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Date:   Wed, 9 Sep 2020 13:40:01 -0500
From:   Segher Boessenkool <segher@kernel.crashing.org>
To:     Linus Torvalds <torvalds@linux-foundation.org>
Cc:     Al Viro <viro@zeniv.linux.org.uk>,
        Nick Desaulniers <ndesaulniers@google.com>,
        linux-arch <linux-arch@vger.kernel.org>,
        Kees Cook <keescook@chromium.org>,
        the arch/x86 maintainers <x86@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
        Christoph Hellwig <hch@lst.de>
Subject: Re: remove the last set_fs() in common code, and remove it for x86 and powerpc v3
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References: <20200903142242.925828-1-hch@lst.de> <20200903142803.GM1236603@ZenIV.linux.org.uk> <CAHk-=wgQNyeHxXfckd1WtiYnoDZP1Y_kD-tJKqWSksRoDZT=Aw@mail.gmail.com>
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On Wed, Sep 09, 2020 at 10:31:34AM -0700, Linus Torvalds wrote:
> And apparently there are people working on this on the gcc side too,
> so it won't just be clang-specific. Nor kernel-specific in that Nick
> tells me some other projects are looking at using that asm goto with
> outputs too.

It will not work like this in GCC, no.  The LLVM people know about that.
I do not know why they insist on pushing this, being incompatible and
everything.


Segher