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Mon, 14 Dec 2020 09:08:31 -0800 (PST) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id c81sm33646864wmd.6.2020.12.14.09.08.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Dec 2020 09:08:29 -0800 (PST) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 079F91FF7E; Mon, 14 Dec 2020 17:08:29 +0000 (GMT) References: <20201214153012.12723-1-alex.bennee@linaro.org> <20201214153012.12723-3-alex.bennee@linaro.org> User-agent: mu4e 1.5.7; emacs 28.0.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Peter Maydell Subject: Re: [PATCH v1 2/6] configure: gate our use of GDB to 8.3.1 or above Date: Mon, 14 Dec 2020 17:05:56 +0000 In-reply-to: Message-ID: <87r1nstiwj.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::341; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x341.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, 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: QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Peter Maydell writes: > On Mon, 14 Dec 2020 at 15:36, Alex Benn=C3=A9e w= rote: >> >> Certain earlier versions of GDB have (possibly distro) derived issues >> when running against multiarch guests. Also given the problem of >> clashing ports it is preferable to use socket comms rather than TCP >> ports for testing. > > What's a "multiarch guest" ? I guess non-native guest would be another way of saying it. There is some hoop jumping to deal with the fact that some arches package up a fully featured multiarch aware gdb and some package up the multiarch one as a separate gdb-multiarch package. > Incidentally I think the problem I have been running into > with the Ubuntu gdb 8.1 is that it doesn't support registers > larger than 64 bytes, and if AArch64 QEMU is emulating SVE > then it tries to expose registers bigger than that to the > gdbstub. So this is a missing patch from Ubuntu's gdb? We could just peg the sha1 test to cortex-a57 - your are likely not getting the SVE tests running unless you have the compilers to build them (or using docker). > > thanks > -- PMM --=20 Alex Benn=C3=A9e