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[189.69.160.189]) by smtp.gmail.com with ESMTPSA id a20-20020a056808099400b003a371c611f6sm6313319oic.18.2023.08.08.14.10.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Aug 2023 14:10:58 -0700 (PDT) Message-ID: Date: Tue, 8 Aug 2023 18:10:54 -0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH 1/2] riscv: zicond: make non-experimental Content-Language: en-US To: Palmer Dabbelt , Vineet Gupta , Alistair Francis Cc: Richard Henderson , qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Kito Cheng , jeffreyalaw@gmail.com References: From: Daniel Henrique Barboza In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2001:4860:4864:20::29; envelope-from=dbarboza@ventanamicro.com; helo=mail-oa1-x29.google.com X-Spam_score_int: -61 X-Spam_score: -6.2 X-Spam_bar: ------ X-Spam_report: (-6.2 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-4.14, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 8/8/23 17:52, Palmer Dabbelt wrote: > On Tue, 08 Aug 2023 11:45:49 PDT (-0700), Vineet Gupta wrote: >> >> >> On 8/8/23 11:29, Richard Henderson wrote: >>> On 8/8/23 11:17, Vineet Gupta wrote: >>>> zicond is now codegen supported in both llvm and gcc. >>> >>> It is still not in >>> >>> https://wiki.riscv.org/display/HOME/Recently+Ratified+Extensions >> >> Right, its been frozen since April though and with support trickling in >> rest of tooling it becomes harder to test. >> I don't know what exactly QEMU's policy is on this ? > > IIUC we'd historically marked stuff as non-experimental when it's frozen, largely because ratification is such a nebulous process. There's obviously risk there, but there's risk to anything.  Last I can find is 260b594d8a ("RISC-V: Add Zawrs ISA extension support"), which specifically calls out Zawrs as frozen and IIUC adds support without the "x-" prefix. If that's the case then I think it's sensible to remove the 'experimental' status of zicond as well. > > I can't find anything written down about it, though... As soon as we agree on an official policy I'll do a doc update. Thanks, Daniel >