From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Mike Rapoport <rppt@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Huacai Chen <chenhuacai@kernel.org>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
WANG Xuerui <kernel@xen0n.name>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-mips@vger.kernel.org
Subject: Re: [PATCH] mips: drop ranges for definition of ARCH_FORCE_MAX_ORDER
Date: Wed, 22 Mar 2023 09:59:53 +0100 [thread overview]
Message-ID: <20230322085953.GA3910@alpha.franken.de> (raw)
In-Reply-To: <20230322081520.2516226-1-rppt@kernel.org>
On Wed, Mar 22, 2023 at 10:15:20AM +0200, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
>
> MIPS 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>
> ---
> arch/mips/Kconfig | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index 3e8b765b8c7b..a0f6e9d0a561 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -2137,13 +2137,9 @@ endchoice
>
> config ARCH_FORCE_MAX_ORDER
> int "Maximum zone order"
> - range 13 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
> default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
> - range 12 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
> default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
> - range 11 63 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
> default "11" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
> - range 0 63
> default "10"
> help
> The kernel memory allocator divides physically contiguous memory
> --
> 2.35.1
Thank you for cleaning this up.
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
next prev parent reply other threads:[~2023-03-22 9:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-22 8:15 Mike Rapoport
2023-03-22 8:24 ` Mike Rapoport
2023-03-22 8:59 ` Thomas Bogendoerfer [this message]
2023-03-22 10:02 ` Kirill A. Shutemov
2023-03-22 17:14 ` David Hildenbrand
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