linux-kernel - Re: [PATCH 09/12] riscv: extable: add `type` and `data` fields

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Date:   Thu, 18 Nov 2021 15:21:55 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Jisheng Zhang <jszhang3@...l.ustc.edu.cn>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Björn Töpel <bjorn@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Tong Tiangen <tongtiangen@...wei.com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 09/12] riscv: extable: add `type` and `data` fields

On Thu, Nov 18, 2021 at 07:42:49PM +0800, Jisheng Zhang wrote:
> On Thu, 18 Nov 2021 19:26:05 +0800 Jisheng Zhang wrote:
> 
> > From: Jisheng Zhang <jszhang@...nel.org>
> > 
> > This is a riscv port of commit d6e2cc564775("arm64: extable: add `type`
> > and `data` fields").
> > 
> > We will add specialized handlers for fixups, the `type` field is for
> > fixup handler type, the `data` field is used to pass specific data to
> > each handler, for example register numbers.
> > 
> > Signed-off-by: Jisheng Zhang <jszhang@...nel.org>

> > diff --git a/scripts/sorttable.c b/scripts/sorttable.c
> > index 0c031e47a419..5b5472b543f5 100644
> > --- a/scripts/sorttable.c
> > +++ b/scripts/sorttable.c
> > @@ -376,9 +376,11 @@ static int do_file(char const *const fname, void *addr)
> >  	case EM_PARISC:
> >  	case EM_PPC:
> >  	case EM_PPC64:
> > -	case EM_RISCV:
> >  		custom_sort = sort_relative_table;
> >  		break;
> > +	case EM_RISCV:
> > +		custom_sort = arm64_sort_relative_table;
> 
> Hi Mark, Thomas,
> 
> x86 and arm64 version of sort_relative_table routine are the same, I want to
> unify them, and then use the common function for riscv, but I'm not sure
> which name is better. Could you please suggest?

I sent a patch last week which unifies them as
sort_relative_table_with_data():

  https://lore.kernel.org/linux-arm-kernel/20211108114220.32796-1-mark.rutland@arm.com/

Thomas, are you happy with that patch?

With your ack it could go via the riscv tree for v5.17 as a preparatory
cleanup in this series.

Maybe we could get it in as a cleanup for v5.16-rc{2,3} ?

Thanks,
Mark.