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Tue, 14 Sep 2021 08:22:57 -0700 (PDT) Received: from [192.168.1.11] ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id f6sm2090403pjo.0.2021.09.14.08.22.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Sep 2021 08:22:57 -0700 (PDT) Subject: Re: [PULL 14/14] hw/arm/aspeed: Add Fuji machine type To: Peter Maydell , Joel Stanley References: <20210913161304.3805652-1-clg@kaod.org> <20210913161304.3805652-15-clg@kaod.org> <88c26520-6b87-e7a2-ac78-c1c92477c814@kaod.org> From: Richard Henderson Message-ID: <1949e204-1bce-f15b-553b-1b42b41e3e08@linaro.org> Date: Tue, 14 Sep 2021 08:22:55 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::1036; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1036.google.com X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 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=-1.969, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Jeffery , "qemu-arm@nongnu.org" , "qemu-devel@nongnu.org" , Peter Delevoryas , =?UTF-8?Q?C=c3=a9dric_Le_Goate?= =?UTF-8?Q?r?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 9/14/21 5:26 AM, Peter Maydell wrote: > (2) RAM blocks should have a length that fits inside a > signed 32-bit type on 32-bit hosts (at least I assume this > is where the 2047MB limit is coming from; in theory this ought > to be improveable but auditing the code for mishandling of > RAMblock sizes to ensure we weren't accidentally stuffing > their size into a signed 'long' somewhere would be kind > of painful) Recalling that the win64 abi model is p64, i.e. 'long' is still 32-bit while pointers are 64-bit, how close do we think we are to this being fixed already? > Even if we did fix (2) we'd need to compromise on (3) > sometimes still -- if a board has 4GB of RAM that's > not going to fit in 32 bits regardless. But we would be > able to let boards with 2GB have 2GB. I'm not opposed to deprecating 32-bit hosts... ;-) r~