RE: [PATCH 2/4][RFC v2] PM / sleep: Introduce arch-specific hook for disable/enable nonboot cpus

[Chen, Yu C]

Hi,


> -----Original Message-----
> From: Pavel Machek [mailto:pavel@xxxxxx]
> Sent: Sunday, June 26, 2016 12:52 AM
> To: Chen, Yu C
> Cc: linux-pm@xxxxxxxxxxxxxxx; x86@xxxxxxxxxx; Rafael J. Wysocki; Len Brown;
> Peter Zijlstra; H. Peter Anvin; Borislav Petkov; Brian Gerst; Thomas Gleixner;
> Ingo Molnar; Varun Koyyalagunta; linux-kernel@xxxxxxxxxxxxxxx
> 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