Re: tools/bpf: Compilation issue on powerpc: unknown type name '__vector128'

Adding netdev and PowerPC maintainers JFYI.

On Sat, Oct 24, 2020 at 11:23:19AM +0300, Dmitry V. Levin wrote:

Hi,

On Sat, Oct 24, 2020 at 02:06:41AM +0300, Vitaly Chikunov wrote:

quoted

Hi,

Commit f143c11bb7b9 ("tools: bpf: Use local copy of headers including
uapi/linux/filter.h") introduces compilation issue on powerpc:
 
  builder@powerpc64le:~/linux$ make -C tools/bpf V=1
  make: Entering directory '/usr/src/linux/tools/bpf'
  gcc -Wall -O2 -D__EXPORTED_HEADERS__ -I/usr/src/linux/tools/include/uapi -I/usr/src/linux/tools/include -DDISASM_FOUR_ARGS_SIGNATURE -c -o bpf_dbg.o /usr/src/linux/tools/bpf/bpf_dbg.c
  In file included from /usr/include/asm/sigcontext.h:14,
		   from /usr/include/bits/sigcontext.h:30,
		   from /usr/include/signal.h:291,
		   from /usr/src/linux/tools/bpf/bpf_dbg.c:51:
  /usr/include/asm/elf.h:160:9: error: unknown type name '__vector128'
    160 | typedef __vector128 elf_vrreg_t;
	|         ^~~~~~~~~~~
  make: *** [Makefile:67: bpf_dbg.o] Error 1
  make: Leaving directory '/usr/src/linux/tools/bpf'

__vector128 is defined in arch/powerpc/include/uapi/asm/types.h;
while include/uapi/linux/types.h does #include <asm/types.h>,
tools/include/uapi/linux/types.h doesn't, resulting to this
compilation error.

This is too puzzling to fix portably.

Thanks,

-- 
ldv