netdev - Re: [PATCH bpf-next] libbpf: Fix register naming in PT

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Date:   Wed, 13 May 2020 11:13:53 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Sumanth Korikkar <sumanthk@...ux.ibm.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Ilya Leoshkevich <iii@...ux.ibm.com>, jwi@...ux.ibm.com,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>
Subject: Re: [PATCH bpf-next] libbpf: Fix register naming in PT_REGS s390 macros

On Wed, May 13, 2020 at 8:45 AM Sumanth Korikkar <sumanthk@...ux.ibm.com> wrote:
>
> Fix register naming in PT_REGS s390 macros
>
> Fixes: b8ebce86ffe6 ("libbpf: Provide CO-RE variants of PT_REGS macros")
> Reviewed-by: Julian Wiedmann <jwi@...ux.ibm.com>
> Signed-off-by: Sumanth Korikkar <sumanthk@...ux.ibm.com>
> ---

Great, thanks for catching this!

Acked-by: Andrii Nakryiko <andriin@...com>

>  tools/lib/bpf/bpf_tracing.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
> index f3f3c3fb98cb..48a9c7c69ef1 100644
> --- a/tools/lib/bpf/bpf_tracing.h
> +++ b/tools/lib/bpf/bpf_tracing.h
> @@ -148,11 +148,11 @@ struct pt_regs;
>  #define PT_REGS_PARM3_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[4])
>  #define PT_REGS_PARM4_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[5])
>  #define PT_REGS_PARM5_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[6])
> -#define PT_REGS_RET_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), grps[14])
> +#define PT_REGS_RET_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[14])
>  #define PT_REGS_FP_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[11])
>  #define PT_REGS_RC_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[2])
>  #define PT_REGS_SP_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), gprs[15])
> -#define PT_REGS_IP_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), pdw.addr)
> +#define PT_REGS_IP_CORE(x) BPF_CORE_READ((PT_REGS_S390 *)(x), psw.addr)
>
>  #elif defined(bpf_target_arm)
>
> --
> 2.17.1
>