Re: [PATCH v3 2/5] LoongArch: BPF: Update the code to rename validate_code to validate_ctx.

[Chenghao Duan]

On Wed, Jul 16, 2025 at 07:55:46PM +0800, Hengqi Chen wrote:
> On Wed, Jul 9, 2025 at 1:50 PM Chenghao Duan <duanchenghao@xxxxxxxxxx> wrote:
> >
> > Update the code to rename validate_code to validate_ctx.
> > validate_code is used to check the validity of code.
> > validate_ctx is used to check both code validity and table entry
> > correctness.
> >
> 
> The commit message is awkward to read.
> Please describe the purpose of this change.
> * Rename the existing validate_code() to validate_ctx()
> * Factor out the code validation handling into a new helper validate_code()
> 
> The new validate_code() will be used in subsequent changes.
> 

Hi Hengqi,

Thank you very much for your suggestions. I will refer to your advice
to revise the commit message in Version V4.

Chenghao

> > Co-developed-by: George Guo <guodongtai@xxxxxxxxxx>
> > Signed-off-by: George Guo <guodongtai@xxxxxxxxxx>
> > Signed-off-by: Chenghao Duan <duanchenghao@xxxxxxxxxx>
> > ---
> >  arch/loongarch/net/bpf_jit.c | 10 +++++++++-
> >  1 file changed, 9 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c
> > index fa1500d4a..7032f11d3 100644
> > --- a/arch/loongarch/net/bpf_jit.c
> > +++ b/arch/loongarch/net/bpf_jit.c
> > @@ -1180,6 +1180,14 @@ static int validate_code(struct jit_ctx *ctx)
> >                         return -1;
> >         }
> >
> > +       return 0;
> > +}
> > +
> > +static int validate_ctx(struct jit_ctx *ctx)
> > +{
> > +       if (validate_code(ctx))
> > +               return -1;
> > +
> >         if (WARN_ON_ONCE(ctx->num_exentries != ctx->prog->aux->num_exentries))
> >                 return -1;
> >
> > @@ -1288,7 +1296,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
> >         build_epilogue(&ctx);
> >
> >         /* 3. Extra pass to validate JITed code */
> > -       if (validate_code(&ctx)) {
> > +       if (validate_ctx(&ctx)) {
> >                 bpf_jit_binary_free(header);
> >                 prog = orig_prog;
> >                 goto out_offset;
> > --
> > 2.43.0
> >