[PATCH v4 12/12] RISC-V: fix auipc-jalr addresses in patched alternatives

Lad, Prabhakar prabhakar.csengg at gmail.com
Sun Dec 11 12:49:16 PST 2022


On Wed, Dec 7, 2022 at 6:08 PM Heiko Stuebner <heiko at sntech.de> wrote:
>
> From: Heiko Stuebner <heiko.stuebner at vrull.eu>
>
> Alternatives live in a different section, so addresses used by call
> functions will point to wrong locations after the patch got applied.
>
> Similar to arm64, adjust the location to consider that offset.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner at vrull.eu>
> ---
>  arch/riscv/include/asm/alternative.h |  3 ++
>  arch/riscv/kernel/alternative.c      | 56 ++++++++++++++++++++++++++++
>  arch/riscv/kernel/cpufeature.c       |  5 ++-
>  3 files changed, 63 insertions(+), 1 deletion(-)
>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>

Cheers,
Prabhakar



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