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Mon, 22 Sep 2025 03:01:55 -0700 (PDT) Received: from [10.11.12.107] ([79.118.185.144]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3ee1095489asm18419549f8f.24.2025.09.22.03.01.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Sep 2025 03:01:54 -0700 (PDT) Message-ID: Date: Mon, 22 Sep 2025 11:01:51 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC][PATCH v3 15/16] kmemdump: Add Kinfo backend driver To: Eugen Hristev , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, andersson@kernel.org, pmladek@suse.com, rdunlap@infradead.org, corbet@lwn.net, david@redhat.com, mhocko@suse.com Cc: mukesh.ojha@oss.qualcomm.com, linux-arm-kernel@lists.infradead.org, linux-hardening@vger.kernel.org, jonechou@google.com, rostedt@goodmis.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org References: <20250912150855.2901211-1-eugen.hristev@linaro.org> <20250912150855.2901211-16-eugen.hristev@linaro.org> Content-Language: en-US From: Tudor Ambarus In-Reply-To: <20250912150855.2901211-16-eugen.hristev@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250922_030157_145976_83B6BADE X-CRM114-Status: GOOD ( 13.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 9/12/25 4:08 PM, Eugen Hristev wrote: > Add Kinfo backend driver. > This backend driver will select only regions of interest for the firmware, > and it copy those into a shared memory area that is supplied via OF. > The firmware is only interested in addresses for some symbols. > The list format is kinfo-compatible, with devices like Google Pixel phone. > > Signed-off-by: Eugen Hristev > --- > MAINTAINERS | 5 + > mm/kmemdump/Kconfig.debug | 13 ++ > mm/kmemdump/Makefile | 1 + > mm/kmemdump/kinfo.c | 293 ++++++++++++++++++++++++++++++++++++++ > 4 files changed, 312 insertions(+) > create mode 100644 mm/kmemdump/kinfo.c I tested the series on pixel 6 and I could see the backtraces correctly decoded by the bootloader: Tested-by: Tudor Ambarus Thanks!