Messages in this thread | | | Date | Mon, 26 Feb 2018 18:05:21 +0000 | From | Will Deacon <> | Subject | Re: [PATCH v2 2/2] arm64: Expose Arm v8.4 features |
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On Wed, Feb 07, 2018 at 02:21:06PM +0000, Suzuki K Poulose wrote: > Expose the new features introduced by Arm v8.4 extensions to > Arm v8-A profile. > > These include : > > 1) Data indpendent timing of instructions. (DIT, exposed as HWCAP_DIT) > 2) Unaligned atomic instructions and Single-copy atomicity of loads > and stores. (AT, expose as HWCAP_USCAT) > 3) LDAPR and STLR instructions with immediate offsets (extension to > LRCPC, exposed as HWCAP_ILRCPC) > 4) Flag manipulation instructions (TS, exposed as HWCAP_FLAGM).
Please resend this but continuing with the default of FTR_STRICT, as we currently have. That way this can be merged while we work out what we want to do there.
> While at it get rid of the RES0 entries in the cpu-feature-registers.txt > documentation, as: > 1) We care only about the user visible fields. > 2) The field may not be up-to-date > 3) We already explain the rules of the fields if it is not visible.
Please spin this part as a separate patch.
Will
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