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AssigneeInternational Business Machines Corporation
InventorsPeter A. Franaszek, Daniel E. Poff
Estimating the term…
Disclosed is a method of managing memory to prevent an operating system from writing into user memory space, the method comprising providing a translation look-aside buffer (TLB) for storing TLB entries, each said TLB entry comprising a virtual address of a page in system memory space, a real address of said page, a flag entry for storing a value F indicating whether said page is a user page in said user memory space, providing a space recovery mode register comprising a mode entry for storing a value E indicating whether the system is in a normal mode or in a space recovery mode, said value of E set to said space recovery mode when available free user space fall below a predetermined threshold value, and for each said TLB entry, designating said page in system memory space as read-only when F=0 and E=0. An alternative embodiment is also disclosed wherein no modifications to memory structures are required.
A method of managing memory to prevent an operating system from writing into user memory space, the method comprising:
A method of managing memory to prevent an operating system from writing into user memory space, the method comprising:
A program storage device readable by machine, tangible embodying a program if instructions executable by the machine to perform method steps for managing memory to prevent an operating system from writing into user memory space, said method steps comprising:
A program storage device readable by machine, tangibly embodying a program if instructions executable by the machine to perform method steps for managing memory to prevent an operating system from writing into user memory space, said method steps comprising:
A method of managing memory to enable a change of read/write status of a selected set of pages in a computer system, the method comprising:
Dependencies are inferred from the claim text.