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[34.145.126.213]) by smtp.gmail.com with ESMTPSA id u13-20020a170902e80d00b001def0c700e2sm11892081plg.119.2024.03.20.17.05.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Mar 2024 17:05:04 -0700 (PDT) Date: Thu, 21 Mar 2024 00:05:01 +0000 From: Neill Kapron To: lsf-pc@lists.linux-foundation.org, bpf@vger.kernel.org Subject: [LSF/MM/BPF TOPIC] Implementing BPF_PROG_LOAD_FD Message-ID: Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hello, I am working on improving BPF support in Android and presented at LPC23 on the topic [1]. I would like to attend the LSM/MM/BPF Summit in May to continue the discussion. Unfortunately I was pulled off the work for the last quarter and missed the deadline for topic submissions. I would like to attend the summit to discuss the work I am planning for the rest of the year, specifically around implementing BPF_PROG_LOAD_FD. This mechanism would be analogous to finit_module, and would provide a way to support verified boot with BPF by enabling the kernel to load BPF programs from a verified filesystem. This requirement has been set by the Android security team before enabling other upstream BPF support. I understand that this is not a trivial task, and would like to get input on the best approach for a staged integration of this- starting with the basic framework, necessary libbpf additions, and test applications, followed by porting features provided by libbpf (like CO-RE) to the kernel. Thanks for your consideration, Neill Kapron [1] https://www.youtube.com/watch?v=UM_tnuZhmt8