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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Mon, 28 Dec 2020 11:45:11 -0800
Message-ID: <CAHk-=wj+V1dkij1vTH+pk7LgwQ4snBH1Y+6Ts6jgSXRGDuFKdg@mail.gmail.com>
Subject: Re: Linux 5.11-rc1
To:     Sedat Dilek <sedat.dilek@gmail.com>,
        Paolo Bonzini <pbonzini@redhat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Mon, Dec 28, 2020 at 7:26 AM Sedat Dilek <sedat.dilek@gmail.com> wrote:
>
> I also tested with LLVM toolchain v11.0.1-rc2 together with passing
> LLVM=1 and LLVM_IAS=1 to my make line.
>
> I had one ERROR:
>
> error: too few operands for instruction in arch/x86/kvm/svm/sev.c

Looks like Paolo already picked up the fix, so this should be fixed
when I get the next kvm pull request.

That said, you might want to make sure the  LLVM people know about this too.

The whole "implicit arguments" is a common thing in x86, where lots of
instructions don't need to spell them out explicitly, because of fixed
register allocation (example: divide/multiply instructions only work
with ax/dx as a target etc).

             Linus