2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
linux-next/arch/blackfin
Laurent Dufour 2ae416b142 mm: new mm hook framework
CRIU is recreating the process memory layout by remapping the checkpointee
memory area on top of the current process (criu).  This includes remapping
the vDSO to the place it has at checkpoint time.

However some architectures like powerpc are keeping a reference to the
vDSO base address to build the signal return stack frame by calling the
vDSO sigreturn service.  So once the vDSO has been moved, this reference
is no more valid and the signal frame built later are not usable.

This patch serie is introducing a new mm hook framework, and a new
arch_remap hook which is called when mremap is done and the mm lock still
hold.  The next patch is adding the vDSO remap and unmap tracking to the
powerpc architecture.

This patch (of 3):

This patch introduces a new set of header file to manage mm hooks:
- per architecture empty header file (arch/x/include/asm/mm-arch-hooks.h)
- a generic header (include/linux/mm-arch-hooks.h)

The architecture which need to overwrite a hook as to redefine it in its
header file, while architecture which doesn't need have nothing to do.

The default hooks are defined in the generic header and are used in the
case the architecture is not defining it.

In a next step, mm hooks defined in include/asm-generic/mm_hooks.h should
be moved here.

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-06-24 17:49:41 -07:00
..
boot blackfin: Ignore generated uImages 2013-09-13 10:42:39 +08:00
configs bf609: enable soft switch gpio driver by default 2015-04-23 21:34:29 +08:00
include mm: new mm hook framework 2015-06-24 17:49:41 -07:00
kernel blackfin updates for Linux 4.1 2015-04-24 07:58:07 -07:00
lib blackfin: license: Change ADI BSD license 2012-05-21 14:54:30 +08:00
mach-bf518 blackfin: cleanup board files 2014-04-12 08:48:01 +08:00
mach-bf527 debug-mmrs: Eliminate all traces of the USB_PHY_TEST MMR 2015-04-23 21:34:31 +08:00
mach-bf533 arch/blackfin/mach-bf533/boards/stamp.c: add linux/delay.h 2015-01-08 15:10:52 -08:00
mach-bf537 pata_platform: Remove useless irq_flags field 2014-08-23 13:05:08 -04:00
mach-bf538 blackfin: cleanup board files 2014-04-12 08:48:01 +08:00
mach-bf548 debug-mmrs: Eliminate all traces of the USB_PHY_TEST MMR 2015-04-23 21:34:31 +08:00
mach-bf561 blackfin: fix up obsolete cpu function usage. 2015-03-05 15:25:08 +10:30
mach-bf609 eth: bf609 eth clock: add pclk clock for stmmac driver probe 2015-04-24 11:36:35 +08:00
mach-common blackfin updates for Linux 4.1 2015-04-24 07:58:07 -07:00
mm mm/blackfin: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:35 -07:00
oprofile Blackfin arch: remove hardware PM code, oprofile not use it 2009-01-07 23:14:39 +08:00
Clear_BSD.txt blackfin: license: Change ADI BSD license 2012-05-21 14:54:30 +08:00
Kconfig treewide: Fix typos in Kconfig 2014-09-26 11:12:28 +02:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Makefile blackfin: rename vmImage to uImage after we move to buildroot 2013-05-07 18:26:39 +08:00