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Several computer systems introduced in the 1960s, such as the IBM System/360, DEC PDP-6/PDP-10, the GE-600/Honeywell 6000 series, and the Burroughs B5000 series and B6500 series, support two CPU modes; a mode that grants full privileges to code running in that mode, and a mode that prevents direct access to input/output devices and some other hardware facilities to code running in that mode.
Processor Control Region (PCR) is a Windows kernel mode data structure that contains information about the current processor. It can be accessed via the fs segment register on x86 versions, or the gs segment register on x64 versions respectively.
Nouveau was accepted in version 2.6.33 of the kernel, released on December 10, 2009. Kernel-based mode setting is not only supported by the nouveau driver, it is required. [8] Wayland compositors (e.g. Weston) and kmscon depend on kernel mode setting via ioctl.
Cancelled. Panther was a 32-bit kernel based on Windows NT kernel. [105] [106] Pinball — High Performance File System (HPFS) "Pinball" is the nickname (as opposed to a codename) for HPFS because HPFS driver in Windows NT 3.5 is called PINBALL.SYS. [116] [117] [118] Piton — ReadyDrive: Feature introduced in Windows Vista to support hybrid ...
I/O request packets (IRPs) are kernel mode structures that are used by Windows Driver Model (WDM) and Windows NT device drivers to communicate with each other and with the operating system. They are data structures that describe I/O requests, and can be equally well thought of as "I/O request descriptors" or similar.
User-Mode Driver Framework v2, for writing user-mode drivers with syntactic parity to KMDF WDF also includes a set of static verification tools for use by driver writers. These tools examine driver code for common errors and/or simulate the code of a driver in order to identify problems that are both difficult to detect and difficult to test for.
SoftICE is a kernel mode debugger for DOS and Windows up to Windows XP.It is designed to run underneath Windows, so that the operating system is unaware of its presence. Unlike an application debugger, SoftICE is capable of suspending all operations in Windows when instructed.
The processor executes the SMM code in a separate address space (SMRAM) that has to be made inaccessible to other operating modes of the CPU by the firmware. [7] System Management Mode can address up to 4 GB memory as huge real mode. In x86-64 processors, SMM can address >4 GB memory as real address mode. [8]