Messages in this thread | | | Subject | Re: [PATCH] powerpc/sysfs: disable hotplug for the boot cpu | From | Benjamin Herrenschmidt <> | Date | Sat, 15 Jun 2013 08:53:37 +1000 |
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On Thu, 2013-06-13 at 19:25 +0800, Zhao Chenhui wrote: > Some multicore SoCs firstly boot up the cpu0 after warm reset. > In some suspend/resume cases, SoC will do a warm reset when resuming. > In order to ensure that the suspending and resuming is running > on a same cpu, cpu0 should be the last cpu to suspend. Here, cpu0 is > the boot_cpuid.
Well, so:
- In any case, your patch will break pseries, so it's not acceptable.
- Why does it have to absolutely resume from the same CPU it suspended from ? Can't you have a little bit of code on the resuming CPU that checks if it's not online, poke an online one and goes back to sleep ?
Cheers, Ben.
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