Re: [PATCH v5 1/4] RISC-V: add Zbc extension detection

Conor Dooley
2023-06-20T19:12:23Z

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On Tue, Jun 20, 2023 at 12:09:28PM -0700, Palmer Dabbelt wrote:
> On Mon, 12 Jun 2023 14:31:14 PDT (-0700), Conor Dooley wrote:
> > Hey Heiko,
> >
> > On Mon, Jun 12, 2023 at 11:04:39PM +0200, Heiko Stuebner wrote:
> > > From: Heiko Stuebner <heiko.stuebner@vrull.eu>
> > >
> > > Add handling for Zbc extension.
> > >
> > > Zbc provides instruction for carry-less multiplication.
> > >
> > > Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
> > > ---
> > > arch/riscv/Kconfig | 22 ++++++++++++++++++++++
> > > arch/riscv/include/asm/hwcap.h | 1 +
> > > arch/riscv/kernel/cpu.c | 1 +
> > > arch/riscv/kernel/cpufeature.c | 1 +
> > > 4 files changed, 25 insertions(+)
> >
> > Plumbing into the hwprobe stuff would be nice, but that's not a
> > requirement for getting stuff merged :)
>
> IIRC we talked about this on IRC, but IMO we shouldn't require something be
> user visible for it to be merged in the kernel.

Yup, I asked you before replying since I wasn't sure what the "rules"
were about hwprobe since it is so new.

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