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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-09 08:12:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-09 08:12:09 +0200 |
| commit | 73e19de7b79a2f26f0b370cc071728cede1ab3a0 (patch) | |
| tree | 28fe55f0fa10e2ee4d30304b378c68288bf92d88 /arch/arm64/net/bpf_jit_comp.c | |
| parent | 548011957d1d72e0b662300c8b32b81d593b796e (diff) | |
| parent | 36a21d51725af2ce0700c6ebcb6b9594aac658a6 (diff) | |
Merge 5.14-rc5 into usb-next
We need the usb fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/arm64/net/bpf_jit_comp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index dccf98a37283..41c23f474ea6 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -823,6 +823,19 @@ emit_cond_jmp: return ret; break; + /* speculation barrier */ + case BPF_ST | BPF_NOSPEC: + /* + * Nothing required here. + * + * In case of arm64, we rely on the firmware mitigation of + * Speculative Store Bypass as controlled via the ssbd kernel + * parameter. Whenever the mitigation is enabled, it works + * for all of the kernel code with no need to provide any + * additional instructions. + */ + break; + /* ST: *(size *)(dst + off) = imm */ case BPF_ST | BPF_MEM | BPF_W: case BPF_ST | BPF_MEM | BPF_H: |