All of lore.kernel.org
 help / color / mirror / Atom feed
From: Peter Xu <peterx@redhat.com>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Hugh Dickins <hughd@google.com>, Maya Gokhale <gokhale2@llnl.gov>,
	Jerome Glisse <jglisse@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	peterx@redhat.com, Martin Cracauer <cracauer@cons.org>,
	Denis Plotnikov <dplotnikov@virtuozzo.com>,
	Shaohua Li <shli@fb.com>, Andrea Arcangeli <aarcange@redhat.com>,
	Pavel Emelyanov <xemul@parallels.com>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Marty McFadden <mcfadden8@llnl.gov>,
	Mike Rapoport <rppt@linux.vnet.ibm.com>,
	Mel Gorman <mgorman@suse.de>,
	"Kirill A . Shutemov" <kirill@shutemov.name>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
	Rik van Riel <riel@redhat.com>
Subject: [PATCH RFC 09/24] userfaultfd: wp: enabled write protection in userfaultfd API
Date: Mon, 21 Jan 2019 15:57:07 +0800	[thread overview]
Message-ID: <20190121075722.7945-10-peterx@redhat.com> (raw)
In-Reply-To: <20190121075722.7945-1-peterx@redhat.com>

From: Shaohua Li <shli@fb.com>

Now it's safe to enable write protection in userfaultfd API

Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 include/uapi/linux/userfaultfd.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/userfaultfd.h b/include/uapi/linux/userfaultfd.h
index 11517f796275..9de61cd8e228 100644
--- a/include/uapi/linux/userfaultfd.h
+++ b/include/uapi/linux/userfaultfd.h
@@ -19,7 +19,8 @@
  * means the userland is reading).
  */
 #define UFFD_API ((__u64)0xAA)
-#define UFFD_API_FEATURES (UFFD_FEATURE_EVENT_FORK |		\
+#define UFFD_API_FEATURES (UFFD_FEATURE_PAGEFAULT_FLAG_WP |	\
+			   UFFD_FEATURE_EVENT_FORK |		\
 			   UFFD_FEATURE_EVENT_REMAP |		\
 			   UFFD_FEATURE_EVENT_REMOVE |	\
 			   UFFD_FEATURE_EVENT_UNMAP |		\
@@ -34,7 +35,8 @@
 #define UFFD_API_RANGE_IOCTLS			\
 	((__u64)1 << _UFFDIO_WAKE |		\
 	 (__u64)1 << _UFFDIO_COPY |		\
-	 (__u64)1 << _UFFDIO_ZEROPAGE)
+	 (__u64)1 << _UFFDIO_ZEROPAGE |		\
+	 (__u64)1 << _UFFDIO_WRITEPROTECT)
 #define UFFD_API_RANGE_IOCTLS_BASIC		\
 	((__u64)1 << _UFFDIO_WAKE |		\
 	 (__u64)1 << _UFFDIO_COPY)
-- 
2.17.1


  parent reply	other threads:[~2019-01-21  7:58 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-21  7:56 [PATCH RFC 00/24] userfaultfd: write protection support Peter Xu
2019-01-21  7:56 ` [PATCH RFC 01/24] mm: gup: rename "nonblocking" to "locked" where proper Peter Xu
2019-01-21 10:20   ` Mike Rapoport
2019-01-21  7:57 ` [PATCH RFC 02/24] mm: userfault: return VM_FAULT_RETRY on signals Peter Xu
2019-01-21 15:40   ` Jerome Glisse
2019-01-22  6:10     ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 03/24] mm: allow VM_FAULT_RETRY for multiple times Peter Xu
2019-01-21 15:55   ` Jerome Glisse
2019-01-22  8:22     ` Peter Xu
2019-01-22 16:53       ` Jerome Glisse
2019-01-23  2:12         ` Peter Xu
2019-01-23  2:39           ` Jerome Glisse
2019-01-24  5:45             ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 04/24] mm: gup: " Peter Xu
2019-01-21 16:24   ` Jerome Glisse
2019-01-24  7:05     ` Peter Xu
2019-01-24 15:34       ` Jerome Glisse
2019-01-25  2:49         ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 05/24] userfaultfd: wp: add helper for writeprotect check Peter Xu
2019-01-21 10:23   ` Mike Rapoport
2019-01-22  8:31     ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 06/24] userfaultfd: wp: support write protection for userfault vma range Peter Xu
2019-01-21 10:20   ` Mike Rapoport
2019-01-22  8:55     ` Peter Xu
2019-01-21 14:05   ` Jerome Glisse
2019-01-22  9:39     ` Peter Xu
2019-01-22 17:02       ` Jerome Glisse
2019-01-23  2:17         ` Peter Xu
2019-01-23  2:43           ` Jerome Glisse
2019-01-24  5:47             ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 07/24] userfaultfd: wp: add the writeprotect API to userfaultfd ioctl Peter Xu
2019-01-21 10:42   ` Mike Rapoport
2019-01-24  4:56     ` Peter Xu
2019-01-24  7:27       ` Mike Rapoport
2019-01-24  9:28         ` Peter Xu
2019-01-25  7:54           ` Mike Rapoport
2019-01-25 10:12             ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 08/24] userfaultfd: wp: hook userfault handler to write protection fault Peter Xu
2019-01-21  7:57 ` Peter Xu [this message]
2019-01-21  7:57 ` [PATCH RFC 10/24] userfaultfd: wp: add WP pagetable tracking to x86 Peter Xu
2019-01-21 15:09   ` Jerome Glisse
2019-01-24  5:16     ` Peter Xu
2019-01-24 15:40       ` Jerome Glisse
2019-01-25  3:30         ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 11/24] userfaultfd: wp: userfaultfd_pte/huge_pmd_wp() helpers Peter Xu
2019-01-21  7:57 ` [PATCH RFC 12/24] userfaultfd: wp: add UFFDIO_COPY_MODE_WP Peter Xu
2019-01-21  7:57 ` [PATCH RFC 13/24] mm: merge parameters for change_protection() Peter Xu
2019-01-21 13:54   ` Jerome Glisse
2019-01-24  5:22     ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 14/24] userfaultfd: wp: apply _PAGE_UFFD_WP bit Peter Xu
2019-01-21  7:57 ` [PATCH RFC 15/24] mm: export wp_page_copy() Peter Xu
2019-01-21  7:57 ` [PATCH RFC 16/24] userfaultfd: wp: handle COW properly for uffd-wp Peter Xu
2019-01-21  7:57 ` [PATCH RFC 17/24] userfaultfd: wp: drop _PAGE_UFFD_WP properly when fork Peter Xu
2019-01-21  7:57 ` [PATCH RFC 18/24] userfaultfd: wp: add pmd_swp_*uffd_wp() helpers Peter Xu
2019-01-21  7:57 ` [PATCH RFC 19/24] userfaultfd: wp: support swap and page migration Peter Xu
2019-01-21  7:57 ` [PATCH RFC 20/24] userfaultfd: wp: don't wake up when doing write protect Peter Xu
2019-01-21 11:10   ` Mike Rapoport
2019-01-24  5:36     ` Peter Xu
2019-01-21  7:57 ` [PATCH RFC 21/24] khugepaged: skip collapse if uffd-wp detected Peter Xu
2019-01-21  7:57 ` [PATCH RFC 22/24] userfaultfd: wp: UFFDIO_REGISTER_MODE_WP documentation update Peter Xu
2019-01-21  7:57 ` [PATCH RFC 23/24] userfaultfd: selftests: refactor statistics Peter Xu
2019-01-21  7:57 ` [PATCH RFC 24/24] userfaultfd: selftests: add write-protect test Peter Xu
2019-01-21 14:33 ` [PATCH RFC 00/24] userfaultfd: write protection support David Hildenbrand
2019-01-22  3:18   ` Peter Xu
2019-01-22  8:59     ` David Hildenbrand

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190121075722.7945-10-peterx@redhat.com \
    --to=peterx@redhat.com \
    --cc=aarcange@redhat.com \
    --cc=cracauer@cons.org \
    --cc=dgilbert@redhat.com \
    --cc=dplotnikov@virtuozzo.com \
    --cc=gokhale2@llnl.gov \
    --cc=hannes@cmpxchg.org \
    --cc=hughd@google.com \
    --cc=jglisse@redhat.com \
    --cc=kirill@shutemov.name \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mcfadden8@llnl.gov \
    --cc=mgorman@suse.de \
    --cc=mike.kravetz@oracle.com \
    --cc=riel@redhat.com \
    --cc=rppt@linux.vnet.ibm.com \
    --cc=shli@fb.com \
    --cc=xemul@parallels.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.