Method for managing I/O buffers in shared storage by structuring buffer table having entries including storage keys for controlling accesses to the buffers

摘要: I/O protection key processes for protecting storage blocks (page frames) in a shared main against unwanted accesses. Independent CP (central processor) may optionally be provided to protect the same Processes are included initializing, and addressing buffers used by programs; each buffer is comprised of contiguous set frames). The keys independently any accesses system. must supported hardware array when only real (or absolute) programs. However, either second array; or alternatively as virtual field page table entry (which translating addresses addresses). separate CPU access functions include all of: write protection, read frames.