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authorChristopher Yeoh <cyeoh@au1.ibm.com>2012-05-30 02:06:27 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-30 03:22:20 +0400
commit5febcbe99d4766cc383909c447e002e63d8b4592 (patch)
treedd2b87e923c982676ed07260ea7841a41098210a /mm/Kconfig
parenteb6332a54542bcd3aedb121ecb247f172b8f3602 (diff)
downloadlinux-5febcbe99d4766cc383909c447e002e63d8b4592.tar.xz
Cross Memory Attach: make it Kconfigurable
Add a Kconfig option to allow people who don't want cross memory attach to not have it included in their build. Signed-off-by: Chris Yeoh <yeohc@au1.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 39220026c797..b2176374b98e 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -349,6 +349,16 @@ choice
benefit.
endchoice
+config CROSS_MEMORY_ATTACH
+ bool "Cross Memory Support"
+ depends on MMU
+ default y
+ help
+ Enabling this option adds the system calls process_vm_readv and
+ process_vm_writev which allow a process with the correct privileges
+ to directly read from or write to to another process's address space.
+ See the man page for more details.
+
#
# UP and nommu archs use km based percpu allocator
#