Re: [PATCH v1 0/4] smaps / mm/gup: fix gup_can_follow_protnone fallout

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To: David Hildenbrand <david@xxxxxxxxxx>
Subject: Re: [PATCH v1 0/4] smaps / mm/gup: fix gup_can_follow_protnone fallout
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 31 Jul 2023 12:07:19 -0700
Cc: Peter Xu <peterx@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, liubo <liubo254@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Mel Gorman <mgorman@xxxxxxx>
In-reply-to: <a453d403-fc96-e4a0-71ee-c61d527e70da@redhat.com>

On Mon, 31 Jul 2023 at 12:00, David Hildenbrand <david@xxxxxxxxxx> wrote:
>
> So in the "!writable" case, we would always call
> get_user_pages_unlocked() and never honor NUMA faults.

Ok, so kvm doesn't just use the fast version. Oh well. It was an idea..

         Linus

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