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Kdump replaced the deprecated Linux Kernel Crash Dumps (LKCD) tool, which also wrote the contents of memory upon a crash. [11] Kdump presents a more efficient, scalable utility than LKCD. [12] kdump functionality, together with kexec, was merged into the Linux kernel mainline in kernel version 2.6.13, which was released on August 29, 2005. [13]
During the final stages of kernel userspace initialization, a panic is typically triggered if the spawning of init fails. A panic might also be triggered if the init process terminates, as the system would then be unusable. [11] The following is an implementation of the Linux kernel final initialization in kernel_init(): [12]
The kerneloops software can collect and submit kernel oopses to a repository such as the www.kerneloops.org website, [7] which provides statistics and public access to reported oopses. A simplified crash screen was introduced in Linux 6.10, similar to the Blue Screen of Death on Windows. [8]
6.8.12 [7] 30 May 2024 [22] 6.7 8 January 2024 [1] 6.7.12 [7] 3 April 2024 Initial Bcachefs filesystem support [23] Itanium support removed [23] Intel Meteor Lake Graphics declared stable [23] Initial Nouveau support for Nvidia GSP firmware [23] Ability to disable IA-32 support at boot time on AMD64 [24]
The startup function startup_32() for the kernel (also called the swapper or process 0) establishes memory management (paging tables and memory paging), detects the type of CPU and any additional functionality such as floating point capabilities, and then switches to non-architecture specific Linux kernel functionality via a call to start ...
The overhead was measured to be 0.28% according to KAISER's original authors; [6] a Linux developer measured it to be roughly 5% for most workloads and up to 30% in some cases, even with the PCID optimization; [5] for database engine PostgreSQL the impact on read-only tests on an Intel Skylake processor was 7–17% (or 16–23% without PCID ...
This allows drivers and devices outside of the mainline kernel to continue working after a Linux kernel upgrade. [ 3 ] Another benefit of DKMS is that it allows the installation of a new driver on an existing system, running an arbitrary kernel version, without any need for manual compilation or precompiled packages provided by the vendor.
Linux is an example of a monolithic-kernel operating system with kernel preemption. The main benefit of kernel preemption is that it solves two issues that would otherwise be problematic for monolithic kernels, in which the kernel consists of one large binary. [5] Without kernel preemption, two major issues exist for monolithic and hybrid kernels: