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| author | Konstantin Khlebnikov <koct9i@gmail.com> | 2014-06-04 16:10:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 16:54:12 -0700 |
| commit | 226b4ccdcb6371645c25ec99b59bfde65987318c (patch) | |
| tree | aa39df4a0dde94260b9ee2c0e61318c038a8738d /init/Kconfig | |
| parent | 1a501907bbea8e6ebb0b16cf6db9e9cbf1d2c813 (diff) | |
| download | lwn-226b4ccdcb6371645c25ec99b59bfde65987318c.tar.gz lwn-226b4ccdcb6371645c25ec99b59bfde65987318c.zip | |
mm/process_vm_access: move config option into init/Kconfig
CONFIG_CROSS_MEMORY_ATTACH adds couple syscalls: process_vm_readv and
process_vm_writev, it's a kind of IPC for copying data between processes.
Currently this option is placed inside "Processor type and features".
This patch moves it into "General setup" (where all other arch-independed
syscalls and ipc features are placed) and changes prompt string to less
cryptic.
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Christopher Yeoh <cyeoh@au1.ibm.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 0a2f09a80e90..ce034ad4a162 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -261,6 +261,16 @@ config POSIX_MQUEUE_SYSCTL depends on SYSCTL default y +config CROSS_MEMORY_ATTACH + bool "Enable process_vm_readv/writev syscalls" + 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. + config FHANDLE bool "open by fhandle syscalls" select EXPORTFS |