[PATCH 1/3] RISC-V: add Bitmanip/Scalar Crypto parsing from DT

[Conor Dooley]

On Wed, Jun 28, 2023 at 12:01:11PM +0200, Samuel Ortiz wrote:
> On Tue, Jun 27, 2023 at 07:48:15PM +0100, Conor Dooley wrote:
> > On Tue, Jun 27, 2023 at 11:14:30AM -0700, Evan Green wrote:
> > > On Tue, Jun 27, 2023 at 7:38 AM Samuel Ortiz <sameo at rivosinc.com> wrote:

> > > It would be nice to consolidate the ones together that search for a
> > > single string and set multiple bits, though I don't have any super
> > > elegant ideas for how off the top of my head.
> > 
> > I've got a refactor of this code in progress, dropping all of these
> > copy-paste in place of a loop. It certainly looks more elegant than
> > this, but it will fall over a bit for these "one string matches many
> > extensions" cases. See here:
> > https://patchwork.kernel.org/project/linux-riscv/patch/20230626-thieving-jockstrap-d35d20b535c5@wendy/
> > My immediate thought is to add another element to riscv_isa_ext_data,
> > that contains "parent" extensions to check for. Should be fairly doable,
> > I'll whip something up on top of that...
> 
> Nice, and thanks for the review.

> Should I wait for your refactor to be merged before pushing this one?

I don't know. I think that you should continue on with your series here,
and whichever goes in second gets rebased on top of the other.
I don't think it makes material difference to review of this patchset as
to whether you rebase on top of what I'm working on, so I wouldn't
bother until it gets merged.

Rather hacky, had less time than expected this morning:
https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/commit/?h=riscv-extensions-strings-supersets
Clearly there's issues with looping to RISCV_ISA_MAX_SUPERSETS & I just
repurposed Zicsr for the sake of testing something in the time I had.

Evan, at a high level, does that look more elegant to you, or have I made
things worse?

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