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([2804:7f0:8283:20c3:e864:896a:f2c8:27a0]) by smtp.gmail.com with ESMTPSA id f22sm13728863qko.89.2020.07.03.03.52.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Jul 2020 03:52:37 -0700 (PDT) Subject: Re: [PATCH v2 0/4] arm64: Fix single-step handling To: Will Deacon , linux-arm-kernel@lists.infradead.org References: <20200702212618.17800-1-will@kernel.org> From: Luis Machado Message-ID: <598bb1fd-c475-53b6-ef6a-bb2838f4be25@linaro.org> Date: Fri, 3 Jul 2020 07:52:34 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200702212618.17800-1-will@kernel.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200703_065240_997278_046AF7F8 X-CRM114-Status: GOOD ( 16.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Keno Fischer , kernel-team@android.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Will, On 7/2/20 6:26 PM, Will Deacon wrote: > Hi all, > > This is version two of the patches I previously posted here: > > v1: https://lore.kernel.org/linux-arm-kernel/20200603151033.11512-1-will@kernel.org/ > > Thanks to Keno for a bunch of helpful feedback on that, which has led to > the following major changes for v2: > > - Use pseudo-step traps for both entering a signal handler and exiting a > system call. > > - Document our weird x7 behaviour with PTRACE_SYSCALL. > > It has to be said that I'm a bit nervous about these changes. I played > around with GDB and things seemed ok, but I would really appreciate it > if Luis could run the GDB testsuite with these changes applied. Thanks for working on this. I'll need some time to give this a go. I'll let you know what the results are. Do I only need to exercise the AArch64 state? Or would this impact AArch32 as well? Regards, Luis _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel