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Date:   Mon, 28 Dec 2020 11:45:11 -0800
From:   Linus Torvalds <>
To:     Sedat Dilek <>,
        Paolo Bonzini <>
Cc:     Linux Kernel Mailing List <>
Subject: Re: Linux 5.11-rc1

On Mon, Dec 28, 2020 at 7:26 AM Sedat Dilek <> 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).


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