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Message #00402
[Bug 1171253] Re: exynos5 : cpu_suspend for cpuidle broken
I did the modification in the cpuidle driver and used the u-boot before
the commit introducing the cpu booting in hypervisor mode [1] from the
u-boot for arndale [2].
I confirm the AFTR state works with this workaround.
IIUC, the cpu_suspend is not complete as it does not handle the restore
for when the cpu is in Hypervisor mode, right ?
I will keep this bug opened until I see a fix for that.
[1] https://git.linaro.org/gitweb?p=people/ronynandy/u-boot-arndale.git;a=commit;h=affeaad51746944e8c356091b12ff9c9c6183c4a
[2] https://git.linaro.org/gitweb?p=people/ronynandy/u-boot-
arndale.git;a=summary
** Changed in: linaro-power-kernel
Status: New => Confirmed
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Kernel.
https://bugs.launchpad.net/bugs/1171253
Title:
exynos5 : cpu_suspend for cpuidle broken
Status in Kernel related development for Power Management Working Group:
Confirmed
Bug description:
When the cpu exits the AFTR state after the cpu_suspend. The kernel
hangs.
How to reproduce ?
set cpu1 offline:
echo 0 > /sys/devices/system/cpu/cpu1/online
Wait awhile the cpu0 enters the state1 then => hang !
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