lkml.org 
[lkml]   [2019]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] arm64: cpufeature: Export Armv8.6 Matrix feature to userspace
From
Date
Hi Will,

On 29/10/2019 11:36, Will Deacon wrote:
> On Tue, Oct 29, 2019 at 11:26:41AM +0000, Julien Grall wrote:
>> On 29/10/2019 11:15, Will Deacon wrote:
>>> On Fri, Oct 25, 2019 at 06:10:56PM +0100, Julien Grall wrote:
>>>> This patch provides support for reporting the presence of Armv8.6
>>>> Matrix and its optional features to userspace.
>>>
>>> Are you sure this is 8.6 and not earlier?
>>
>> This was introduced by Armv8.6 see [1] but allowed to be used by Armv8.2 and
>> onwards.
>
> That doesn't mean an awful lot though, especially then the features are
> referred to in the docs as things like "ARMv8.2-F64MM".

It is arguable. The feature were announced for Armv8.6 but made available for
previous release.

Anyway, I can remove the "Armv8.6" bits if that's the concern.

Cheers,

--
Julien Grall

\
 
 \ /
  Last update: 2019-10-29 16:35    [W:0.027 / U:1.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site