From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Hajime Tazaki <thehajime@gmail.com>,
linux-mm@kvack.org, geert@linux-m68k.org, daniel@thingy.jp,
Arnd Bergmann <arnd@arndb.de>, Jan Kara <jack@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
"Liam R. Howlett" <liam@infradead.org>,
Vlastimil Babka <vbabka@kernel.org>,
Jann Horn <jannh@google.com>, Pedro Falcato <pfalcato@suse.de>,
linux-fsdevel@vger.kernel.org
Subject: Re: [RFC PATCH 3/6] mm: nommu: fix an issue on map request to /dev/zero
Date: Thu, 13 Aug 2026 14:43:16 +0100 [thread overview]
Message-ID: <an3JiUfhRPe_X-kC@lucifer> (raw)
In-Reply-To: <an3G24JX-ZE9Obbt@lucifer>
On Thu, Aug 13, 2026 at 02:32:27PM +0100, Lorenzo Stoakes (ARM) wrote:
> I do agree with Greg however that nommu is something we should get rid of. See
> my other reply here.
Sorry this was an overreach - Greg didn't say that :)
I mean Greg asked if anybody uses nommu, the answer is yes, but the real
question I think is 'is anybody using a very recent kernel who couldn't either
use an older one or maintain a downstream kernel'.
And to that I think the answer is absolutely not.
And if the answer were yes - you must surely be a company with a product
(security concerns on a nommu system is a debatable concept) - and then you need
to put up or shut up IMO.
--
Cheers, Lorenzo
next prev parent reply other threads:[~2026-08-13 13:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 6:33 [RFC PATCH 0/6] fix nommu mmap and add nommu kselftests Hajime Tazaki
2026-08-13 6:33 ` [RFC PATCH 1/6] mm: nommu: fix do_mremap() to correctly update internal states Hajime Tazaki
2026-08-13 6:33 ` [RFC PATCH 2/6] mm: nommu: use vma_is_anonymous() to check if vmas are anonymous Hajime Tazaki
2026-08-13 6:33 ` [RFC PATCH 3/6] mm: nommu: fix an issue on map request to /dev/zero Hajime Tazaki
2026-08-13 12:19 ` Greg Kroah-Hartman
2026-08-13 12:43 ` Daniel Palmer
2026-08-13 13:29 ` Lorenzo Stoakes (ARM)
2026-08-13 13:51 ` Daniel Palmer
2026-08-13 13:58 ` Lorenzo Stoakes (ARM)
2026-08-13 14:06 ` Greg Kroah-Hartman
2026-08-13 14:02 ` Greg Kroah-Hartman
2026-08-13 14:10 ` Lorenzo Stoakes (ARM)
2026-08-13 13:22 ` Matthew Wilcox
2026-08-13 13:32 ` Lorenzo Stoakes (ARM)
2026-08-13 13:43 ` Lorenzo Stoakes (ARM) [this message]
2026-08-13 14:04 ` Greg Kroah-Hartman
2026-08-13 6:33 ` [RFC PATCH 4/6] selftests: fix build errors on alpine linux Hajime Tazaki
2026-08-13 6:34 ` [RFC PATCH 5/6] selftests: run tests on nommu architecture Hajime Tazaki
2026-08-13 6:34 ` [RFC PATCH 6/6] selftests/mm: add nommu mmap and mremap behavior tests Hajime Tazaki
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