linux-kernel - Re: [PATCH 2/5] mm/hugetlb: Remove prepare_hugepage

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Message-ID: <aEw81libg2OQAiYc@localhost.localdomain>
Date: Fri, 13 Jun 2025 16:59:34 +0200
From: Oscar Salvador <osalvador@...e.de>
To: Peter Xu <peterx@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, kvm@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	Zi Yan <ziy@...dia.com>, Jason Gunthorpe <jgg@...dia.com>,
	Alex Mastro <amastro@...com>, David Hildenbrand <david@...hat.com>,
	Nico Pache <npache@...hat.com>, Huacai Chen <chenhuacai@...nel.org>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Muchun Song <muchun.song@...ux.dev>, loongarch@...ts.linux.dev,
	linux-mips@...r.kernel.org
Subject: Re: [PATCH 2/5] mm/hugetlb: Remove prepare_hugepage_range()

On Fri, Jun 13, 2025 at 09:41:08AM -0400, Peter Xu wrote:
> Only mips and loongarch implemented this API, however what it does was
> checking against stack overflow for either len or addr.  That's already
> done in arch's arch_get_unmapped_area*() functions, hence not needed.
> 
> It means the whole API is pretty much obsolete at least now, remove it
> completely.
> 
> Cc: Huacai Chen <chenhuacai@...nel.org>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Muchun Song <muchun.song@...ux.dev>
> Cc: Oscar Salvador <osalvador@...e.de>
> Cc: loongarch@...ts.linux.dev
> Cc: linux-mips@...r.kernel.org
> Signed-off-by: Peter Xu <peterx@...hat.com>

I think I forgot to clean these up when I unified the unmapped_area for
hugetlb.

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

Thanks Peter!
 

-- 
Oscar Salvador
SUSE Labs