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TCCBOOT, [7] a hack where TCC loads and boots a Linux kernel from source in about 10 seconds. That is to say, it is a "boot loader" that reads Linux kernel source code from disk, writes executable instructions to memory, and begins running it. This did require changes to the Linux build process.
Clang becomes default compiler in FreeBSD 10.x on amd64/i386. [47] 18 February 2013: Clang/LLVM can compile a working modified Android Linux Kernel for Nexus 7. [48] [49] 19 April 2013: Clang is C++11 feature complete. [50] 6 November 2013: Clang is C++14 feature complete. [51] 11 September 2014: Clang 3.5 can rebuild 94.3% of the Debian archive.
NX memory protection has always been available in Ubuntu for any systems that had the hardware to support it and ran the 64-bit kernel or the 32-bit server kernel. The 32-bit PAE desktop kernel (linux-image-generic-pae) in Ubuntu 9.10 and later, also provides the PAE mode needed for hardware with the NX CPU feature.
The Linux from Scratch project, like BitBake, also supports cross-compiling Linux for ARM embedded systems such as the Raspberry Pi and BeagleBone. [ 7 ] [ 8 ] The book Hardened Linux From Scratch (HLFS) focuses on security enhancements such as hardened kernel patches, mandatory access control policies, stack-smashing protection , and address ...
It is a memory protection policy whereby every page in a process's or kernel's address space may be either writable or executable, but not both. Without such protection, a program can write (as data "W") CPU instructions in an area of memory intended for data and then run (as executable "X"; or read-execute "RX") those instructions.
eBPF is a technology that can run programs in a privileged context such as the operating system kernel. [5] It is the successor to the Berkeley Packet Filter (BPF, with the "e" originally meaning "extended") filtering mechanism in Linux and is also used in non-networking parts of the Linux kernel as well.
Longene aims to add all Windows kernel mechanisms, including system calls, Windows Registry, Windows Driver Model, Deferred Procedure Call, and others, into the Linux kernel to form a new kernel. The new kernel will allow both Linux and Windows applications and device drivers to work without virtualization or emulation.
Linux Security Modules (LSM) is a framework allowing the Linux kernel to support, without bias, a variety of computer security models.LSM is licensed under the terms of the GNU General Public License and is a standard part of the Linux kernel since Linux 2.6.