linux-kernel - Re: [PATCH v3 00/11] i386 Clang support

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Message-ID: <87blk7ywp1.fsf@nanos.tec.linutronix.de>
Date:   Thu, 23 Jul 2020 01:08:42 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Dennis Zhou <dennis@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH v3 00/11] i386 Clang support

Dennis Zhou <dennis@...nel.org> writes:
> On Mon, Jul 20, 2020 at 01:49:14PM -0700, Nick Desaulniers wrote:
>> Resend of Brian's v2 with Acks from Peter and Linus collected, as well
>> as the final patch (mine) added. The commit of the final patch discusses
>> some of the architectural differences between GCC and Clang, and the
>> kernels tickling of this difference for i386, which necessitated these
>> patches.
>> 
>> Brian Gerst (10):
>>   x86/percpu: Introduce size abstraction macros
>>   x86/percpu: Clean up percpu_to_op()
>>   x86/percpu: Clean up percpu_from_op()
>>   x86/percpu: Clean up percpu_add_op()
>>   x86/percpu: Remove "e" constraint from XADD
>>   x86/percpu: Clean up percpu_add_return_op()
>>   x86/percpu: Clean up percpu_xchg_op()
>>   x86/percpu: Clean up percpu_cmpxchg_op()
>>   x86/percpu: Clean up percpu_stable_op()
>>   x86/percpu: Remove unused PER_CPU() macro
>> 
>> Nick Desaulniers (1):
>>   x86: support i386 with Clang
>> 
>>  arch/x86/include/asm/percpu.h  | 510 +++++++++++----------------------
>>  arch/x86/include/asm/uaccess.h |   4 +-
>>  2 files changed, 175 insertions(+), 339 deletions(-)
>> 
>> -- 
>> 2.28.0.rc0.105.gf9edc3c819-goog
>> 
>
> This looks great to me! I applied it to for-5.9.

You applied it? I'm not aware that you're maintaining x86 nowadays.

Thanks,

        tglx