RFC Introduce logical CPU mapping
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Cover letter [RFC PATCH 0/8] Introduce logical CPU mapping
Will,
Quoted 5 lines · Will Deacon
Hello,
This patch series is an RFC following a discussion I had with Russell the other day:
Quoted 9 lines
http://lists.infradead.org/pipermail/linux-arm-kernel/2011-August/060370.html
The approach I've taken is fairly simple but is enough for booting on a CPU with physical ID != 0 on platforms which can handle it.
Note that I haven't touched the OMAP4 or Tegra platforms since it's not clear from the code how they would be adapted to make use of the physical CPU number.
On OMAP, we use hardware register hand-shake for boot between a boot CPU and non-boot CPU. On OMAP4, boot CPU has to be always CPU0 to ensure that security and firewall initialisation is taken care. Other CPU can't do those things.
Regards
Santosh