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Wed, 12 Oct 2022 21:56:21 -0700 (PDT) Received: from localhost ([50.221.140.188]) by smtp.gmail.com with ESMTPSA id c12-20020a6566cc000000b0046ae5cfc3d5sm1519896pgw.61.2022.10.12.21.56.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 21:56:21 -0700 (PDT) Subject: [PATCH 1/4] Documentation: RISC-V: Fix a typo in patch-acceptance Date: Wed, 12 Oct 2022 21:56:16 -0700 Message-Id: <20221013045619.18906-2-palmer@rivosinc.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221013045619.18906-1-palmer@rivosinc.com> References: <20221013045619.18906-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: corbet@lwn.net, Paul Walmsley , Palmer Dabbelt , aou@eecs.berkeley.edu, conor.dooley@microchip.com, Atish Patra , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux@rivosinc.com, Palmer Dabbelt From: Palmer Dabbelt To: Conor Dooley , Atish Patra X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221012_215623_053682_F08D50CC X-CRM114-Status: GOOD ( 12.18 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Palmer Dabbelt I just stumbled on this when modifying the docs. Signed-off-by: Palmer Dabbelt Reviewed-by: Anup Patel --- Documentation/riscv/patch-acceptance.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/riscv/patch-acceptance.rst b/Documentation/riscv/patch-acceptance.rst index dfe0ac5624fb..5da6f9b273d6 100644 --- a/Documentation/riscv/patch-acceptance.rst +++ b/Documentation/riscv/patch-acceptance.rst @@ -29,7 +29,7 @@ their own custom extensions. These custom extensions aren't required to go through any review or ratification process by the RISC-V Foundation. To avoid the maintenance complexity and potential performance impact of adding kernel code for implementor-specific -RISC-V extensions, we'll only to accept patches for extensions that +RISC-V extensions, we'll only accept patches for extensions that have been officially frozen or ratified by the RISC-V Foundation. (Implementors, may, of course, maintain their own Linux kernel trees containing code for any custom extensions that they wish.) From patchwork Thu Oct 13 04:56:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Palmer Dabbelt X-Patchwork-Id: 13005609 X-Patchwork-Delegate: palmer@dabbelt.com 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 01B7AC43217 for ; Thu, 13 Oct 2022 04:56:44 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:From:Cc:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 12 Oct 2022 21:56:22 -0700 (PDT) Received: from localhost ([50.221.140.188]) by smtp.gmail.com with ESMTPSA id y8-20020a17090a104800b001f319e9b9e5sm2241272pjd.16.2022.10.12.21.56.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 21:56:22 -0700 (PDT) Subject: [PATCH 2/4] Documentation: RISC-V: Allow patches for non-standard behavior Date: Wed, 12 Oct 2022 21:56:17 -0700 Message-Id: <20221013045619.18906-3-palmer@rivosinc.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221013045619.18906-1-palmer@rivosinc.com> References: <20221013045619.18906-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: corbet@lwn.net, Paul Walmsley , Palmer Dabbelt , aou@eecs.berkeley.edu, conor.dooley@microchip.com, Atish Patra , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux@rivosinc.com, Palmer Dabbelt From: Palmer Dabbelt To: Conor Dooley , Atish Patra X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221012_215624_304658_40E65823 X-CRM114-Status: GOOD ( 13.31 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Palmer Dabbelt The patch acceptance policy forbids accepting support for non-standard behavior. This policy was written in order to both steer implementers towards the standards and to avoid coupling the upstream kernel too tightly to vendor-specific features. Those were good goals, but in practice the policy just isn't working: every RISC-V system we have needs vendor-specific behavior in the kernel and we end up taking that support which violates the policy. That's confusing for contributors, which is the main reason we have a written policy in the first place. So let's just start taking code for vendor-defined behavior. Reviewed-by: Conor Dooley Signed-off-by: Palmer Dabbelt Reviewed-by: Anup Patel Reviewed-by: Conor Dooley --- Documentation/riscv/patch-acceptance.rst | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/Documentation/riscv/patch-acceptance.rst b/Documentation/riscv/patch-acceptance.rst index 5da6f9b273d6..0a6199233ede 100644 --- a/Documentation/riscv/patch-acceptance.rst +++ b/Documentation/riscv/patch-acceptance.rst @@ -29,7 +29,12 @@ their own custom extensions. These custom extensions aren't required to go through any review or ratification process by the RISC-V Foundation. To avoid the maintenance complexity and potential performance impact of adding kernel code for implementor-specific -RISC-V extensions, we'll only accept patches for extensions that -have been officially frozen or ratified by the RISC-V Foundation. -(Implementors, may, of course, maintain their own Linux kernel trees -containing code for any custom extensions that they wish.) +RISC-V extensions, we'll only accept patches for extensions that either: + +- Have been officially frozen or ratified by the RISC-V Foundation, or +- Have been implemented in hardware that is either widely available or + for which a timeline for availability has been made public. + +Hardware that does not meet its published timelines may have support +removed. (Implementors, may, of course, maintain their own Linux kernel +trees containing code for any custom extensions that they wish.) 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Wed, 12 Oct 2022 21:56:23 -0700 (PDT) Received: from localhost ([50.221.140.188]) by smtp.gmail.com with ESMTPSA id b17-20020a170902d41100b0017bb38e4591sm11385104ple.41.2022.10.12.21.56.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 21:56:23 -0700 (PDT) Subject: [PATCH 3/4] Documentation: RISC-V: Mention the UEFI Standards Date: Wed, 12 Oct 2022 21:56:18 -0700 Message-Id: <20221013045619.18906-4-palmer@rivosinc.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221013045619.18906-1-palmer@rivosinc.com> References: <20221013045619.18906-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: corbet@lwn.net, Paul Walmsley , Palmer Dabbelt , aou@eecs.berkeley.edu, conor.dooley@microchip.com, Atish Patra , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux@rivosinc.com, Palmer Dabbelt From: Palmer Dabbelt To: Conor Dooley , Atish Patra X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221012_215624_893495_B7F0E2EB X-CRM114-Status: GOOD ( 10.60 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Palmer Dabbelt The current patch acceptance policy requires that specifications are approved by the RISC-V foundation, but we rely on external specifications as well. This explicitly calls out the UEFI specifications that we're starting to depend on. Reviewed-by: Conor Dooley Reviewed-by: Atish Patra Signed-off-by: Palmer Dabbelt Reviewed-by: Anup Patel --- Documentation/riscv/patch-acceptance.rst | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/Documentation/riscv/patch-acceptance.rst b/Documentation/riscv/patch-acceptance.rst index 0a6199233ede..9fed6b318b49 100644 --- a/Documentation/riscv/patch-acceptance.rst +++ b/Documentation/riscv/patch-acceptance.rst @@ -20,9 +20,11 @@ Submit Checklist Addendum ------------------------- We'll only accept patches for new modules or extensions if the specifications for those modules or extensions are listed as being -"Frozen" or "Ratified" by the RISC-V Foundation. (Developers may, of -course, maintain their own Linux kernel trees that contain code for -any draft extensions that they wish.) +unlikely to be incompatibly changed in the future. For +specifications from the RISC-V foundation this means "Frozen" or +"Ratified", for the UEFI forum specifications this means a published +ECR. (Developers may, of course, maintain their own Linux kernel trees +that contain code for any draft extensions that they wish.) Additionally, the RISC-V specification allows implementors to create their own custom extensions. These custom extensions aren't required From patchwork Thu Oct 13 04:56:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Palmer Dabbelt X-Patchwork-Id: 13005611 X-Patchwork-Delegate: palmer@dabbelt.com 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 DAD67C43217 for ; Thu, 13 Oct 2022 04:56:48 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:From:Cc:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 12 Oct 2022 21:56:25 -0700 (PDT) Received: from localhost ([50.221.140.188]) by smtp.gmail.com with ESMTPSA id i17-20020a170902cf1100b00177f25f8ab3sm11484255plg.89.2022.10.12.21.56.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Oct 2022 21:56:24 -0700 (PDT) Subject: [PATCH 4/4] Documentation: RISC-V: patch-acceptance: s/implementor/implementer Date: Wed, 12 Oct 2022 21:56:19 -0700 Message-Id: <20221013045619.18906-5-palmer@rivosinc.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20221013045619.18906-1-palmer@rivosinc.com> References: <20221013045619.18906-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: corbet@lwn.net, Paul Walmsley , Palmer Dabbelt , aou@eecs.berkeley.edu, conor.dooley@microchip.com, Atish Patra , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux@rivosinc.com, Palmer Dabbelt , Conor Dooley From: Palmer Dabbelt To: Conor Dooley , Atish Patra X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221012_215626_454837_1948519D X-CRM114-Status: GOOD ( 11.17 ) 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: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Palmer Dabbelt Implementor does appear to be a word, but it's not very common. Suggested-by: Conor Dooley Signed-off-by: Palmer Dabbelt Reviewed-by: Anup Patel Reviewed-by: Conor Dooley --- Documentation/riscv/patch-acceptance.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/riscv/patch-acceptance.rst b/Documentation/riscv/patch-acceptance.rst index 9fed6b318b49..89c7d8abd4bb 100644 --- a/Documentation/riscv/patch-acceptance.rst +++ b/Documentation/riscv/patch-acceptance.rst @@ -26,7 +26,7 @@ specifications from the RISC-V foundation this means "Frozen" or ECR. (Developers may, of course, maintain their own Linux kernel trees that contain code for any draft extensions that they wish.) -Additionally, the RISC-V specification allows implementors to create +Additionally, the RISC-V specification allows implementers to create their own custom extensions. These custom extensions aren't required to go through any review or ratification process by the RISC-V Foundation. To avoid the maintenance complexity and potential @@ -38,5 +38,5 @@ RISC-V extensions, we'll only accept patches for extensions that either: for which a timeline for availability has been made public. Hardware that does not meet its published timelines may have support -removed. (Implementors, may, of course, maintain their own Linux kernel +removed. (Implementers, may, of course, maintain their own Linux kernel trees containing code for any custom extensions that they wish.)