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

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Message-ID: <20180105075732.GA8801@kroah.com>
Date:   Fri, 5 Jan 2018 08:57:32 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     gengdongjiu <gengdongjiu@...wei.com>
Cc:     Suzuki K Poulose <Suzuki.Poulose@....com>, catalin.marinas@....com,
        will.deacon@....com, corbet@....net, mark.rutland@....com,
        Dave.Martin@....com, robin.murphy@....com,
        arvind.yadav.cs@...il.com, linux-arm-kernel@...ts.infradead.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com, 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 Fri, Jan 05, 2018 at 09:22:54AM +0800, gengdongjiu wrote:
> Hi will/catalin
> 
> On 2017/12/13 18:09, Suzuki K Poulose wrote:
> > 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>
> 
>  sorry to disturb you. Reminder, hope this patch can be applied to Linux 4.15-rc7.

New features should not be going into 4.15-rc, that should be a 4.16-rc1
thing, right?

thanks,

greg k-h