Messages in this thread | | | Subject | Re: [PATCH] arm64: cpufeature: Export Armv8.6 Matrix feature to userspace | From | Julien Grall <> | Date | Tue, 29 Oct 2019 15:32:42 +0000 |
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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
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