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Revert "Revert "bpf: Use NOP_ATOMIC5 instead of emit_nops(&prog, 5) for BPF_TRAMP_F_CALL_ORIG""

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This reverts commit 21e2297dae as the
kabi can be updated at this point in time.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibd3111ca2a9071ae96a33c39428df927cc41d24a
This commit is contained in:
Greg Kroah-Hartman
2021-04-09 14:28:45 +02:00
committed by Todd Kjos
parent b16bfd6279
commit e094831fec
1 changed files with 2 additions and 1 deletions
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3
arch/x86/net/bpf_jit_comp.c
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@@ -1811,7 +1811,8 @@ int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *image, void *i
/* remember return value in a stack for bpf prog to access */
emit_stx(&prog, BPF_DW, BPF_REG_FP, BPF_REG_0, -8);
im->ip_after_call = prog;
emit_nops(&prog, 5);
memcpy(prog, ideal_nops[NOP_ATOMIC5], X86_PATCH_SIZE);
prog += X86_PATCH_SIZE;
}
if (fmod_ret->nr_progs) {