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Message-Id: <1425575884-2574-12-git-send-email-aarcange@redhat.com>
Date: Thu, 5 Mar 2015 18:17:54 +0100
From: Andrea Arcangeli <aarcange@...hat.com>
To: qemu-devel@...gnu.org, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-api@...r.kernel.org,
Android Kernel Team <kernel-team@...roid.com>
Cc: "Kirill A. Shutemov" <kirill@...temov.name>,
Pavel Emelyanov <xemul@...allels.com>,
Sanidhya Kashyap <sanidhya.gatech@...il.com>,
zhang.zhanghailiang@...wei.com,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andres Lagar-Cavilla <andreslc@...gle.com>,
Dave Hansen <dave@...1.net>,
Paolo Bonzini <pbonzini@...hat.com>,
Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
Andy Lutomirski <luto@...capital.net>,
Andrew Morton <akpm@...ux-foundation.org>,
Sasha Levin <sasha.levin@...cle.com>,
Hugh Dickins <hughd@...gle.com>,
Peter Feiner <pfeiner@...gle.com>,
"Dr. David Alan Gilbert" <dgilbert@...hat.com>,
Christopher Covington <cov@...eaurora.org>,
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Michel Lespinasse <walken@...gle.com>,
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"Huangpeng (Peter)" <peter.huangpeng@...wei.com>,
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Wenchao Xia <wenchaoqemu@...il.com>,
Andrew Jones <drjones@...hat.com>,
Juan Quintela <quintela@...hat.com>
Subject: [PATCH 11/21] userfaultfd: buildsystem activation
This allows to select the userfaultfd during configuration to build it.
Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
---
fs/Makefile | 1 +
init/Kconfig | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/fs/Makefile b/fs/Makefile
index a88ac48..ba8ab62 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES) += anon_inodes.o
obj-$(CONFIG_SIGNALFD) += signalfd.o
obj-$(CONFIG_TIMERFD) += timerfd.o
obj-$(CONFIG_EVENTFD) += eventfd.o
+obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
obj-$(CONFIG_AIO) += aio.o
obj-$(CONFIG_FS_DAX) += dax.o
obj-$(CONFIG_FILE_LOCKING) += locks.o
diff --git a/init/Kconfig b/init/Kconfig
index f5dbc6d..580dae7 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1550,6 +1550,17 @@ config ADVISE_SYSCALLS
applications use these syscalls, you can disable this option to save
space.
+config USERFAULTFD
+ bool "Enable userfaultfd() system call"
+ select ANON_INODES
+ default y
+ depends on MMU
+ help
+ Enable the userfaultfd() system call that allows to intercept and
+ handle page faults in userland.
+
+ If unsure, say Y.
+
config PCI_QUIRKS
default y
bool "Enable PCI quirk workarounds" if EXPERT
--
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