linux-kernel - Re: [PATCH V6 09/21] RISC-V: ACPI: Cache and retrieve the RINTC structure

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Message-ID: <20230523-7263e5220667fd82a462afc7@orel>
Date:   Tue, 23 May 2023 14:01:09 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Sunil V L <sunilvl@...tanamicro.com>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
        linux-crypto@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        llvm@...ts.linux.dev, Weili Qian <qianweili@...wei.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Tom Rix <trix@...hat.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Marc Zyngier <maz@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Mark Gross <markgross@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Maximilian Luz <luzmaximilian@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Nathan Chancellor <nathan@...nel.org>,
        Len Brown <lenb@...nel.org>
Subject: Re: [PATCH V6 09/21] RISC-V: ACPI: Cache and retrieve the RINTC
 structure

On Mon, May 15, 2023 at 11:19:16AM +0530, Sunil V L wrote:
> RINTC structures in the MADT provide mapping between the hartid
> and the CPU. This is required many times even at run time like
> cpuinfo. So, instead of parsing the ACPI table every time, cache
> the RINTC structures and provide a function to get the correct
> RINTC structure for a given cpu.
> 
> Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>  arch/riscv/include/asm/acpi.h | 10 ++++++++
>  arch/riscv/kernel/acpi.c      | 45 +++++++++++++++++++++++++++++++++++
>  arch/riscv/kernel/setup.c     |  4 ++++
>  3 files changed, 59 insertions(+)


Reviewed-by: Andrew Jones <ajones@...tanamicro.com>