Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes: > Hi! > > Even thought the __attribute__((patchable_function_entry())) solution to the > BPF dispatcher woes works, it turns out to not be supported by the whole range > of ageing compilers we support. Specifically this attribute seems to be GCC-8 > and later. > > This is another approach -- using static_call() to rewrite the dispatcher > function. I've compile tested this on: > > x86_64 (inline static-call support) > i386 (out-of-line static-call support) > aargh64 (no static-call support) > > A previous version was tested and found working by Bjorn. > > It is split in two patches; first reverting the current approach and then > introducing the new for ease of review. Took it for a spin on x86_64/KVM. For the series: Acked-by: Björn Töpel <bjorn@xxxxxxxxxx> Tested-by: Björn Töpel <bjorn@xxxxxxxxxx>
