[PATCH] loongarch: drop ranges for definition of ARCH_FORCE_MAX_ORDER

[PATCH] loongarch: drop ranges for definition of ARCH_FORCE_MAX_ORDER

[Mike Rapoport]

From: "Mike Rapoport (IBM)" <rppt@kernel.org>

LoongArch defines insane ranges for ARCH_FORCE_MAX_ORDER allowing
MAX_ORDER up to 63, which implies maximal contiguous allocation size of
2^63 pages.

Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a
simple integer with sensible defaults.

Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER
will be able to do so but they won't be mislead by the bogus ranges.

Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---

This applies to akpm/mm-unstable tree

 arch/loongarch/Kconfig | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 272a3a12c98d..e1e3a3828962 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -420,11 +420,8 @@ config NODES_SHIFT
 
 config ARCH_FORCE_MAX_ORDER
 	int "Maximum zone order"
-	range 13 63 if PAGE_SIZE_64KB
 	default "13" if PAGE_SIZE_64KB
-	range 11 63 if PAGE_SIZE_16KB
 	default "11" if PAGE_SIZE_16KB
-	range 10 63
 	default "10"
 	help
 	  The kernel memory allocator divides physically contiguous memory
-- 
2.35.1

Re: [PATCH] loongarch: drop ranges for definition of ARCH_FORCE_MAX_ORDER

[Kirill A. Shutemov]

On Wed, Mar 22, 2023 at 10:17:27AM +0200, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
> 
> LoongArch defines insane ranges for ARCH_FORCE_MAX_ORDER allowing
> MAX_ORDER up to 63, which implies maximal contiguous allocation size of
> 2^63 pages.
> 
> Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a
> simple integer with sensible defaults.
> 
> Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER
> will be able to do so but they won't be mislead by the bogus ranges.
> 
> Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

-- 
  Kiryl Shutsemau / Kirill A. Shutemov

Re: [PATCH] loongarch: drop ranges for definition of ARCH_FORCE_MAX_ORDER

[David Hildenbrand]

On 22.03.23 09:17, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
> 
> LoongArch defines insane ranges for ARCH_FORCE_MAX_ORDER allowing
> MAX_ORDER up to 63, which implies maximal contiguous allocation size of
> 2^63 pages.
> 
> Drop bogus definitions of ranges for ARCH_FORCE_MAX_ORDER and leave it a
> simple integer with sensible defaults.
> 
> Users that *really* need to change the value of ARCH_FORCE_MAX_ORDER
> will be able to do so but they won't be mislead by the bogus ranges.
> 
> Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
> ---
> 
> This applies to akpm/mm-unstable tree
> 
>   arch/loongarch/Kconfig | 3 ---
>   1 file changed, 3 deletions(-)
> 
> diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
> index 272a3a12c98d..e1e3a3828962 100644
> --- a/arch/loongarch/Kconfig
> +++ b/arch/loongarch/Kconfig
> @@ -420,11 +420,8 @@ config NODES_SHIFT
>   
>   config ARCH_FORCE_MAX_ORDER
>   	int "Maximum zone order"
> -	range 13 63 if PAGE_SIZE_64KB
>   	default "13" if PAGE_SIZE_64KB
> -	range 11 63 if PAGE_SIZE_16KB
>   	default "11" if PAGE_SIZE_16KB
> -	range 10 63
>   	default "10"
>   	help
>   	  The kernel memory allocator divides physically contiguous memory

Reviewed-by: David Hildenbrand <david@redhat.com>

-- 
Thanks,

David / dhildenb