linux-kernel - Re: [PATCH v3 10/26] x86/numa: simplify numa

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Message-ID: <3073b605-8019-4f69-b35c-b5099e32d204@redhat.com>
Date: Tue, 6 Aug 2024 15:08:53 +0200
From: David Hildenbrand <david@...hat.com>
To: Mike Rapoport <rppt@...nel.org>, linux-kernel@...r.kernel.org
Cc: Alexander Gordeev <agordeev@...ux.ibm.com>,
 Andreas Larsson <andreas@...sler.com>,
 Andrew Morton <akpm@...ux-foundation.org>, Arnd Bergmann <arnd@...db.de>,
 Borislav Petkov <bp@...en8.de>, Catalin Marinas <catalin.marinas@....com>,
 Christophe Leroy <christophe.leroy@...roup.eu>,
 Dan Williams <dan.j.williams@...el.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 "David S. Miller" <davem@...emloft.net>, Davidlohr Bueso
 <dave@...olabs.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Heiko Carstens <hca@...ux.ibm.com>, Huacai Chen <chenhuacai@...nel.org>,
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 John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
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Subject: Re: [PATCH v3 10/26] x86/numa: simplify numa_distance allocation

On 01.08.24 08:08, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> 
> Allocation of numa_distance uses memblock_phys_alloc_range() to limit
> allocation to be below the last mapped page.
> 
> But NUMA initializaition runs after the direct map is populated and
> there is also code in setup_arch() that adjusts memblock limit to
> reflect how much memory is already mapped in the direct map.
> 
> Simplify the allocation of numa_distance and use plain memblock_alloc().
> 
> Signed-off-by: Mike Rapoport (Microsoft) <rppt@...nel.org>
> Tested-by: Zi Yan <ziy@...dia.com> # for x86_64 and arm64
> ---

Acked-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb