Date:   Fri, 3 Mar 2023 16:36:17 +0100
From:   Andrew Jones <ajones@ventanamicro.com>
To:     Sunil V L <sunilvl@ventanamicro.com>
Cc:     linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@kernel.org>,
        Len Brown <lenb@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Marc Zyngier <maz@kernel.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Anup Patel <apatel@ventanamicro.com>,
        Atish Patra <atishp@rivosinc.com>,
        'Conor Dooley ' <conor.dooley@microchip.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [PATCH V3 06/20] RISC-V: Add support to build the ACPI core
Message-ID: <20230303153617.ko4duynxjvixy3bf@orel>
References: <20230303133647.845095-1-sunilvl@ventanamicro.com>
 <20230303133647.845095-7-sunilvl@ventanamicro.com>
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In-Reply-To: <20230303133647.845095-7-sunilvl@ventanamicro.com>
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On Fri, Mar 03, 2023 at 07:06:33PM +0530, Sunil V L wrote:
> Enable ACPI core for RISC-V after adding architecture-specific
> interfaces and header files required to build the ACPI core.
> 
> 1) Couple of header files are required unconditionally by the ACPI
> core. Add empty acenv.h and cpu.h header files.
> 
> 2) If CONFIG_PCI is enabled, a few PCI related interfaces need to
> be provided by the architecture. Define dummy interfaces for now
> so that build succeeds. Actual implementation will be added when
> PCI support is added for ACPI along with external interrupt
> controller support.
> 
> 3) A few globals and memory mapping related functions specific
> to the architecture need to be provided.
> 
> Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>  arch/riscv/Kconfig             |  5 +++
>  arch/riscv/include/asm/acenv.h | 11 +++++
>  arch/riscv/include/asm/acpi.h  | 61 ++++++++++++++++++++++++++
>  arch/riscv/include/asm/cpu.h   |  8 ++++
>  arch/riscv/kernel/Makefile     |  2 +
>  arch/riscv/kernel/acpi.c       | 80 ++++++++++++++++++++++++++++++++++
>  6 files changed, 167 insertions(+)
>  create mode 100644 arch/riscv/include/asm/acenv.h
>  create mode 100644 arch/riscv/include/asm/acpi.h
>  create mode 100644 arch/riscv/include/asm/cpu.h
>  create mode 100644 arch/riscv/kernel/acpi.c
> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 71754eb32ee6..f3108c7e19d8 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -12,6 +12,8 @@ config 32BIT
>  
>  config RISCV
>  	def_bool y
> +	select ACPI_GENERIC_GSI if ACPI
> +	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
>  	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
>  	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
>  	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
> @@ -617,6 +619,7 @@ config EFI
>  	depends on OF && !XIP_KERNEL
>  	depends on MMU
>  	default y
> +	select ARCH_SUPPORTS_ACPI if 64BIT
>  	select EFI_GENERIC_STUB
>  	select EFI_PARAMS_FROM_FDT
>  	select EFI_RUNTIME_WRAPPERS
> @@ -720,3 +723,5 @@ source "drivers/cpufreq/Kconfig"
>  endmenu # "CPU Power Management"
>  
>  source "arch/riscv/kvm/Kconfig"
> +
> +source "drivers/acpi/Kconfig"

The above Kconfig hunks don't apply on the IPI improvement base. The
second hunk also looks weird with the select under the default.

Thanks,
drew