zephyr/arch/arm64
Jaxson Han 7904c6f0f3 arch: arm64: Use voting lock for multi-core boot race condition
The exclusive load/store instructions don't work well when MMU and cache
are disabled on some cores e.g. Cortex-A72. Change it to voting lock[1]
to select the primary core when multi-cores boot simultaneously.

The voting lock has reasonable but minimal requirements on the memory
system.

[1] https://www.kernel.org/doc/html/next/arch/arm/vlocks.html

Signed-off-by: Jaxson Han <jaxson.han@arm.com>
2023-10-20 15:09:34 +02:00
..
core arch: arm64: Use voting lock for multi-core boot race condition 2023-10-20 15:09:34 +02:00
include
CMakeLists.txt
Kconfig