Re: [PATCH 5/6] arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register

From: Will Deacon
Date: Thu Apr 09 2020 - 08:53:08 EST


On Fri, Mar 20, 2020 at 06:19:21PM +0000, Suzuki K Poulose wrote:
> On 01/28/2020 12:39 PM, Anshuman Khandual wrote:
> > ID_DFR0 based TraceFilt feature should not be exposed.
>
> ... to guests.
>
> Hence lets drop it.
>
> Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>

Hmm, doesn't dropping cause it to become NONSTRICT? In general, I'd prefer
that we list all fields in these tables, rather than have implicit behaviour
in their absence.

Will