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Date: Tue, 27 Feb 2024 08:41:16 +0100
From: Heiko Carstens <hca@linux.ibm.com>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
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Subject: Re: [PATCH 3/4] arch: define CONFIG_PAGE_SIZE_*KB on all
 architectures
Message-ID: <20240227074116.6127-A-hca@linux.ibm.com>
References: <20240226161414.2316610-1-arnd@kernel.org>
 <20240226161414.2316610-4-arnd@kernel.org>
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In-Reply-To: <20240226161414.2316610-4-arnd@kernel.org>

On Mon, Feb 26, 2024 at 05:14:13PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> 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@arndb.de>
> ---
..
>  arch/s390/Kconfig                  | 1 +
>  arch/s390/include/asm/page.h       | 2 +-
..
> diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> index fe565f3a3a91..b61c74c10050 100644
> --- a/arch/s390/Kconfig
> +++ b/arch/s390/Kconfig
> @@ -199,6 +199,7 @@ config S390
>  	select HAVE_MOD_ARCH_SPECIFIC
>  	select HAVE_NMI
>  	select HAVE_NOP_MCOUNT
> +	select HAVE_PAGE_SIZE_4KB
>  	select HAVE_PCI
>  	select HAVE_PERF_EVENTS
>  	select HAVE_PERF_REGS
> diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
> index 73b9c3bf377f..ded9548d11d9 100644
> --- a/arch/s390/include/asm/page.h
> +++ b/arch/s390/include/asm/page.h
> @@ -11,7 +11,7 @@
>  #include <linux/const.h>
>  #include <asm/types.h>
>  
> -#define _PAGE_SHIFT	12
> +#define _PAGE_SHIFT	CONFIG_PAGE_SHIFT

Acked-by: Heiko Carstens <hca@linux.ibm.com>