Abstract: Mechanisms are provided for implementing intelligent input/output (I/O) operation completion modes in a high-speed network. An application thread executing on a central processing unit in the data processing system, receives a first indication to enter a mode of operation. The application thread enters the mode of operation, arms an arm file descriptor, and processes further completions that enter the completion queue until a second indication is received indicating that the mode is to be exited. Responsive to receiving the second indication to exit the mode, the application thread exits the mode of operation and disarms the arm file descriptor.

Abstract: A computer program product, system, and method are provided for upgrading a kernel or kernel module with a configured persistent memory. A persistent memory space is configured in the memory to store application data from applications in user mode. A kernel executing in the memory is prevented from accessing the persistent memory space. A service is called to load an updated kernel in the memory to replace the kernel, wherein the applications have access to the persistent memory space after the updated kernel is loaded. The service may comprise a kernel execution mechanism that directly loads the updated kernel into the memory without a full reboot of the computer system. An extended memory kernel service may be loaded during a boot operation to reserve the persistent memory space as an extended memory space for use by the applications and prevent the kernel from accessing the persistent memory space.

Abstract: Mechanisms are provided for implementing intelligent input/output (I/O) operation completion modes in a high-speed network. An application thread executing on a central processing unit in the data processing system, receives a first indication to enter a mode of operation. The application thread enters the mode of operation, arms an arm file descriptor, and processes further completions that enter the completion queue until a second indication is received indicating that the mode is to be exited. Responsive to receiving the second indication to exit the mode, the application thread exits the mode of operation and disarms the arm tile descriptor.

Abstract: A computer program product, system, and method are provided for upgrading a kernel or kernel module with a configured persistent. A persistent memory space is configured in the memory to store application data from applications in user mode. A kernel executing in the memory is prevented from accessing the persistent memory space. A service is called to load an updated kernel in the memory to replace the kernel, wherein the applications have access to the persistent memory space after the updated kernel is loaded. The service may comprise a kernel execution mechanism that directly loads the updated kernel into the memory without a full reboot of the computer system. An extended memory kernel service may be loaded during a boot operation to reserve the persistent memory space as an extended memory space for use by the applications and prevent the kernel from accessing the persistent memory space.

Abstract: A computer program product, system, and method are provided for upgrading a kernel or kernel module with a configured persistent. A persistent memory memory space is configured in the memory to store application data from applications in user mode. A kernel executing in the memory is prevented from accessing the persistent memory space. A service is called to load an updated kernel in the memory to replace the kernel, wherein the applications have access to the persistent memory space after the updated kernel is loaded. The service may comprise a kernel execution mechanism that directly loads the updated kernel into the memory without a full reboot of the computer system. An extended memory kernel service may be loaded during a boot operation to reserve the persistent memory space as an extended memory space for use by the applications and prevent the kernel from accessing the persistent memory space.

Abstract: Provided are a computer program product, system, and method for upgrading a kernel or kernel module with a configured persistent memory unused by the kernel. A persistent memory space is configured in the memory to store application data from applications in user mode. A kernel executing in the memory is prevented from accessing the persistent memory space. A service is called to load an updated kernel in the memory to replace the kernel, wherein the applications have access to the persistent memory space after the updated kernel is loaded.