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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://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://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://community.arm.com/community-help/f/discussions/2098/does-latest-linux-smp-kernel-support-arm-a8-9
For official sources of information, you should refer to kernel.org for main line or the ARM Linux pages for the ARM patches. From what I remember, 2.6.28 + arm2 patch has SMP support for the A9. Cancel
https://www.nxp.com/pages/smp-linux:SMPLINUX
Stated differently, SMP Linux gives you complete access to the multiple cores in the SoC with a single operating system image. Utilizes all processors in NXP system very easily. SMP Linux avoids the configuration and overhead of a hypervisor (supervisor monitor for virtualization) for those who do not need the additional capabilities of a ...
http://lkml.iu.edu/hypermail/linux/kernel/1209.0/03244.html
This patch adds SMP initialisation and spinlocks implementation for AArch64. The spinlock support uses the new load-acquire/store-release instructions to avoid ...
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://stackoverflow.com/questions/20852902/how-to-check-whether-smp-is-enabled-or-disabled-in-the-kernel
How to check whether SMP is enabled or disabled in the kernel? Ask Question Asked 5 years, ... In Linux configuration, check for CONFIG_SMP=y. ... How do I know if ARM's XN (execute never) bit support is enabled on my system?
http://tldp.org/HOWTO/SMP-HOWTO-3.html
SMP support for UltraSparc, SparcServer, Alpha and PowerPC machines is in available in 2.2.x. From Ralf Bächle: MIPS, m68k and ARM does not support SMP; the latter two probly won't ever. That is, I'm going to hack on MIPS-SMP as soon as I get a SMP box ... Does SMP distribute the threads among the processors or is the library the one in charge ...
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