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Commits on Jan 2, 2013

  1. exec: make -mem-path filenames deterministic 

    This patch makes the -mem-path filenames deterministic and allows some control
over how QEMU mmaps the files. Given this control, QEMU can be used to implement
exogenous memory management techniques quite simply. Two examples follow:

    1. Post-copy migration (mmap=shared for origin, save device state, path in
       NFS available on both hosts, mmap=shared for destination).
    2. memory sharing via VM cloning (mmap=shared for master, save device state,
       then mmap=private for clones).

These new features are exposed via arguments to -mem-path:

-mem-path \
    path[,mode=temp|open|create][,mmap=private|shared][,nofallback][,anyfs]

The backing file names are made deterministic by including their RAMBlocks'
offsets, which are unique given a qemu command line. Note that Xen's live
migration relies on RAMBlocks having the same offsets between QEMU processes
(see xen_read_physmap). The new file name format is

    qemu_back_mem.OFFSET+SIZE.NAME[.RANDOM]

where SIZE and NAME are added for extra sanity checking when mode="open".

By default, the old -mem-path behavior is preserved. I.e., mode="temp" is used,
which adds a random suffix to the deterministic name and unlinks the files.
    Peter Feiner committed Jan 2, 2013
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Commits on Dec 19, 2012

  1. Merge remote-tracking branch 'bonzini/header-dirs' into staging 

    * bonzini/header-dirs: (45 commits)
  janitor: move remaining public headers to include/
  hw: move executable format header files to hw/
  fpu: move public header file to include/fpu
  softmmu: move remaining include files to include/ subdirectories
  softmmu: move include files to include/sysemu/
  misc: move include files to include/qemu/
  qom: move include files to include/qom/
  migration: move include files to include/migration/
  monitor: move include files to include/monitor/
  exec: move include files to include/exec/
  block: move include files to include/block/
  qapi: move include files to include/qobject/
  janitor: add guards to headers
  qapi: make struct Visitor opaque
  qapi: remove qapi/qapi-types-core.h
  qapi: move inclusions of qemu-common.h from headers to .c files
  ui: move files to ui/ and include/ui/
  qemu-ga: move qemu-ga files to qga/
  net: reorganize headers
  net: move net.c to net/
  ...

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    Anthony Liguori committed Dec 19, 2012
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  2. janitor: move remaining public headers to include/ 

    Headers in the root directory are now used only from within that
directory.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  3. hw: move executable format header files to hw/ 

    Or delete a.out.h which is unused.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  4. fpu: move public header file to include/fpu 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  5. softmmu: move remaining include files to include/ subdirectories 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  6. softmmu: move include files to include/sysemu/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  7. misc: move include files to include/qemu/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  8. qom: move include files to include/qom/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  9. migration: move include files to include/migration/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  10. monitor: move include files to include/monitor/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  11. exec: move include files to include/exec/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  12. block: move include files to include/block/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  13. qapi: move include files to include/qobject/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  14. janitor: add guards to headers 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  15. qapi: make struct Visitor opaque 

    Move its definition from qapi-visit-core.h to qapi-visit-impl.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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    bonzini committed Dec 19, 2012
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  16. qapi: remove qapi/qapi-types-core.h 

    The file is only including error.h and qerror.h.  Prefer explicit
inclusion of whatever files are needed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  17. qapi: move inclusions of qemu-common.h from headers to .c files 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  18. ui: move files to ui/ and include/ui/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  19. qemu-ga: move qemu-ga files to qga/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  20. net: reorganize headers 

    Move public headers to include/net, and leave private headers in net/.
Put the virtio headers in include/net/tap.h, removing the multiple copies
that existed.  Leave include/net/tap.h as the interface for NICs, and
net/tap_int.h as the interface for OS-specific parts of the tap backend.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  21. net: move net.c to net/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  22. net: do not include net.h everywhere 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  23. net: move Bluetooth stuff out of net.h 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  24. janitor: do not include qemu-char everywhere 

    Touching char/char.h basically causes the whole of QEMU to
be rebuilt.  Avoid this, it is usually unnecessary.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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    bonzini committed Dec 19, 2012
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  25. janitor: do not rely on indirect inclusions of or from qemu-char.h 

    Various header files rely on qemu-char.h including qemu-config.h or
main-loop.h, but they really do not need qemu-char.h at all (particularly
interesting is the case of the block layer!).  Clean this up, and also
add missing inclusions of qemu-char.h itself.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  26. build: kill libuser 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  27. build: kill libdis, move disassemblers to disas/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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    bonzini committed Dec 19, 2012
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  28. build: create ldscripts/ 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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    bonzini committed Dec 19, 2012
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  29. build: move rules from Makefile to */Makefile.objs 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  30. build: add $(TARGET_DIR) to "GEN config-target.h" lines 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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    bonzini committed Dec 19, 2012
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  31. build: adjust setting of QEMU_INCLUDES 

    Make it correct for nested directories, and move the static part
from Makefile to configure.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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  32. vscclient: use per-target variables 

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    @bonzini
    bonzini committed Dec 19, 2012
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Commits on Dec 18, 2012

  1. Merge remote-tracking branch 'stefanha/trivial-patches' into staging 

    * stefanha/trivial-patches:
  configure: Earlier pkg-config probe
  vmmouse_reset(): remove minimal code duplication
  linux-user/syscall.c: remove wrong forward decl of setgroups()
  fix build error on ARM due to wrong glibc check
  gitignore: Add virtfs-proxy-helper
  arm_gic: Add cpu nr to Raised IRQ message
  zynq_slcr: Compile time warning fixes.
  pflash_cfi0x: Send debug messages to stderr
  pflash_cfi01: qemu_log_mask "unimplemented" msg
  net, hub: fix the indent in the comments

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    Anthony Liguori committed Dec 18, 2012
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  2. Merge remote-tracking branch 'amit/master' into staging 

    * amit/master:
  virtio-serial-bus: assert port is non-null in remove_port()
  virtio-serial-bus: send_control_msg() should not deal with cpkts
  virtio-serial: delete timer if active during exit
  virtio-serial: allocate post_load only at load-time
  virtio-serial: move active ports loading to separate function
  virtio-serial: use uint32_t to count ports

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
    Anthony Liguori committed Dec 18, 2012
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