mm/process_vm_access: move config option into init/Kconfig (226b4ccd) · Commits · 戴 / test

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>

init/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -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

mm/Kconfig

+0 −10

Original line number	Diff line number	Diff line
		@@ -436,16 +436,6 @@ 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
		#

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