Hi, On Wed, 15 Apr 2026, Song Liu wrote:
> Add a sample module that demonstrates how BPF struct_ops can work > together with kernel livepatch. The module livepatches > cmdline_proc_show() and delegates the output to a BPF struct_ops > callback. When no BPF program is attached, a fallback message is > shown; when a BPF struct_ops program is attached, it controls the > /proc/cmdline output via the bpf_klp_seq_write kfunc. > > This builds on the existing livepatch-sample.c pattern but shows how > livepatch and BPF struct_ops can be combined to make livepatched > behavior programmable from userspace. > > The module is built when both CONFIG_SAMPLE_LIVEPATCH and > CONFIG_BPF_JIT are enabled. > > Signed-off-by: Song Liu <[email protected]> Interesting. It does not make me comfortable to be honest. Is this something we want to advertise through samples? Sashiko has comments... https://sashiko.dev/#/patchset/20260416001628.2062468-1-song%40kernel.org Miroslav
