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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2025-02-26 03:03:25 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2025-02-26 03:03:25 +0300 |
| commit | 0b119045b79a672bc6d8f18641c60fc8ce1b4585 (patch) | |
| tree | 69c63ecfec55b9576c34dc742e0c38f46f8a317a /tools/bpf/bpftool/feature.c | |
| parent | 7f7573bd4f37d4edc168c5b5def0bc2a1951c657 (diff) | |
| parent | d082ecbc71e9e0bf49883ee4afd435a77a5101b6 (diff) | |
| download | linux-0b119045b79a672bc6d8f18641c60fc8ce1b4585.tar.xz | |
Merge tag 'v6.14-rc4' into next
Sync up with the mainline.
Diffstat (limited to 'tools/bpf/bpftool/feature.c')
| -rw-r--r-- | tools/bpf/bpftool/feature.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c index 4dbc4fcdf473..24fecdf8e430 100644 --- a/tools/bpf/bpftool/feature.c +++ b/tools/bpf/bpftool/feature.c @@ -885,6 +885,28 @@ probe_v3_isa_extension(const char *define_prefix, __u32 ifindex) "V3_ISA_EXTENSION"); } +/* + * Probe for the v4 instruction set extension introduced in commit 1f9a1ea821ff + * ("bpf: Support new sign-extension load insns"). + */ +static void +probe_v4_isa_extension(const char *define_prefix, __u32 ifindex) +{ + struct bpf_insn insns[5] = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_JMP32_IMM(BPF_JEQ, BPF_REG_0, 1, 1), + BPF_JMP32_A(1), + BPF_MOV64_IMM(BPF_REG_0, 1), + BPF_EXIT_INSN() + }; + + probe_misc_feature(insns, ARRAY_SIZE(insns), + define_prefix, ifindex, + "have_v4_isa_extension", + "ISA extension v4", + "V4_ISA_EXTENSION"); +} + static void section_system_config(enum probe_component target, const char *define_prefix) { @@ -1029,6 +1051,7 @@ static void section_misc(const char *define_prefix, __u32 ifindex) probe_bounded_loops(define_prefix, ifindex); probe_v2_isa_extension(define_prefix, ifindex); probe_v3_isa_extension(define_prefix, ifindex); + probe_v4_isa_extension(define_prefix, ifindex); print_end_section(); } |