On Thu, Jul 4, 2024 at 7:33 PM Puranjay Mohan <puran...@kernel.org> wrote: > > The arm64 bpf JIT currently supports attaching the trampoline to > functions with <= 8 arguments. This is because up to 8 arguments can be > passed in registers r0-r7. If there are more than 8 arguments then the > 9th and later arguments are passed on the stack, with SP pointing to the > first stacked argument. See aapcs64[1] for more details. > > Add the support of storing and restoring arguments passed on the stack > to the arm64 bpf trampoline. This will allow attaching the trampoline to > functions that take 12 arguments. > > [1] > https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst#parameter-passing > > Signed-off-by: Puranjay Mohan <puran...@kernel.org>
Please ignore this patch, it doesn't work correctly for tracing_struct selftest. Sorry for the noise. Thanks, Puranjay
