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Date:	Thu, 18 Feb 2016 21:45:59 +0100
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Matt Fleming <matt@...eblueprint.co.uk>
Cc:	"Rafael J. Wysocki" <rafael@...nel.org>,
	"Zheng, Lv" <lv.zheng@...el.com>, Dave Young <dyoung@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	Josh Triplett <josh@...htriplett.org>,
	Borislav Petkov <bp@...en8.de>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [PATCH 1/2] ACPICA: Tables: Add function to remove ACPI tables

On Thu, Feb 18, 2016 at 9:41 PM, Matt Fleming <matt@...eblueprint.co.uk> wrote:
> On Thu, 18 Feb, at 09:15:28PM, Rafael J. Wysocki wrote:
>>
>> Actually, the reason is that, as a rule, the process for ACPICA
>> patches is that they first go to upstream ACPICA and they are acquired
>> by Linux from there.
>>
>> While there are some exceptions from that process, there also are good
>> reasons for that process to be followed, including the licensing one
>> mentioned by Lv.
>>
>> All that said, Matt, if you agree that the patch can be applied under
>> the BSD license, I think we can offer help with converting it to the
>> upstream ACPICA coding conventions and applying it there.  Lv, would
>> you be able to take care of that?
>
> I don't have any problem with that, but can we hold off on this patch
> for now? There's another approach to fixing the BGRT issue with kexec
> that's being discussed which would supersede this,
>
>   https://lkml.kernel.org/r/20160218141544.GH2651@codeblueprint.co.uk
>
> Assuming this patch does get picked up again, I'm happy to respin it
> against upstream ACPICA, but how do I go about getting dependent
> patches merged, PATCH 2/2 in this case?

We generate a Linux version of the patch out of the upstream ACPICA
sources (semi-automatically) and that can be merged into Linux in
advance.  We don't do that as a rule, but it can be done.  That at
least ensures that we'll be consistent with future ACPICA updates from
the upstream.

Thanks,
Rafael

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