linux-kernel - Re: [PATCH v3] arm64: v8.4: Support for new floating point multiplication instructions

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Message-ID: <73019dea-3e2c-8d03-fe1a-6c54527fa401@arm.com>
Date:   Wed, 13 Dec 2017 10:09:22 +0000
From:   Suzuki K Poulose <Suzuki.Poulose@....com>
To:     Dongjiu Geng <gengdongjiu@...wei.com>, catalin.marinas@....com,
        will.deacon@....com, corbet@....net, mark.rutland@....com,
        Dave.Martin@....com, robin.murphy@....com,
        gregkh@...uxfoundation.org, arvind.yadav.cs@...il.com,
        linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxarm@...wei.com
Cc:     huangshaoyu@...wei.com, guohanjun@...wei.com,
        zhanghaibin7@...wei.com, zhihui.gao@...wei.com
Subject: Re: [PATCH v3] arm64: v8.4: Support for new floating point
 multiplication instructions

On 13/12/17 10:13, Dongjiu Geng wrote:
> ARM v8.4 extensions add new neon instructions for performing a
> multiplication of each FP16 element of one vector with the corresponding
> FP16 element of a second vector, and to add or subtract this without an
> intermediate rounding to the corresponding FP32 element in a third vector.
> 
> This patch detects this feature and let the userspace know about it via a
> HWCAP bit and MRS emulation.
> 
> Cc: Dave Martin <Dave.Martin@....com>
> Cc: Suzuki K Poulose <suzuki.poulose@....com>
> Signed-off-by: Dongjiu Geng <gengdongjiu@...wei.com>
> Reviewed-by: Dave Martin <Dave.Martin@....com>

Looks good to me.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>