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([2602:ae:1598:4c01:b7fa:ce59:1445:805a]) by smtp.gmail.com with ESMTPSA id 17-20020a17090a199100b002535a337d45sm565547pji.3.2023.06.06.22.53.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Jun 2023 22:53:38 -0700 (PDT) Message-ID: <98d56274-c104-3ca5-1e03-b149c953c1c6@linaro.org> Date: Tue, 6 Jun 2023 22:53:37 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH 0/2] tcg/tci: Two regression fixes Content-Language: en-US From: Richard Henderson To: qemu-devel@nongnu.org Cc: sw@weilnetz.de References: <20230607054654.622010-1-richard.henderson@linaro.org> In-Reply-To: <20230607054654.622010-1-richard.henderson@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::329; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x329.google.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 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=-0.094, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 6/6/23 22:46, Richard Henderson wrote: > Two recent regressions, both related to recent tcg changes. > > Our CI does not test TCI with --enable-debug-tcg, which given timeout > constraints is probably correct, but in this case resulted in an > infinite loop on aarch64 multiarch/memory.c with FEAT_LSE2 enabled. To expand on that: with --enable-debug-tcg, assertions fire and catch the bug; without the assertions, the generated bytecode is incorrect, which leads to the loop. r~