From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1CE65D6CFA2 for ; Thu, 22 Jan 2026 18:52:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=AOv+PUQogkQfy9rS+N5/Z+Gh9BrgkGf8AEKeNlHHUaQ=; b=liX5Ida1taaetvOk6+bBZqtLWO Fhr/EkrvsPAB8UGtY2687AiEtDhMZT+dL9IDKhvToucNHSysmKvTs+saoddo9fxe43izycga4teCn 1/kyrXt4qXIvtgmx+A4rKSg1dehC2k7LhT9bcmMeyQXyy17z0hiivU8P/i/luJBubqO/8V1/cZUtm aqmU+rRq4f7LAMwsZJqzDVEeH/3+fxMEgZzZS+NgL0lb+iRjEcwEGVBgUQc6KLYSaH4vmWPVKTJYY nZiHtS7KCRgn8cGTUdxTIoFBzNnfMHN/PKQwprcD0UlFLQ5qKfXm4lhky5wsAKR3b+Yb05vRFDB/V Rd84Buxw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1viznM-00000007fII-0YbD; Thu, 22 Jan 2026 18:52:40 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1viznJ-00000007fHc-1QRs for linux-riscv@lists.infradead.org; Thu, 22 Jan 2026 18:52:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9472240B68; Thu, 22 Jan 2026 18:52:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77E0BC19423; Thu, 22 Jan 2026 18:52:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769107956; bh=0V8Y5eVJy8Va7o6YR4MucS7wmP4IbYdB6u3T0vqBFkA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=OY+CRaIhHiTE4ubaMdTXZ+eTymp+O2qsx4SaX3DnPCFakjcC2/XMR1lIpatwSaqWt q6Z9zOQbe38EYaAiVM0+vWvzXHaicCYgZd3VjBD8Xhr3eJKhko7Iv03tS7bGRoisoP 88Cys5otmDXL7Iy1mj3JfkPJ2wPEytn/FnkOXOYfkBn+rJZib0yzY8b03qvMrntgre 5c2fspZD2FKAvek1XxnDaMjzuKUwAKYeT2ynZIGxKwQE9AcoYRCkcHaWE7SrO8m9ma vecI4kbdqVuOQgJLHEWq38F4EIhYZyYSe/oYRPZyBNP4AzQMbaaSa38RSUbcq+upFC zeuyOrHliutFQ== Date: Thu, 22 Jan 2026 18:52:31 +0000 From: Conor Dooley To: Guodong Xu Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Samuel Holland , Heinrich Schuchardt , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Evan Green , Andrew Jones , Paul Walmsley , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] dt-bindings: riscv: Add Supm extension description Message-ID: <20260122-headlamp-champion-0bbad2551d33@spud> References: <20260116-supm-ext-id-v1-0-5fcf778ba4a6@riscstar.com> <20260116-supm-ext-id-v1-1-5fcf778ba4a6@riscstar.com> MIME-Version: 1.0 In-Reply-To: <20260116-supm-ext-id-v1-1-5fcf778ba4a6@riscstar.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260122_105237_424080_13DDF582 X-CRM114-Status: GOOD ( 18.28 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============3293424855974423556==" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org --===============3293424855974423556== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="81dh77ACAYQKu44u" Content-Disposition: inline --81dh77ACAYQKu44u Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 16, 2026 at 10:10:31AM +0800, Guodong Xu wrote: > Add description for the Supm extension. Supm indicates support for pointer > masking in user mode. Supm is mandatory for RVA23S64. >=20 > The Supm extension is ratified in commit d70011dde6c2 ("Update to ratified > state") of riscv-j-extension. >=20 > Signed-off-by: Guodong Xu > --- > Documentation/devicetree/bindings/riscv/extensions.yaml | 17 +++++++++++= ++++++ > 1 file changed, 17 insertions(+) >=20 > diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Do= cumentation/devicetree/bindings/riscv/extensions.yaml > index 4ffd61926505..1922dff03787 100644 > --- a/Documentation/devicetree/bindings/riscv/extensions.yaml > +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml > @@ -262,6 +262,23 @@ properties: > ratified in RISC-V Profiles Version 1.0, with commit b1d8066= 05f87 > ("Updated to ratified state.") > =20 > + - const: supm > + description: | > + The standard Supm extension for pointer masking support in u= ser > + mode (U-mode) as ratified at commit d70011dde6c2 ("Update to > + ratified state") of riscv-j-extension. > + > + Supm represents a combination of underlying hardware capabil= ity > + (Smnpm or Ssnpm), U-mode consumer privilege level, and M/S-m= ode Should we therefore make this require that Smnpm or Ssnpm are present? > + software configuration that enables pointer masking for U-mo= de. > + > + DO NOT include this property in device trees targeting privi= leged > + system software (S-mode or M-mode). > + > + This property is only appropriate in device trees provided to > + U-mode software where the next-higher-privilege-mode supports > + Smnpm or Ssnpm and enables it for U-mode. > + > - const: svade > description: | > The standard Svade supervisor-level extension for SW-managed= PTE A/D >=20 > --=20 > 2.43.0 >=20 --81dh77ACAYQKu44u Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCaXJx7gAKCRB4tDGHoIJi 0rrLAP9+fJ2YwqDLg2ufwFGAYpV04xBNeRNMujDywFtcEXyZCwEApEgBGJywQbRE OqdtJ2qzI1d0kt1LDSw8Q+/m/utpuwg= =FGwz -----END PGP SIGNATURE----- --81dh77ACAYQKu44u-- --===============3293424855974423556== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv --===============3293424855974423556==--