Re: [PATCH 3/4] arch: define CONFIG_PAGE_SIZE_*KB on all architectures

[Stafford Horne]

On Mon, Feb 26, 2024 at 05:14:13PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> Most architectures only support a single hardcoded page size. In order
> to ensure that each one of these sets the corresponding Kconfig symbols,
> change over the PAGE_SHIFT definition to the common one and allow
> only the hardware page size to be selected.
> 
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  arch/alpha/Kconfig                 | 1 +
>  arch/alpha/include/asm/page.h      | 2 +-
>  arch/arm/Kconfig                   | 1 +
>  arch/arm/include/asm/page.h        | 2 +-
>  arch/csky/Kconfig                  | 1 +
>  arch/csky/include/asm/page.h       | 2 +-
>  arch/m68k/Kconfig                  | 3 +++
>  arch/m68k/Kconfig.cpu              | 2 ++
>  arch/m68k/include/asm/page.h       | 6 +-----
>  arch/microblaze/Kconfig            | 1 +
>  arch/microblaze/include/asm/page.h | 2 +-
>  arch/nios2/Kconfig                 | 1 +
>  arch/nios2/include/asm/page.h      | 2 +-
>  arch/openrisc/Kconfig              | 1 +
>  arch/openrisc/include/asm/page.h   | 2 +-
>  arch/riscv/Kconfig                 | 1 +
>  arch/riscv/include/asm/page.h      | 2 +-
>  arch/s390/Kconfig                  | 1 +
>  arch/s390/include/asm/page.h       | 2 +-
>  arch/sparc/Kconfig                 | 2 ++
>  arch/sparc/include/asm/page_32.h   | 2 +-
>  arch/sparc/include/asm/page_64.h   | 3 +--
>  arch/um/Kconfig                    | 1 +
>  arch/um/include/asm/page.h         | 2 +-
>  arch/x86/Kconfig                   | 1 +
>  arch/x86/include/asm/page_types.h  | 2 +-
>  arch/xtensa/Kconfig                | 1 +
>  arch/xtensa/include/asm/page.h     | 2 +-
>  28 files changed, 32 insertions(+), 19 deletions(-)
...
> diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
> index fd9bb76a610b..3586cda55bde 100644
> --- a/arch/openrisc/Kconfig
> +++ b/arch/openrisc/Kconfig
> @@ -25,6 +25,7 @@ config OPENRISC
>  	select GENERIC_CPU_DEVICES
>  	select HAVE_PCI
>  	select HAVE_UID16
> +	select HAVE_PAGE_SIZE_8KB
>  	select GENERIC_ATOMIC64
>  	select GENERIC_CLOCKEVENTS_BROADCAST
>  	select GENERIC_SMP_IDLE_THREAD
> diff --git a/arch/openrisc/include/asm/page.h b/arch/openrisc/include/asm/page.h
> index 44fc1fd56717..7925ce09ab5a 100644
> --- a/arch/openrisc/include/asm/page.h
> +++ b/arch/openrisc/include/asm/page.h
> @@ -18,7 +18,7 @@
>  
>  /* PAGE_SHIFT determines the page size */
>  
> -#define PAGE_SHIFT      13
> +#define PAGE_SHIFT      CONFIG_PAGE_SHIFT
>  #ifdef __ASSEMBLY__
>  #define PAGE_SIZE       (1 << PAGE_SHIFT)
>  #else

For the openrisc bits,

Acked-by: Stafford Horne <shorne@xxxxxxxxx>