linux-kernel - Re: [PATCH] arm64: LLVMLinux: Provide __aeabi

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Date:	Mon, 08 Sep 2014 16:53:39 -0500
From:	Behan Webster <behanw@...verseincode.com>
To:	Mark Charlebois <charlebm@...il.com>,
	Catalin Marinas <catalin.marinas@....com>
CC:	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Will Deacon <Will.Deacon@....com>,
	"zhichang.yuan@...aro.org" <zhichang.yuan@...aro.org>,
	"dsaxena@...aro.org" <dsaxena@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: LLVMLinux: Provide __aeabi_* symbols which are
 needed for clang

On 09/08/14 16:01, Mark Charlebois wrote:
> On Sun, Sep 7, 2014 at 12:30 AM, Catalin Marinas
> <catalin.marinas@....com> wrote:
>> On 7 Sep 2014, at 03:30, Mark Charlebois <charlebm@...il.com> wrote:
>>> On Sat, Sep 6, 2014 at 7:16 AM, Arnd Bergmann <arnd@...db.de> wrote:
>>>> On Friday 05 September 2014 16:23:14 behanw@...verseincode.com wrote:
>>>>> + *  Copyright (C) 2012  Mark Charlebois
>>>>> + */
>>>>> +
>>>>> +/*
>>>>> + * EABI routines
>>>> Does EABI specify these function names? I would think that they are
>>>> just random libgcc (whatever that is called in clang) functions.
>>> http://infocenter.arm.com/help/topic/com.arm.doc.ihi0043d/IHI0043D_rtabi.pdf
>>>
>>> See section 4.3.4 Memory copying, clearing, and setting
>> What does this document have to do with arm64 (AArch64, A64)? We don’t
>> need such symbols on arm64. Also, the arm64 kernel links with libgcc (no
>> immediate need AFAICT but the compiler does not guarantee the intrinsics
>> would always be generated inline).
> [reposting in plain text]
>
> This patch was made early in the arm64 kernel support. I just retested
> and you are correct, it is no longer needed.  My apologies to all.

Whoops. I normally check whether a patch is still needed before posting 
them. I seem to have missed that step this time. My apologies as well.

That all being said, I prefer to see patches no longer required, than 
needing them to be upstreamed, so in that this is a win.

Behan

-- 
Behan Webster
behanw@...verseincode.com

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