linux-kernel - Re: [PATCH 5.18 000/231] 5.18.13-rc1 review

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Message-ID: <CAHk-=wjo-u8=yJQJQnaP41FkQw7we9A-zJH3UELx5x_1ynPDfw@mail.gmail.com>
Date:   Tue, 19 Jul 2022 12:32:48 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Shuah Khan <shuah@...nel.org>, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, Pavel Machek <pavel@...x.de>,
        Jon Hunter <jonathanh@...dia.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Slade Watkins <slade@...dewatkins.com>,
        John Harrison <John.C.Harrison@...el.com>,
        Tejas Upadhyay <tejas.upadhyay@...el.com>,
        Anusha Srivatsa <anusha.srivatsa@...el.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
Subject: Re: [PATCH 5.18 000/231] 5.18.13-rc1 review

On Tue, Jul 19, 2022 at 10:57 AM Naresh Kamboju
<naresh.kamboju@...aro.org> wrote:
>
>
> Details log:
> ------------
> 1. i386 build failures with clang-13 and clang-14
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1
> ARCH=i386 CROSS_COMPILE=i686-linux-gnu- 'HOSTCC=sccache clang'
> 'CC=sccache clang'
> ld.lld: error: undefined symbol: __udivdi3

Looks like the one introduced by aff1e0b09b54 ("drm/i915/ttm: fix
sg_table construction"), and fixed by ced7866db39f ("drm/i915/ttm: fix
32b build").

> 2. Large number of build warnings on x86 with gcc-11,
> I do not see these build warnings on mainline,
..
> 'naked' return found in RETPOLINE build

Hmm. Does your cross-compiler support '-mfunction-return=thunk-extern'?

Your build does magic things with 'scripts/kconfig/merge_config.sh',
and I'm wondering if you perhaps end up enabling CONFIG_RETHUNK with a
compiler that doesn't actually support it, or something like that?

             Linus