的逻辑地址。
第三个参数有点不是很能理解,PPHYSICAL_ADDRESS LogicalAddress,至少从定义的变量名上看,微软似乎在暗示我:逻辑地址和物理地址是相同的这样一个事实。 虚拟地址到物理地址的转化方法是与体系结构相关的。有分段、分页两种方式。x86 cpu下分段分页都是支持的。MMU负责从虚拟地址到物理地址的转化。逻辑地址是段标识+段...
addresslogicalvirtual 系统标签: logicalvirtualphysical地址虚拟segment 物理地址逻辑地址虚拟地址的概念(Physicaladdress,logicaladdress,virtualaddress)I.conceptPhysicaladdress(physical,address)Usedformemorycellleveladdressing,correspondingtotheaddressbusconnectedtotheprocessorandtheCPU.Thisconceptshouldbeoneofthebestunderstand...
Linear Adress,created by adding logical address to the base of segment, CS,DS,ES,SS,FSor GS. When Paging is enabled, the page tables are used to translate linear address to physical address. On the Other Hand, Physical Address is nothing but, the address value that appears on pins of pr...
address associated with each data write operation to a block, where the block has a plurality of pages, (C) writing the physical-to-logical address map to a last of the plurality of pages during a write to a second to last page of the block and (D) initiating a recycle operation of ...
s virtual address space that indexes virtual memory addresses to physical addresses. 用来索引虚拟内存地址到物理地址,他被存放在内核虚拟地址空间中。 old.blog.edu.cn 5. In each case, the new CPUs provide the means to map PCI physical addresses to guest virtual addresses. 不管是哪种情况,新的CPU...
In ___, a table associating a logical address with a physical address is updated manually. A. static mapping B. dynamic mapping C. physical mapping D. none of the above 相关知识点: 试题来源: 解析 static mapping 反馈 收藏
Described embodiments provide logical-to-physical address translation for data stored on a storage device having sectors organized into blocks and superblocks. A flash translation layer maps a physical address in the storage device to a logical sector address. The logical sector address corresponds to ...
a. How is the logical-to-physical address mapping accomplished in this system? (For the indexed allocation, assume that a file is always less than 512 blocks long.) 分配方式 连续 逻辑地址除以512,商+首地址=物理地址,余数是偏移量。 链接 逻辑地址除以512,商+1=物理地址,余数+1是偏移量。 索引...