[Xen-devel] [PATCH 00 of 18] Memory sharing overhaul

[Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>]

This patch series proposes an overhaul of the memory sharing code.

Aside from bug fixes and cleanups, the main features are:
- Polling of stats via libxc, libxl and console
- Removal of global sharing hashtable and global sharing lock 
 (if audit disabled)
- Turned sharing audits into a domctl
- New domctl to populate vacant physmap entries with shared 
 pages.

As a result, the domctl interface to sharing changes. The only in-tree
consumer of this interface is updated in the current series. It is 
important that if any out-of-tree consumer exists, that they state
their opinion on this interface change.

Patches 5 to 8, 10, 11, 15 and 18 are tools patches.

Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
Signed-off-by: Adin Scannell <adin@xxxxxxxxxxx>

 xen/arch/x86/mm.c                     |    6 +-
 xen/arch/x86/mm/mem_sharing.c         |   91 +++--
 xen/arch/x86/mm.c                     |    2 +-
 xen/arch/x86/mm/mem_sharing.c         |  526 +++++++++++++++++----------------
 xen/include/asm-x86/mem_sharing.h     |   15 +-
 xen/include/asm-x86/mm.h              |   11 +-
 xen/include/public/domctl.h           |    3 +
 xen/arch/x86/mm/mem_sharing.c         |   65 +++-
 xen/include/public/domctl.h           |    9 +
 tools/libxc/xc_memshr.c               |    3 +-
 tools/libxc/xenctrl.h                 |    1 +
 tools/libxc/xc_memshr.c               |   19 +-
 tools/libxc/xenctrl.h                 |    7 +-
 tools/blktap2/drivers/Makefile        |    2 +-
 tools/blktap2/drivers/tapdisk-image.c |    2 +-
 tools/blktap2/drivers/tapdisk-vbd.c   |    6 +-
 tools/blktap2/drivers/tapdisk.h       |    6 +-
 tools/memshr/bidir-daemon.c           |    4 +
 tools/memshr/bidir-hash.h             |   13 +-
 tools/memshr/interface.c              |   31 +-
 tools/memshr/memshr.h                 |   11 +-
 tools/libxl/xl.h                      |    1 +
 tools/libxl/xl_cmdimpl.c              |   85 +++++
 tools/libxl/xl_cmdtable.c             |    6 +
 xen/arch/x86/mm.c                     |    6 -
 xen/arch/x86/mm/mem_sharing.c         |   31 +-
 xen/arch/x86/x86_64/compat/mm.c       |    6 +
 xen/arch/x86/x86_64/mm.c              |    7 +
 xen/include/asm-x86/mem_sharing.h     |    1 +
 xen/include/public/memory.h           |    1 +
 tools/libxc/xc_private.c              |   10 +
 tools/libxc/xenctrl.h                 |    4 +
 tools/libxl/Makefile                  |    2 +-
 tools/libxl/xl_cmdimpl.c              |   13 +-
 xen/arch/x86/mm.c                     |    4 +-
 xen/include/asm-x86/mm.h              |    3 +
 xen/arch/x86/mm.c                     |   16 +-
 xen/arch/x86/mm/mem_sharing.c         |  169 +++++++++-
 xen/arch/x86/mm/mm-locks.h            |    6 +-
 xen/include/asm-x86/mm.h              |    2 +-
 xen/arch/x86/mm/mem_sharing.c         |  106 ++++++
 xen/include/public/domctl.h           |    3 +-
 tools/libxc/xc_memshr.c               |   23 +
 tools/libxc/xenctrl.h                 |    6 +
 xen/arch/ia64/xen/mm.c                |    6 +
 xen/arch/x86/mm/mem_sharing.c         |    8 +
 xen/common/keyhandler.c               |    7 +-
 xen/include/xen/mm.h                  |    3 +
 xen/arch/x86/mm/mem_sharing.c         |   17 +-
 xen/include/public/domctl.h           |    1 +
 tools/libxc/xc_memshr.c               |   14 +
 tools/libxc/xenctrl.h                 |    2 +
 52 files changed, 1005 insertions(+), 397 deletions(-)

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