linux-kernel - Re: [PATCH v2 3/3] cma: move memory allocation to a helper function

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Message-ID: <aGbR7Y_TRpxooGjA@localhost.localdomain>
Date: Thu, 3 Jul 2025 20:54:37 +0200
From: Oscar Salvador <osalvador@...e.de>
To: Mike Rapoport <rppt@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Alexandre Ghiti <alexghiti@...osinc.com>,
	David Hildenbrand <david@...hat.com>,
	Pratyush Yadav <ptyadav@...zon.de>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH v2 3/3] cma: move memory allocation to a helper function

On Thu, Jul 03, 2025 at 09:47:11PM +0300, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> 
> __cma_declare_contiguous_nid() tries to allocate memory in several ways:
> * on systems with 64 bit physical address and enough memory it first
>   attempts to allocate memory just above 4GiB
> * if that fails, on systems with HIGHMEM the next attempt is from high
>   memory
> * and at last, if none of the previous attempts succeeded, or was even
>   tried because of incompatible configuration, the memory is allocated
>   anywhere within specified limits.
> 
> Move all the allocation logic to a helper function to make these steps more
> obvious.
> 
> Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

Acked-by: Oscar Salvador <osalvador@...e.de>

Thanks Mike ;-)!

 

-- 
Oscar Salvador
SUSE Labs