Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 20 Jul 2023 20:27:05 +0100
From:   Conor Dooley <conor@kernel.org>
To:     Tomasz Jeznach <tjeznach@rivosinc.com>
Cc:     Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Anup Patel <apatel@ventanamicro.com>,
        Albert Ou <aou@eecs.berkeley.edu>, linux@rivosinc.com,
        linux-kernel@vger.kernel.org, Sebastien Boeuf <seb@rivosinc.com>,
        iommu@lists.linux.dev, Palmer Dabbelt <palmer@dabbelt.com>,
        Nick Kossifidis <mick@ics.forth.gr>,
        linux-riscv@lists.infradead.org
Subject: Re: [PATCH 01/11] RISC-V: drivers/iommu: Add RISC-V IOMMU - Ziommu
 support.
Message-ID: <20230720-charter-lustrous-061e7550ce7c@spud>
References: <cover.1689792825.git.tjeznach@rivosinc.com>
 <c33c24036c06c023947ecb47177da273569b3ac7.1689792825.git.tjeznach@rivosinc.com>
 <20230719-confront-grass-6d0eb304b94f@spud>
 <CAH2o1u5pZQ6iKThFLgnn+_BBZ=j8fu91URYYxwWbfVt3OyerAA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
        protocol="application/pgp-signature"; boundary="uFR2qPiOGZh5u8nm"
Content-Disposition: inline
In-Reply-To: <CAH2o1u5pZQ6iKThFLgnn+_BBZ=j8fu91URYYxwWbfVt3OyerAA@mail.gmail.com>
Precedence: bulk


--uFR2qPiOGZh5u8nm
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Wed, Jul 19, 2023 at 02:43:51PM -0700, Tomasz Jeznach wrote:
> On Wed, Jul 19, 2023 at 1:50=E2=80=AFPM Conor Dooley <conor@kernel.org> w=
rote:

> > Anyway, what I wanted to ask was whether it was valid to use the IOMMU
> > in a system if Ziommu is not present in whatever the ISA extension
> > communication mechanism is? Eg, riscv,isa or the ISA string property in
> > the ACPI tables.
> >
>=20
> Yes, this has been pointed out to me already. As far as I can recall,
> there was a discussion
> at some point to introduce those as Ziommu extensions, later agreeing
> not to call IOMMU
> using ISA string conventions.  Will remove remaining occurrences of
> Ziommu from the series.

Right, thanks for clearing that up. I got a bit confused :)

--uFR2qPiOGZh5u8nm
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCZLmKiQAKCRB4tDGHoIJi
0nKvAQCY4Qfl5o53tpBHorzaEf49d9BTMt+qWrTdweBVlIvXWwEAxSbe0KPPgv4y
zC/FdQ3GvKUVGBGv2E80c4D/boCv1gc=
=X54m
-----END PGP SIGNATURE-----

--uFR2qPiOGZh5u8nm--