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| author | Puranjay Mohan <puranjay12@gmail.com> | 2023-09-07 23:05:47 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-09-15 17:16:56 -0700 |
| commit | 71086041c2ba04aa436a4b2283c708345e72a0bb (patch) | |
| tree | 991c1dd9e23ea4d8dfdbbea90ab692ba0208dca9 /kernel | |
| parent | 5097faa559a6097de436bdff4027d036b5493d1a (diff) | |
| download | linux-stable-71086041c2ba04aa436a4b2283c708345e72a0bb.tar.gz linux-stable-71086041c2ba04aa436a4b2283c708345e72a0bb.tar.bz2 linux-stable-71086041c2ba04aa436a4b2283c708345e72a0bb.zip | |
arm32, bpf: add support for 64 bit division instruction
ARM32 doesn't have instructions to do 64-bit/64-bit divisions. So, to
implement the following instructions:
BPF_ALU64 | BPF_DIV
BPF_ALU64 | BPF_MOD
BPF_ALU64 | BPF_SDIV
BPF_ALU64 | BPF_SMOD
We implement the above instructions by doing function calls to div64_u64()
and div64_u64_rem() for unsigned division/mod and calls to div64_s64()
for signed division/mod.
Signed-off-by: Puranjay Mohan <puranjay12@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/20230907230550.1417590-7-puranjay12@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions