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https://elinux.org/images/0/00/Clement-smp-bring-up-on-arm-soc.pdf
Embedded Linux Conference 2014 SMP bring up on ARM SoCs Gregory CLEMENT Free Electrons [email protected] ... SMP on ARM SoC? I A symmetric multiprocessor system (SMP) ... time that SMP support. I IRQ a nity: allows to dedicate one or several CPUs to an
https://linuxdevices.org/arm-unveils-multi-processor-core-with-linux-smp-support/
ARM Ltd. will unveil a unique multi-processor core technology, capable of up to 4-way cache coherent symmetric multi-processing (SMP) running Linux, this week at the Embedded Processor Forum in San Jose, Calif. The “synthesizable multiprocessor” core — a first for ARM — is the result of a partnership with NEC Electronics announced… last October, and …
https://developer.arm.com/tools-and-software/simulation-models/cycle-models/knowledge-articles/smp-linux-on-a-minimal-dual-core-arm-cortex-a15-system
The Linux image needs to be recompiled with SMP support. This is done using the normal kernel configuration process. $ make ARCH=arm menuconfig. The option to enable SMP is under the Kernel Features menu. Make sure Symmetric Multi-Processing is selected as shown below.
https://stackoverflow.com/questions/21182160/how-smp-schedule-work-in-linux-kernel-arm-architecture
The ARM SMP systems support two types of interrupts. SPI (shared peripheral interrupt) and PPI (peripheral private interrupts). The PPI is a per-CPU interrupt source. A special case for SMP of the PPI is an SGI (software generated interrupt); this is a CPU-to-CPU interrupt that is used to signal from one CPU to another in the SMP world (called IPI).
https://tldp.org/HOWTO/SMP-HOWTO-3.html
SMP is supported in 2.0 on the hypersparc (SS20, etc.) systems and Intel 486, Pentium or higher machines which are Intel MP1.1/1.4 compliant. Richard Jelinek adds: right now, systems have been tested up to 4 CPUs and the MP standard (and so Linux) theoretically allows up to 16 CPUs.
https://community.arm.com/developer/ip-products/system/b/soc-design-blog/posts/smp-linux-on-a-minimal-dual-core-arm-cortex-a15-system
May 08, 2014 · Linux Changes. The Linux image needs to be recompiled with SMP support. This is done using the normal kernel configuration process. $ make ARCH=arm menuconfig. The option to enable SMP is under the Kernel Features menu. Make sure …
https://developer.arm.com/tools-and-software/embedded/legacy-tools/ds-5-development-studio/resources/tutorials/linux-symmetric-multiprocessing-kernel-debug
Debugging a Linux Symmetric Multi-Processing (SMP) Kernel using DS-5 In this tutorial, you will learn how to debug a Linux SMP kernel using DS-5. ARM’s developer website includes documentation, tutorials, support resources and more.
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