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([2605:e000:c74f:dc00:6838:d2b2:17e2:8445]) by smtp.gmail.com with ESMTPSA id bo9sm4156341pjb.21.2019.12.18.15.50.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Dec 2019 15:50:19 -0800 (PST) Subject: Re: QEMU for Qualcomm Hexagon - KVM Forum talk and code available To: Peter Maydell , Taylor Simpson References: <87d0dw83uz.fsf@linaro.org> From: Richard Henderson Message-ID: Date: Wed, 18 Dec 2019 13:50:15 -1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::441 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alessandro Di Federico , "qemu-devel@nongnu.org" , =?UTF-8?Q?Niccol=c3=b2_Izzo?= , "nizzo@rev.ng" , =?UTF-8?Q?Alex_Benn=c3=a9e?= , Aleksandar Markovic Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 12/17/19 8:21 AM, Peter Maydell wrote: > On Tue, 17 Dec 2019 at 18:16, Taylor Simpson wrote: >> Question 2: >> What is the best source of guidance on breaking down support for a new target into a patch series? > > Look at how previous ports did it. E.g. the hppa-linux-user port. The initial merge ends at ebe9383caefd. There are 15 patches -- mostly in linux-user -- before the one that enables compilation. At which point exactly zero instructions are actually implemented. The actual cpu emulation comes afterwards in 8 patches (hppa 1.1 isn't terribly complicated). r~