linux-kernel - Re: [PATCH 7/7] Kbuild: lto: pass -m32/-m64 to to LDFINAL

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Date:   Fri, 2 Feb 2018 21:55:09 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH 7/7] Kbuild: lto: pass -m32/-m64 to to LDFINAL

On Fri, Feb 2, 2018 at 9:38 PM, Nicolas Pitre <nicolas.pitre@...aro.org> wrote:
> On Fri, 2 Feb 2018, Arnd Bergmann wrote:
>
>> Do you have a git tree with other changes for LTO on ARM? I'd
>> like to try that as well.
>
> I currently have only 2 other patches.
>
> You need commit 75fea300d73a that just hit mainline (you may cherry-pick
> it easily if necessary).

Ok, I apparently have that already by basing on today's linux-next.

> Then the following:
>
> ----- >8
> Subject: [PATCH] HACK: enable LTO on ARM
>
> Without the ${KBUILD_VMLINUX_LIBS} move the build fails with missing
> memcpy all over the place. Didn't figure it out yet.

Added that now as well, thanks! I'll see what comes out of it. Have you
tried arm64 already? I suppose I could do the same change there and
see what happens.

      Arnd