隔离应用程序的保护机制 *操作系统将映射给每个应用的物理内存页页号告知适配器 *适配器检查应用程序给出的页号是否在合法的页号集合中 Memory CPU Page X Application P Receive next Kernel acket into Page A Page A Valid list for P Xy…L,A| ADAPTOR NETWORK FIGURE In application device channels, the network adaptor is given a set of valid pages (X, Y, L, A, etc. for a given application P. When application P makes a request to receive data into page A, the adaptor must check if A is in the valid list before allowing the receive隔离应用程序的保护机制  操作系统将映射给每个应用的物理内存页页号告知适配器  适配器检查应用程序给出的页号是否在合法的页号集合中