linux-kernel - Re: [PATCH V5 08/21] RISC-V: ACPI: Cache and retrieve the RINTC structure

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Message-ID: <ZFsTp/cbuPFauDui@sunil-laptop>
Date:   Wed, 10 May 2023 09:16:47 +0530
From:   Sunil V L <sunilvl@...tanamicro.com>
To:     Conor Dooley <conor@...nel.org>
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, Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Weili Qian <qianweili@...wei.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        Marc Zyngier <maz@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH V5 08/21] RISC-V: ACPI: Cache and retrieve the RINTC
 structure

Hi Conor,

On Tue, May 09, 2023 at 06:50:07PM +0100, Conor Dooley wrote:
> Hey Sunil,
> 
> On Mon, May 08, 2023 at 05:22:24PM +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>
> 
> From this patch until "RISC-V: Add ACPI initialization in
> setup_arch()" (which is 19/21), the series fails to build.
> 
> allmodconfig, clang-16:
> ../arch/riscv/include/asm/acpi.h:22:23: error: unknown type name 'acpi_physical_address'; did you mean 'efi_physical_addr_t'?
> ../arch/riscv/include/asm/acpi.h:22:51: error: unknown type name 'acpi_size'
> 
> rv32_defconfig, clang-16:
> arch/riscv/kernel/setup.c:297:7: error: use of undeclared identifier 'acpi_disabled'; did you mean '__cpu_disable'?
> arch/riscv/kernel/setup.c:297:7: warning: address of function '__cpu_disable' will always evaluate to 'true' [-Wpointer-bool-conversion]
>
> I ballsed up a toolchain upgrade to gcc-13, so the whole series is
> showing build issues on patchwork for the gcc configurations:
> https://patchwork.kernel.org/project/linux-riscv/list/?series=745787
> 
> However, I suspect that the same patches that fail for clang-16 will
> fail for gcc-13 too, once I have fixed that!
> 
My bad. It is a commit order issue. Let me fix it.

Thanks!
Sunil