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cloned from https://gitorious.org/nahanni/
License: Other
This project forked from henning-schild-work/ivshmem-guest-code
cloned from https://gitorious.org/nahanni/
License: Other
This is the code repository for the shared memory device for KVM/Qemu. This GIT repository contains code and scripts that demonstrate how to make use of the shared memory device. I use the name 'Nahanni' to refer to my device and system. It is not that the system is so substantial that it requires its own name, but having a name makes discussion easier. The Device ---------- The device specification is in the file device-spec.txt. If you want to write a device driver for a different OS than Linux, the device spec will describe how the device works. Directories in this repo ------------------------ kernel_module - Linux kernel modules and makefiles to build them against the currently running kernel. There are two kinds of drivers. "Normal" pci drivers and then UIO_PCI drivers. UIO_PCI is a relatively recent driver model that seeks to move as much functionality in to userspace as possible. With UIO_PCI, device registers and memory regions are usually mapped to userspace and accessed directly which has certain advantages. scripts - these aren't shared memory scripts, but are networking scripts when using DNSmasq for networking. Perhaps they don't belong here. startup_files - these are Linux init scripts for different Linux distros namely ubuntu, fedora and SUSE. Init scripts formats can change and so some tweaking may be necessary for newer versions of distros. there is also a UIO_PCI init script which is different than regular device init scripts. tests - test programs for using shared memory device WITHOUT UIO_PCI. These tests rely on mmap to access the shared region and ioctl calls to trigger interrupts in other guests. uio - test programs for the UIO driver that uses the assigned mappings of registers and memory to trigger notifications rather than ioctl calls as in the other 'tests' directory.
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