Hi,
> -----Original Message----- > From: Pavel Machek [mailto:pa...@ucw.cz] > Sent: Sunday, June 26, 2016 12:52 AM > To: Chen, Yu C > Cc: linux...@vger.kernel.org; x...@kernel.org; Rafael J. Wysocki; Len Brown; > Peter Zijlstra; H. Peter Anvin; Borislav Petkov; Brian Gerst; Thomas Gleixner; > Ingo Molnar; Varun Koyyalagunta; linux-kernel@vger.kernel.org > Subject: Re: [PATCH 2/4][RFC v2] PM / sleep: Introduce arch-specific hook for > disable/enable nonboot cpus > > On Sun 2016-06-26 00:18:41, Chen Yu wrote: > > There is requirement that we need to do some arch-specific operations > > before putting the nonboot CPUs offline/online. > > One of the requirements comes from the hibernation resume process on > > x86_64, we need to kick all the offlin-CPUs online and offline again, > > in order to put them in a safe state, thus to avoid possible unwilling > > wake up during hibernation resume. > > You may want to check english here. Ah, sorry, I'll rewrite the log, and [PATCH 4/4] might contain the detail of this issue. thanks, Yu