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Date:   Tue, 3 Oct 2023 09:49:12 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Gregory Price <gourry.memverge@gmail.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org, arnd@arndb.de,
        Gregory Price <gregory.price@memverge.com>
Subject: Re: [PATCH] mm/migrate: fix do_pages_move for compat pointers
Message-Id: <20231003094912.08cf57998135446ef475dd19@linux-foundation.org>
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On Tue,  3 Oct 2023 10:48:56 -0400 Gregory Price <gourry.memverge@gmail.com> wrote:

> do_pages_move does not handle compat pointers for the page list.
> correctly.  Add in_compat_syscall check and appropriate get_user
> fetch when iterating the page list.

What are the userspace visible effects of this change?