Kernel Mode Linux Kernel Mode Linux project is a technology which enables us to execute user programs in kernel mode.
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Kernel Mode Linux project is a technology which enables us to execute user programs in kernel mode. Kernel Mode Linux project is a technology which enables us to execute user programs in kernel mode. In Kernel Mode Linux, user programs can be executed as user processes that have the privilege level of kernel mode.The benefit of executing user programs in kernel mode is that the user programs can access a kernel address space directly. So, for example, user programs can invoke system calls very fast because it is unnecessary to switch between a kernel mode and a user mode by using costly software interruptions or context switches. Unlike kernel modules, user programs are executed as ordinary processes (except for their privilege level), so scheduling and paging are performed as usual.Although it seems dangerous to let user programs access a kernel directly, safety of the kernel can be ensured, for example, by static type checking, software fault isolation, and so forth. For proof of concept, we are developing a system which is based on the combination of Kernel Mode Linux and Typed Assembly Language, TAL.Limitations:· On IA-32, programs executed in kernel mode shouldn't modify their CS, DS, FS and SS registers.· On AMD64, programs executed in kernel mode shouldn't modify their CS register.What's New in This Release:· This version was merged with the 2.4.35.1 Linux kernel.

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