diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2019-06-13 00:21:40 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:55:33 +0200 |
| commit | e90a7ecde5f361a7044e169fe6000036ceb69794 (patch) | |
| tree | 6bd416e1dd3588c65b93dfe3f253c5e2b4c7f55e /arch/powerpc/include | |
| parent | a97e26569b454c4243eb225d61d08751fe39c024 (diff) | |
powerpc/bpf: use unsigned division instruction for 64-bit operations
commit 758f2046ea040773ae8ea7f72dd3bbd8fa984501 upstream.
BPF_ALU64 div/mod operations are currently using signed division, unlike
BPF_ALU32 operations. Fix the same. DIV64 and MOD64 overflow tests pass
with this fix.
Fixes: 156d0e290e969c ("powerpc/ebpf/jit: Implement JIT compiler for extended BPF")
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 48e8f1f14872..b7067590f15c 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -261,6 +261,7 @@ #define PPC_INST_MULLI 0x1c000000 #define PPC_INST_DIVWU 0x7c000396 #define PPC_INST_DIVD 0x7c0003d2 +#define PPC_INST_DIVDU 0x7c000392 #define PPC_INST_RLWINM 0x54000000 #define PPC_INST_RLWIMI 0x50000000 #define PPC_INST_RLDICL 0x78000000 |