linux-kernel - Re: [PATCH DO NOT REVIEW v4 4/7] riscv: errata: andes: Fix auipc-jalr addresses in patched alternatives

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Date:   Fri, 25 Nov 2022 10:10:19 +0000
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Guo Ren <guoren@...nel.org>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Jisheng Zhang <jszhang@...nel.org>,
        Atish Patra <atishp@...osinc.com>,
        Anup Patel <apatel@...tanamicro.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Philipp Tomsich <philipp.tomsich@...ll.eu>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-renesas-soc@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH DO NOT REVIEW v4 4/7] riscv: errata: andes: Fix auipc-jalr
 addresses in patched alternatives

Hi Guo,

On Fri, Nov 25, 2022 at 1:09 AM Guo Ren <guoren@...nel.org> wrote:
>
> On Fri, Nov 25, 2022 at 1:22 AM Prabhakar <prabhakar.csengg@...il.com> wrote:
> >
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > This patch is added just for building purpose, as patch [0] will export
> > this in its next version.
> >
> > https://patchwork.kernel.org/project/linux-riscv/patch/20221110164924.529386-6-heiko@sntech.de/
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > ---
> > Note, as Heiko will be exporting riscv_alternative_fix_auipc_jalr() function
> > so that it can be used other erratas Ive just included for compilation.
> > ---
> >  arch/riscv/errata/andes/errata.c | 71 ++++++++++++++++++++++++++++++++
> >  1 file changed, 71 insertions(+)
> >
> > diff --git a/arch/riscv/errata/andes/errata.c b/arch/riscv/errata/andes/errata.c
> > index ec3e052ca8c7..4061ad4983bc 100644
> > --- a/arch/riscv/errata/andes/errata.c
> > +++ b/arch/riscv/errata/andes/errata.c
> > @@ -13,9 +13,80 @@
> >  #include <asm/alternative.h>
> >  #include <asm/cacheflush.h>
> >  #include <asm/errata_list.h>
> > +#include <asm/parse_asm.h>
> >  #include <asm/patch.h>
> > +#include <asm/sbi.h>
> >  #include <asm/vendorid_list.h>
> >
> > +/* Copy of Heiko's code from patch [0]
> > + * [0] https://patchwork.kernel.org/project/linux-riscv/patch/20221110164924.529386-6-heiko@sntech.de/
> Move it to commit-msg. No link in the code.
>
This patch is *not* to be merged and is just included for compilation
purposes only.

Cheers,
Prabhakar