A Short Note on Implementing "New" Machine Instructions by Software for Efficient Test of Page Accessibility


Checking a page's accessibility (not mapped, read only or read/write) is sometimes useful for operating system kernels. We describe a technique for extending a processor's instruction set (by software) so that accessibility tests can in most cases be done faster than parsing the page table tree by software. 
DOI: 10.1145/164853.164869


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