From: Oscar Salvador <osalvador@suse.de>
To: Mike Rapoport <rppt@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
David Hildenbrand <david@redhat.com>,
Pratyush Yadav <ptyadav@amazon.de>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH v2 3/3] cma: move memory allocation to a helper function
Date: Thu, 3 Jul 2025 20:54:37 +0200 [thread overview]
Message-ID: <aGbR7Y_TRpxooGjA@localhost.localdomain> (raw)
In-Reply-To: <20250703184711.3485940-4-rppt@kernel.org>
On Thu, Jul 03, 2025 at 09:47:11PM +0300, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@kernel.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@kernel.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
Thanks Mike ;-)!
--
Oscar Salvador
SUSE Labs
prev parent reply other threads:[~2025-07-03 18:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 18:47 [PATCH v2 0/3] cma: factor out allocation logic from __cma_declare_contiguous_nid Mike Rapoport
2025-07-03 18:47 ` [PATCH v2 1/3] cma: move __cma_declare_contiguous_nid() before its usage Mike Rapoport
2025-07-03 18:47 ` [PATCH v2 2/3] cma: split resrvation of fixed area into a helper function Mike Rapoport
2025-07-03 18:47 ` [PATCH v2 3/3] cma: move memory allocation to " Mike Rapoport
2025-07-03 18:52 ` David Hildenbrand
2025-07-03 18:54 ` Oscar Salvador [this message]
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