On Wed, Sep 4, 2019 at 8:33 AM Joel Fernandes <j...@joelfernandes.org> wrote: > > On Wed, Sep 04, 2019 at 08:26:52AM -0700, Alexei Starovoitov wrote: > > On Wed, Sep 4, 2019 at 6:14 AM Joel Fernandes <j...@joelfernandes.org> > > wrote: > > > > > > True. However, for kprobes-based BPF program - it does check for kernel > > > version to ensure that the BPF program is built against the right kernel > > > version (in order to ensure the program is built against the right set of > > > kernel headers). If it is not, then BPF refuses to load the program. > > > > This is not true anymore. Users found few ways to workaround that check > > in practice. It became useless and it was deleted some time ago. > > Wow, Ok! Interesting!
the other part of your email says about kernel header requirement. This is not true any more as well :) BTF relocations are already supported by the kernel, llvm, libbpf, bpftool, pahole. We'll be posting sample code soon.
