linux-kernel - Re: [PATCH v3 16/16] mm/mmap: Move may_expand_vm() check in mmap

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Message-ID: <a43ea116-770e-4711-946c-8f278ac6241a@intel.com>
Date: Tue, 9 Jul 2024 11:13:12 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, linux-mm@...ck.org,
 Andrew Morton <akpm@...ux-foundation.org>,
 Suren Baghdasaryan <surenb@...gle.com>, Vlastimil Babka <vbabka@...e.cz>,
 Lorenzo Stoakes <lstoakes@...il.com>, Matthew Wilcox <willy@...radead.org>,
 sidhartha.kumar@...cle.com, "Paul E . McKenney" <paulmck@...nel.org>,
 Bert Karwatzki <spasswolf@....de>, Jiri Olsa <olsajiri@...il.com>,
 linux-kernel@...r.kernel.org, Kees Cook <kees@...nel.org>
Subject: Re: [PATCH v3 16/16] mm/mmap: Move may_expand_vm() check in
 mmap_region()

On 7/9/24 07:52, Liam R. Howlett wrote:
...
> - The arch_unmap() call doesn't need to be that early anymore anyways
>   (mpx was dropped by Dave in 2020 git id ccaaaf6fe5a5).

Yep.  MPX is long gone and x86 doesn't do anything with arch_unmap() any
more.  Moving it around won't affect x86 at all.