mirror_ubuntu-kernels/drivers/net/ethernet/netronome
Jiong Wang f036ebd9bf nfp: bpf: fix ALU32 high bits clearance bug
NFP BPF JIT compiler is doing a couple of small optimizations when jitting
ALU imm instructions, some of these optimizations could save code-gen, for
example:

  A & -1 =  A
  A |  0 =  A
  A ^  0 =  A

However, for ALU32, high 32-bit of the 64-bit register should still be
cleared according to ISA semantics.

Fixes: cd7df56ed3 ("nfp: add BPF to NFP code translator")
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-23 00:07:47 +01:00
..
nfp nfp: bpf: fix ALU32 high bits clearance bug 2019-02-23 00:07:47 +01:00
Kconfig nfp: abm: add initial active buffer management NIC skeleton 2018-05-23 14:26:18 -04:00
Makefile nfp: rename the driver and add new main file 2017-02-10 15:52:24 -05:00