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Re: [PATCH v1 0/8] s390x/tcg: Implement some z14 facilities

From: Richard Henderson
Subject: Re: [PATCH v1 0/8] s390x/tcg: Implement some z14 facilities
Date: Fri, 25 Sep 2020 15:43:21 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 9/22/20 3:31 AM, David Hildenbrand wrote:
> With this patchset, I can boot a kernel compiled for z14 (requiring
> Miscellaneous-Instruction-Extensions Facility 2) (using -cpu max).


Looks like it wouldn't take too much additional work for z15, if you're of a
mind while we're at it.

Message-Security-Assist 9:
        KDSA to ignore, like KMA.

Miscellaneous-Instruction-Extensions 3:
        A bunch of logical operations, all of which
        already have tcg primitives.

        SELECT, which can re-use op_loc with different inputs.

        MOVE RIGHT TO LEFT, which can't reuse do_helper_mvc
        directly, but could be a copy with trivial changes.

        Trivial changes to op_popcnt.

Vector-Enhancements 2:
        Mostly load/store byte-reversed.
        New vector shift insns.
        FP/Int conversions.
        Vector string search.


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