diff options
| author | David Daney <[email protected]> | 2017-03-14 14:21:43 -0700 |
|---|---|---|
| committer | Ralf Baechle <[email protected]> | 2017-04-10 11:56:05 +0200 |
| commit | 1ef0910cfd681f0bd0b81f8809935b2006e9cfb9 (patch) | |
| tree | 43072e680174b34ffbaf5afe592091b45a273111 /arch/mips/include/asm/pgalloc.h | |
| parent | 64b2dd3a8be3ec4e08fd5a3dab0620d9c6c398fe (diff) | |
MIPS: BPF: Quit clobbering callee saved registers in JIT code.
If bpf_needs_clear_a() returns true, only actually clear it if it is
ever used. If it is not used, we don't save and restore it, so the
clearing has the nasty side effect of clobbering caller state.
Also, don't emit stack pointer adjustment instructions if the
adjustment amount is zero.
Signed-off-by: David Daney <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Cc: Steven J. Hill <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/15745/
Signed-off-by: Ralf Baechle <[email protected]>
Diffstat (limited to 'arch/mips/include/asm/pgalloc.h')
0 files changed, 0 insertions, 0 deletions