linux-kernel - Re: [PATCH v2 16/18] arm64: crypto: disable LTO for aes-ce-cipher.c

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Message-ID: <20171120205139.GC89108@samitolvanen.mtv.corp.google.com>
Date:   Mon, 20 Nov 2017 12:51:39 -0800
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     Alex Matveev <alxmtvv@...il.com>, Andi Kleen <ak@...ux.intel.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Greg Hackmann <ghackmann@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Yury Norov <ynorov@...iumnetworks.com>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH v2 16/18] arm64: crypto: disable LTO for aes-ce-cipher.c

On Mon, Nov 20, 2017 at 03:20:14PM +0000, Mark Rutland wrote:
> Could you elaborate on what the integrated asembler doesn't like?

Here's the error, looks like in aes_sub:

<inline asm>:1:69: error: invalid operand for instruction
        dup     v1.4s, w12              ;movi   v0.16b, #0              ;aese   v0.16b, v1.16b          ;umov   w12, v0.4s[0]   ;
                                                                                                                     ^
LLVM ERROR: Error parsing inline asm

Sami