Find all needed information about Cpu Hotplug Support In Linuxtm Kernel. Below you can see links where you can find everything you want to know about Cpu Hotplug Support In Linuxtm Kernel.
https://www.kernel.org/doc/html/v4.11/core-api/cpu_hotplug.html
A more novel use of CPU-hotplug support is its use today in suspend resume support for SMP. Dual-core and HT support makes even a laptop run SMP kernels which didn’t support these methods. Command Line Switches ¶
https://www.quora.com/What-is-CPU-hotplug-in-Linux-Kernel
Aug 25, 2016 · Please note that not all server supports cpu hotplug but almost all server can support disabling or enabling cpu core on a Linux operating systems. There are couple OEMS that support NUMA hardware which are hot pluggable as well, where physical node insertion and removal require support for CPU hotplug.
https://www.kernel.org/doc/html/latest/x86/x86_64/cpu-hotplug-spec.html
Linux/x86-64 supports CPU hotplug now. For various reasons Linux wants to know in advance of boot time the maximum number of CPUs that could be plugged into the system. ACPI 3.0 currently has no official way to supply this information from the firmware to the operating system. In ACPI each CPU needs an LAPIC object in the MADT table (5.2.11.5 in the ACPI 3.0 specification).
https://www.kernel.org/doc/ols/2004/ols2004v2-pages-181-194.pdf
Advanced features such as CPU Guard in PPC64 architectures, and Machine Check Abort (MCA) features in Itanium® Prod-uct Family (IPF) permit the hardware to catch recoverable failures that are symp-tomatic of a failing CPU and remove that CPU before an unrecoverable failure oc-curs. An unused CPU can later be brought online to replace the failed CPU.
http://lkml.iu.edu/hypermail/linux/kernel/0511.1/1015.html
+Linux kernel. + +A more novel use of CPU-hotplug support is its use in suspend +resume support for SMP. Dual-core and HT support makes even +a laptop run SMP kernels which didn't support these methods. SMP support +for suspend/resume is a work in progress. This is a work in progress in +ACPI for now. + +General Stuff about CPU Hotplug +-----+
https://www.mjmwired.net/kernel/Documentation/cpu-hotplug.txt
Hence the need for CPU hotplug support in the 33 Linux kernel. 34 35 A more novel use of CPU-hotplug support is its use today in suspend 36 resume support for SMP. Dual-core and HT support makes even 37 a laptop run SMP kernels which didn't support these methods. SMP support 38 for suspend/resume is a work in progress.
https://github.com/torvalds/linux/blob/master/Documentation/core-api/cpu_hotplug.rst
Jan 13, 2017 · Such advances require CPUs available to a kernel to be removed either for provisioning reasons, or for RAS purposes to keep an offending CPU off system execution path. Hence the need for CPU hotplug support in the Linux kernel. A more novel use of CPU-hotplug support is its use today in suspend resume support for SMP.
https://www.kernel.org/doc/html/latest/admin-guide/mm/memory-hotplug.html
Jul 28, 2007 · For ACPI memory hotplug, the following are also necessary: Memory hotplug (under ACPI Support menu) ( CONFIG_ACPI_HOTPLUG_MEMORY) This option can be kernel module. As a related configuration, if your box has a feature of NUMA-node hotplug via ACPI, then this option is necessary too. ACPI0004,PNP0A05...
https://www.cyberciti.biz/faq/debian-rhel-centos-redhat-suse-hotplug-cpu/
May 26, 2015 · Please note that not all server supports cpu hotplug but almost all server can support disabling or enabling cpu core on a Linux operating systems. There are couple OEMS that support NUMA hardware which are hot pluggable as well, where physical node insertion and removal require support for CPU hotplug.
https://www.kernel.org/doc/html/v5.4-rc8/core-api/memory-hotplug.html
synchronize against CPU hotplug and similar (e.g. relevant for ACPI and PPC) Especially, there is a possible lock inversion that is avoided using device_hotplug_lock when adding memory and user space tries to online that memory faster than expected: device_online() will first take the device_lock(), followed by mem_hotplug_lock
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