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From: James Morse <james.morse@arm.com>
To: "Chen, Yu C" <yu.c.chen@intel.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>, Pavel Machek <pavel@ucw.cz>,
	Borislav Petkov <bp@suse.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>, Len Brown <lenb@kernel.org>,
	"x86@kernel.org" <x86@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH][RFC v3] x86, hotplug: Use hlt instead of mwait if invoked from disable_nonboot_cpus
Date: Thu, 07 Jul 2016 17:03:19 +0100	[thread overview]
Message-ID: <577E7D47.7000904@arm.com> (raw)
In-Reply-To: <36DF59CE26D8EE47B0655C516E9CE6402877EBB4@shsmsx102.ccr.corp.intel.com>

Hi,

On 07/07/16 03:50, Chen, Yu C wrote:
>> From: Rafael J. Wysocki [mailto:rjw@rjwysocki.net]
>> Below is my sort of version of this (untested) and I did it this way, because the
>> issue is specific to resume from hibernation (the workaround need not be
>> applied anywhere else) and the hibernate_resume_nonboot_cpu_disable()
>> thing may be useful to arm64 too if I'm not mistaken (James?).
> 
> James might want a flag to distinguish whether it is from suspend or resume,
> in his arch-specific disabled_nonboot_cpus?

That isn't serious, we can work out whether it is hibernate/resume based on
whether we've read data out of the the arch header. I added it in the other
series as it looked cleaner to pass the value in instead of inferring it.


Thanks,

James

  reply	other threads:[~2016-07-07 16:05 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-28  9:16 [PATCH][RFC v3] x86, hotplug: Use hlt instead of mwait if invoked from disable_nonboot_cpus Chen Yu
2016-07-07  0:33 ` Rafael J. Wysocki
2016-07-07  2:50   ` Chen, Yu C
2016-07-07 16:03     ` James Morse [this message]
2016-07-07  8:38   ` James Morse
2016-07-07 12:25     ` Rafael J. Wysocki
2016-07-10  1:49 ` [PATCH] x86 / hibernate: Use hlt_play_dead() when resuming from hibernation Rafael J. Wysocki
2016-07-13  9:56   ` Pavel Machek
2016-07-13 10:29     ` Chen Yu
2016-07-13 12:01     ` Rafael J. Wysocki
2016-07-13 12:41       ` Rafael J. Wysocki
2016-07-28 19:33       ` Pavel Machek
2016-07-14  1:55   ` [PATCH v2] " Rafael J. Wysocki
2016-07-14  8:57     ` Ingo Molnar
2016-07-28 19:34     ` Pavel Machek

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