From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Subject: [PATCH 2/5] ioctl_userfaultfd.2: describe memory types that can be used from 4.11 Date: Tue, 25 Apr 2017 19:29:05 +0300 Message-ID: <1493137748-32452-3-git-send-email-rppt@linux.vnet.ibm.com> References: <1493137748-32452-1-git-send-email-rppt@linux.vnet.ibm.com> Return-path: In-Reply-To: <1493137748-32452-1-git-send-email-rppt@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org To: "Michael Kerrisk (man-pages)" Cc: Andrea Arcangeli , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-man@vger.kernel.org, Mike Rapoport List-Id: linux-man@vger.kernel.org Signed-off-by: Mike Rapoport --- 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 -- 1.9.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org