linux-kernel - Re: [PATCH v3 2/2] ACPI,acpi_memhotplug: Remove acpi_memory

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Date:	Tue, 02 Apr 2013 14:57:03 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
Cc:	Toshi Kani <toshi.kani@...com>, linux-acpi@...r.kernel.org,
	tangchen@...fujitsu.com, wency@...fujitsu.com,
	laijs@...fujitsu.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] ACPI,acpi_memhotplug: Remove acpi_memory_info->failed bit

On Tuesday, April 02, 2013 09:12:44 AM Yasuaki Ishimatsu wrote:
> Hi Rafael,
> 
> 2013/04/02 8:48, Rafael J. Wysocki wrote:
> > On Thursday, March 28, 2013 08:58:03 AM Yasuaki Ishimatsu wrote:
> >> Hi Rafael,
> >>
> >> 2013/03/26 22:41, Rafael J. Wysocki wrote:
> >>> On Tuesday, March 26, 2013 08:57:05 AM Yasuaki Ishimatsu wrote:
> >>>> 2013/03/23 5:24, Toshi Kani wrote:
> >>>>> On Fri, 2013-03-22 at 10:53 +0900, Yasuaki Ishimatsu wrote:
> >>>>>> acpi_memory_info has enabled bit and failed bit for controlling memory
> >>>>>> hotplug. But we don't need to keep both bits.
> >>>>>>
> >>>>>> The patch removes acpi_memory_info->failed bit.
> >>>>>>
> >>>>>> Signed-off-by: yasuaki ishimatsu <isimatu.yasuaki@...fujitsu.com>
> >>>>>
> >>>>> Thanks for the update.  It looks good.  For the series:
> >>>>>
> >>>>> Acked-by: Toshi Kani <toshi.kani@...com>
> >>>>
> >>>> Thanks!
> >>>
> >>> Both patches applied to linux-pm.git/linux-next.
> >>
> >> Thank you for applying both patches.
> >> If you don't mind, I hope these patches are merged into linux-3.9
> >> since this is bug fix.
> >
> > I honestly don't think that [2/2] is 3.9 material, but I can push [1/2]
> > for 3.9 provided that you also regard it as material for 3.8-stable.
> 
> linux-3.8 does not support physical memory hot remove. It has been supported
> since linux-3.9. So I don't need [1/2] patch to linux-3.8 but need it to
> linux-3.9. So please push [1/2] patch to linux-3.9.

Well, I don't think it would be a good idea to push that patch for 3.9 so late
in the cycle.  Yes, it would make memory hotplug work in 3.9, but that might
surprise some people and cause problems to happen as a result and we wouldn't
have the time to address them before the 3.9 release.

If that's not a big problem, I'd prefer to defer that patch until the 3.10
merge window is open (which is just about 2 weeks from now) and if need be we
can still push it for 3.9-stable afterward.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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