From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161177AbbENRlV (ORCPT ); Thu, 14 May 2015 13:41:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44040 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933319AbbENRb1 (ORCPT ); Thu, 14 May 2015 13:31:27 -0400 From: Andrea Arcangeli To: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, linux-api@vger.kernel.org Cc: Pavel Emelyanov , Sanidhya Kashyap , zhang.zhanghailiang@huawei.com, Linus Torvalds , "Kirill A. Shutemov" , Andres Lagar-Cavilla , Dave Hansen , Paolo Bonzini , Rik van Riel , Mel Gorman , Andy Lutomirski , Hugh Dickins , Peter Feiner , "Dr. David Alan Gilbert" , Johannes Weiner , "Huangpeng (Peter)" Subject: [PATCH 18/23] userfaultfd: buildsystem activation Date: Thu, 14 May 2015 19:31:15 +0200 Message-Id: <1431624680-20153-19-git-send-email-aarcange@redhat.com> In-Reply-To: <1431624680-20153-1-git-send-email-aarcange@redhat.com> References: <1431624680-20153-1-git-send-email-aarcange@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This allows to select the userfaultfd during configuration to build it. Signed-off-by: Andrea Arcangeli --- fs/Makefile | 1 + init/Kconfig | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/fs/Makefile b/fs/Makefile index cb92fd4..53e59b2 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 88ad043..e1c9d9e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1644,6 +1644,17 @@ 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