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[98.15.154.102]) by smtp.gmail.com with ESMTPSA id y18-20020ac85f52000000b002ed08a7dc8dsm1923995qta.13.2022.04.20.08.32.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Apr 2022 08:32:24 -0700 (PDT) Date: Wed, 20 Apr 2022 11:32:23 -0400 From: Johannes Weiner To: Peter Xu Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Alistair Popple , Mike Kravetz , Nadav Amit , Axel Rasmussen , Andrea Arcangeli , Mike Rapoport , Andrew Morton Subject: Re: [PATCH] mm/uffd: Hide PTE_MARKER option Message-ID: References: <20220419202531.27415-1-peterx@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220419202531.27415-1-peterx@redhat.com> X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 6A0CC4001B X-Rspam-User: Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=cmpxchg-org.20210112.gappssmtp.com header.s=20210112 header.b=FyeZeZSp; dmarc=pass (policy=none) header.from=cmpxchg.org; spf=pass (imf01.hostedemail.com: domain of hannes@cmpxchg.org designates 209.85.222.169 as permitted sender) smtp.mailfrom=hannes@cmpxchg.org X-Stat-Signature: nf9wgwxgds6duz7bfsbawwgshgdt8wwr X-HE-Tag: 1650468744-621459 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Apr 19, 2022 at 04:25:31PM -0400, Peter Xu wrote: > The PTE_MARKER option should not need to be exposed to the kernel builder, > keep it internal and remove the prompt so it won't be seen. > > Instead, make the PTE_MARKER_UFFD_WP option to explicitly choose PTE_MARKER > when necessary. > > While PTE_MARKER_UFFD_WP will still prompt to user, change the wording so > that it'll not mention PTE_MARKER at all but renaming it to "Userfaultfd > write protection support for shmem/hugetlbfs". > > Reported-by: Johannes Weiner > Signed-off-by: Peter Xu Acked-by: Johannes Weiner Thank you Peter