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Message-Id: <166014901698.26898.12684147799083436971.git-patchwork-notify@kernel.org> Date: Wed, 10 Aug 2022 16:30:16 +0000 From: patchwork-bot+netdevbpf@...nel.org To: Artem Savkov <asavkov@...hat.com> Cc: ast@...nel.org, daniel@...earbox.net, andrii@...nel.org, bpf@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, aarcange@...hat.com, dvacek@...hat.com, olsajiri@...il.com, song@...nel.org, dxu@...uu.xyz, memxor@...il.com Subject: Re: [PATCH bpf-next v5 0/3] destructive bpf_kfuncs Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov <ast@...nel.org>: On Wed, 10 Aug 2022 08:59:02 +0200 you wrote: > eBPF is often used for kernel debugging, and one of the widely used and > powerful debugging techniques is post-mortem debugging with a full memory dump. > Triggering a panic at exactly the right moment allows the user to get such a > dump and thus a better view at the system's state. Right now the only way to > do this in BPF is to signal userspace to trigger kexec/panic. This is > suboptimal as going through userspace requires context changes and adds > significant delays taking system further away from "the right moment". On a > single-cpu system the situation is even worse because BPF program won't even be > able to block the thread of interest. > > [...] Here is the summary with links: - [bpf-next,v5,1/3] bpf: add destructive kfunc flag https://git.kernel.org/bpf/bpf-next/c/4dd48c6f1f83 - [bpf-next,v5,2/3] bpf: export crash_kexec() as destructive kfunc https://git.kernel.org/bpf/bpf-next/c/133790596406 - [bpf-next,v5,3/3] selftests/bpf: add destructive kfunc test https://git.kernel.org/bpf/bpf-next/c/e33894581675 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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