Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1435089AbdDZGxB (ORCPT ); Wed, 26 Apr 2017 02:53:01 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:33350 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1433203AbdDZGwx (ORCPT ); Wed, 26 Apr 2017 02:52:53 -0400 Subject: Re: [PATCH 2/5] ioctl_userfaultfd.2: describe memory types that can be used from 4.11 To: Mike Rapoport References: <1493137748-32452-1-git-send-email-rppt@linux.vnet.ibm.com> <1493137748-32452-3-git-send-email-rppt@linux.vnet.ibm.com> Cc: mtk.manpages@gmail.com, Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-man@vger.kernel.org From: "Michael Kerrisk (man-pages)" Message-ID: Date: Wed, 26 Apr 2017 08:52:50 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <1493137748-32452-3-git-send-email-rppt@linux.vnet.ibm.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1137 Lines: 42 On 04/25/2017 06:29 PM, Mike Rapoport wrote: > Signed-off-by: Mike Rapoport Thanks, Mike. Applied. Cheers, Michael > --- > man2/ioctl_userfaultfd.2 | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 > index 66fbfdc..78abc4d 100644 > --- a/man2/ioctl_userfaultfd.2 > +++ b/man2/ioctl_userfaultfd.2 > @@ -169,11 +169,15 @@ field was not zero. > (Since Linux 4.3.) > Register a memory address range with the userfaultfd object. > The pages in the range must be "compatible". > -In the current implementation, > -.\" According to Mike Rapoport, this will change in Linux 4.11. > + > +Up to Linux kernel 4.11, > only private anonymous ranges are compatible for registering with > .BR UFFDIO_REGISTER . > > +Since Linux 4.11, > +hugetlbfs and shared memory ranges are also compatible with > +.BR UFFDIO_REGISTER . > + > The > .I argp > argument is a pointer to a > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/