[PATCH 4.14 0/3] powerpc/bpf: Various fixes

This is a backport of the remaining patches from the below series: https://lore.kernel.org/all/cover.1633464148.git.naveen.n.rao@linux.vnet.ibm...

Kindly apply to the longterm tree for v4.14

Thanks, Naveen

Naveen N. Rao (3): powerpc/lib: Add helper to check if offset is within conditional branch range powerpc/bpf: Validate branch ranges powerpc/bpf: Fix BPF_SUB when imm == 0x80000000

arch/powerpc/include/asm/code-patching.h | 1 + arch/powerpc/lib/code-patching.c | 7 ++++- arch/powerpc/net/bpf_jit.h | 33 +++++++++++++-------- arch/powerpc/net/bpf_jit_comp64.c | 37 +++++++++++++++--------- 4 files changed, 52 insertions(+), 26 deletions(-)

base-commit: 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e