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Sat, 23 Oct 2021 13:09:14 -0700 (PDT) Subject: Re: [PATCH 15/33] target/ppc: Implement Vector Insert from GPR using GPR index insns To: BALATON Zoltan References: <20211021194547.672988-1-matheus.ferst@eldorado.org.br> <20211021194547.672988-16-matheus.ferst@eldorado.org.br> <0581a10f-1411-a174-5869-4fe0999132f3@linaro.org> From: Richard Henderson Message-ID: <8abd1ed7-a636-def4-41c2-a80d4f80c7da@linaro.org> Date: Sat, 23 Oct 2021 13:09:12 -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::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.google.com X-Spam_score_int: -38 X-Spam_score: -3.9 X-Spam_bar: --- X-Spam_report: (-3.9 / 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=-1.781, 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: lucas.castro@eldorado.org.br, qemu-devel@nongnu.org, groug@kaod.org, luis.pires@eldorado.org.br, qemu-ppc@nongnu.org, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 10/23/21 1:02 PM, BALATON Zoltan wrote: > So may question was not if it's possible but if having target_ulong different from what we > had in qemu-system-ppc could cause any problems? I have no experience running 32-bit > guests with qemu-system-ppc64 but previously when this came up one difference pointed out > was that target_ulong would change if I remember the discussion correctly, but nobody now > if that could be a problem. It shouldn't be a problem. We take care of NARROW_MODE, so that you can boot a ppc64 guest kernel, and then run ppc32 user binaries under that. If you do find a bug under those conditions, report it. r~