| Message ID | 1645240502-13398-2-git-send-email-yangtiezhu@loongson.cn (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | BPF |
| Headers | show |
| Series | Modify BPF_JIT_ALWAYS_ON and BPF_JIT_DEFAULT_ON | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Clearly marked for bpf-next |
| netdev/fixes_present | success | Fixes tag not required for -next series |
| netdev/subject_prefix | success | Link |
| netdev/cover_letter | success | Series has a cover letter |
| netdev/patch_count | success | Link |
| netdev/header_inline | success | No static functions without inline keyword in header files |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/cc_maintainers | success | CCed 10 of 10 maintainers |
| netdev/build_clang | success | Errors and warnings before: 0 this patch: 0 |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Signed-off-by tag matches author and committer |
| netdev/verify_fixes | success | No Fixes tag |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 10 lines checked |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/source_inline | success | Was 0 now: 0 |
| bpf/vmtest-bpf-next-PR | success | PR summary |
| bpf/vmtest-bpf-next | success | VM_Test |
On Fri, Feb 18, 2022 at 7:15 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote: > > When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable > is permanently set to 1 and setting any other value than that will return > in failure. > > Add the above description in the help text of config BPF_JIT_ALWAYS_ON, and > then we can distinguish between BPF_JIT_ALWAYS_ON and BPF_JIT_DEFAULT_ON. > > Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> > --- > kernel/bpf/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig > index d24d518..cbf3f65 100644 > --- a/kernel/bpf/Kconfig > +++ b/kernel/bpf/Kconfig > @@ -58,6 +58,10 @@ config BPF_JIT_ALWAYS_ON > Enables BPF JIT and removes BPF interpreter to avoid speculative > execution of BPF instructions by the interpreter. > > + When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable > + is permanently set to 1 and setting any other value than that will return > + in failure. nit: "return failure" (no "in"). Other than this, Acked-by: Song Liu <songliubraving@fb.com> > + > config BPF_JIT_DEFAULT_ON > def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON > depends on HAVE_EBPF_JIT && BPF_JIT > -- > 2.1.0 >
diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig index d24d518..cbf3f65 100644 --- a/kernel/bpf/Kconfig +++ b/kernel/bpf/Kconfig @@ -58,6 +58,10 @@ config BPF_JIT_ALWAYS_ON Enables BPF JIT and removes BPF interpreter to avoid speculative execution of BPF instructions by the interpreter. + When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable + is permanently set to 1 and setting any other value than that will return + in failure. + config BPF_JIT_DEFAULT_ON def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON depends on HAVE_EBPF_JIT && BPF_JIT
When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable is permanently set to 1 and setting any other value than that will return in failure. Add the above description in the help text of config BPF_JIT_ALWAYS_ON, and then we can distinguish between BPF_JIT_ALWAYS_ON and BPF_JIT_DEFAULT_ON. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> --- kernel/bpf/Kconfig | 4 ++++ 1 file changed, 4 insertions(+)