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Wed, 22 Jul 2026 16:11:10 -0700 (PDT) Received: from [192.168.0.38] ([86.12.216.189]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47f85b9a5a2sm10721492f8f.7.2026.07.22.16.11.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Jul 2026 16:11:09 -0700 (PDT) Message-ID: Date: Thu, 23 Jul 2026 00:11:09 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/5] [PATCH 2/5] gdb: Improve SIGSEGV diagnostics for POE faults Content-Language: en-US To: Matthieu Longo , srinath.parvathaneni@arm.com, gdb-patches@sourceware.org Cc: guinevere@redhat.com, thiago.bauermann@linaro.org, Ezra.Sitorus@arm.com, simark@simark.ca References: <20260714201530.78374-1-srinath.parvathaneni@arm.com> <20260714201530.78374-3-srinath.parvathaneni@arm.com> <3ae1161e-bc58-4cc4-a71d-c12b5b62d611@gmail.com> <3407ccb1-ad39-4572-b439-b508a4f4ea0d@arm.com> From: Luis In-Reply-To: <3407ccb1-ad39-4572-b439-b508a4f4ea0d@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org On 22/07/2026 10:41, Matthieu Longo wrote: > On 21/07/2026 21:30, Luis wrote: >> On 14/07/2026 21:15, srinath.parvathaneni@arm.com wrote: >>> From: Srinath Parvathaneni >>> >>> diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c >>> index f11eccc1bc1..b8a02ab9972 100644 >>> --- a/gdb/aarch64-linux-tdep.c >>> +++ b/gdb/aarch64-linux-tdep.c >>>   @@ -2734,6 +2741,14 @@ aarch64_linux_report_signal_info (struct gdbarch *gdbarch, >>>         uiout->field_string ("logical-tag", hex_string (ltag)); >>>       } >>>       } >>> +  /* For POE SEGSEGV, show additional information.  */ >> >> Is this really supposed to be POE SEGSEGV or is it a typo? >> > > For now, in my knowledge, AARCH64_SEGV_PKUERR is only used for POE. > However, it will also be used soon for another upcoming feature. > I would recommend to either simply eliminate the comment, or make it more clear like > > /* For memory permission faults, e.g. due to a permission overlay > restriction when feature POE is enabled. */ > > Matthieu Sorry, I may not have been clear, but I was referring specifically to the SEGSEGV. Should it be SIGSEGV instead?