On Tue, Sep 04, 2012 at 03:36:24PM -0700, Andrew Morton wrote: > On Mon, 3 Sep 2012 22:24:58 +0800 > Shawn Guo <[email protected]> wrote: > > > Like kernel_power_off calls disable_nonboot_cpus, we may want to have > > kernel_restart call disable_nonboot_cpus as well. Doing so can help > > the machines that require boot cpu be the last alive cpu during reboot > > to survive with kernel restart. > > That does sound logical. But the changelog is very vague and fluffy. > Does this patch actually fix any known problem on any known machine? > Yes, it fixes one reboot issue seen on imx6q (Cortex-A9 Quad). The machine requires the restart routine run on primary cpu than secondary ones. Otherwise, the secondary core running restart routine will fail to come to online after reboot.
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