Information processing device including host device and semiconductor memory device having a plurality of address conversion information

A storage device being capable of communicating with a host device, the host device comprising a first semiconductor memory, the storage device comprising:

• a second semiconductor memory being nonvolatile;
• and
• a controller circuit being capable of receiving a request for accessing to a first logical address from the host device, wherein
• the controller circuit is capable of determining based on first information whether second information for performing the request is stored in an area of the first semiconductor memory,
• the area has been reserved by the host device for storing data from the storage device and
• the controller circuit is capable of reading the second information from the area of the first semiconductor memory and accessing the second semiconductor memory using the second information if the controller circuit determines that the second information for performing the request is stored in the area of the first semiconductor memory.

A host device being capable of communicating with a storage device, the storage device comprising a first semiconductor memory, the host device comprising:

• a second semiconductor memory;
• a processor being capable of transmitting a request for accessing to a first logical address;
• and
• a controller circuit being capable of transferring first information for performing the request from an area of the second semiconductor memory to the storage device if the the storage device determines the first information is stored in the area of the second semiconductor memory, wherein
• the area has been reserved for storing data from the storage device.

A memory system comprising:

• a host device;
• and
• a storage device being capable of communicating with the host device, wherein the host device comprises
• a first semiconductor memory,
• a processor being capable of transmitting a request for accessing to a first logical address, and
• a first controller circuit being capable of transferring first information for performing the request from an area of the first semiconductor memory to the storage device in response to a transfer command from the storage device, wherein
• the area has been reserved by the host device for storing data from the storage device,
• the storage device comprises
• a second semiconductor memory being nonvolatile,
• a second controller circuit being capable of receiving the request from the host device, wherein
• the second controller circuit is capable of determining based on second information whether the first information for performing the request is stored in the area of the first semiconductor memory;
• and
• the second controller circuit is capable of receiving the first information from the area of the first semiconductor memory and accessing the second semiconductor memory using the first information if the second controller circuit determines that the first information for performing the request is stored in the area of the first semiconductor memory.