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From: Sasha Levin <sashal@kernel.org>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Alistair Strachan <astrachan@google.com>,
	Sami Tolvanen <samitolvanen@google.com>,
	Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: LLD patches for x86_64
Date: Thu, 11 Apr 2019 10:39:24 -0400
Message-ID: <20190411143924.GK11568@sasha-vm> (raw)
In-Reply-To: <20190411142538.GA3455@archlinux-i9>

On Thu, Apr 11, 2019 at 07:25:38AM -0700, Nathan Chancellor wrote:
>On Thu, Apr 11, 2019 at 09:58:04AM -0400, Sasha Levin wrote:
>> On Wed, Apr 10, 2019 at 08:51:43PM -0700, Nathan Chancellor wrote:
>> > Hi Greg and Sasha,
>> >
>> > Please apply the following mbox files to their respective trees. They
>> > contain upstream patches that allow a tip of tree LLD to link an x86
>> > kernel image as well as a patch to avoid using $(LD) to check for
>> > the location of binutils, which won't always be accurate when linking
>> > with LLD. This was tested with both the upstream defconfig and Android's
>> > x86_64_cuttlefish_defconfig in their respective trees (building/linking
>> > with both Clang/LLD and GCC/ld.bfd then booting in QEMU).
>> >
>> > For 5.0, a simple cherry-pick of commit ad15006cc784 ("kbuild: clang:
>> > choose GCC_TOOLCHAIN_DIR not on LD") will do.
>> >
>> > Greg, the merge into kernel/common will result in two conflicts:
>> >
>> > * Makefile:
>> >    Make the diff match upstream commit
>> >        ad15006cc784 ("kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD")
>> >
>> > * arch/x86/entry/vdso/Makefile:
>> >    Take the right hand side, effectively replacing common commit
>> >        35b779802c2e ("x86: vdso: Fix leaky vdso linker with CC=clang.")
>> >    with the proper upstream commit
>> >        379d98ddf413 ("x86: vdso: Use $LD instead of $CC to link")
>>
>> Nathan,
>>
>> I might be missing something, but ad15006cc784 does not touch
>> arch/x86/entry/vdso/Makefile nor does it generate any conflicts.
>>
>
>Hi Sasha,
>
>You are correct. The conflict notes were for when Greg does the LTS
>merge into the Android common kernel, which has an out of tree patch
>that will cause a conflict with ad15006cc784. The conflict in the x86
>vDSO Makefile comes from the other patches in the series. None of that
>matters for upstream.
>
>(resending to drop the fat finger in the To line...)

Got it.

I've queued up all the requested patches.

--
Thanks,
Sasha

  reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-11  3:51 Nathan Chancellor
2019-04-11 13:58 ` Sasha Levin
2019-04-11 14:21   ` Nathan Chancellor
2019-04-11 14:25   ` Nathan Chancellor
2019-04-11 14:39     ` Sasha Levin [this message]
2019-04-17 18:24 ` Greg Kroah-Hartman
2019-04-17 18:37   ` Nathan Chancellor

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