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bpf: Introduce BPF nospec instruction for mitigating Spectre v4
[linux-2.6-microblaze.git]
/
arch
/
sparc
/
net
/
bpf_jit_comp_64.c
diff --git
a/arch/sparc/net/bpf_jit_comp_64.c
b/arch/sparc/net/bpf_jit_comp_64.c
index
4b8d3c6
..
9a2f20c
100644
(file)
--- a/
arch/sparc/net/bpf_jit_comp_64.c
+++ b/
arch/sparc/net/bpf_jit_comp_64.c
@@
-1287,6
+1287,9
@@
static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
return 1;
break;
}
+ /* speculation barrier */
+ case BPF_ST | BPF_NOSPEC:
+ break;
/* ST: *(size *)(dst + off) = imm */
case BPF_ST | BPF_MEM | BPF_W:
case BPF_ST | BPF_MEM | BPF_H: