diff options
| author | Andy Lutomirski <[email protected]> | 2021-01-20 21:09:51 -0800 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2021-01-29 12:27:47 +0100 |
| commit | 49200d17d27d5cc1aede2d1bb2a78dbfc1563e65 (patch) | |
| tree | 8f126191de040ce89b2800b4e4204fad8d666a64 /net/unix/unix_bpf.c | |
| parent | b0dc553cfc9d3bc2c7b8672b0b2fcf0edf0c3b6e (diff) | |
x86/fpu/64: Don't FNINIT in kernel_fpu_begin()
The remaining callers of kernel_fpu_begin() in 64-bit kernels don't use 387
instructions, so there's no need to sanitize the FPU state. Skip it to get
most of the performance we lost back.
Reported-by: Krzysztof Olędzki <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Link: https://lkml.kernel.org/r/57f8841ccbf9f3c25a23196c888f5f6ec5887577.1611205691.git.luto@kernel.org
Diffstat (limited to 'net/unix/unix_bpf.c')
0 files changed, 0 insertions, 0 deletions