linux-kernel - Re: [PATCH v2] arm64: use a common .arch preamble for inline assembly

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Date:   Fri, 28 Aug 2020 11:41:58 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Sami Tolvanen <samitolvanen@...gle.com>,
        Will Deacon <will@...nel.org>, Zhenyu Ye <yezhenyu2@...wei.com>
Cc:     Marc Zyngier <maz@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        clang-built-linux@...glegroups.com,
        Mark Rutland <mark.rutland@....com>,
        Nathan Chancellor <natechancellor@...il.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v2] arm64: use a common .arch preamble for inline assembly

On Thu, 27 Aug 2020 13:36:08 -0700, Sami Tolvanen wrote:
> Commit 7c78f67e9bd9 ("arm64: enable tlbi range instructions") breaks
> LLVM's integrated assembler, because -Wa,-march is only passed to
> external assemblers and therefore, the new instructions are not enabled
> when IAS is used.
> 
> This change adds a common architecture version preamble, which can be
> used in inline assembly blocks that contain instructions that require
> a newer architecture version, and uses it to fix __TLBI_0 and __TLBI_1
> with ARM64_TLB_RANGE.

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: use a common .arch preamble for inline assembly
      https://git.kernel.org/arm64/c/1764c3edc668

-- 
Catalin